JP2002247780A - Power quality management operation support system and power quality management operation support method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a means for calculating the required power quality to a power customer, and to support optimal management and operation of the power receiving / distributing equipment based on the information. SOLUTION: Information including at least one of a system configuration diagram of a power receiving / distributing facility, a receiving voltage, a receiving facility capacity, and a contract power, a plurality of power receiving points and a bus and a feeder circuit connected to each load device. And information including at least one of the type, capacity, operating state, and presence or absence of an abnormal stop of the load device, or damage information at the time of abnormality. Is acquired by the management server 1 and the information is associated using the association information stored in the storage unit 17, and the information and the associated information are stored in the database 2.
And the power quality required by the power consumer using the information stored in the database.
6 and present it to the power consumer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving and distribution facility for a power consumer who receives power from a plurality of power supply systems through a power receiving point and distributes the power to a plurality of load devices through a bus having a switch group and a feeder circuit. The present invention relates to a power quality management operation support system and a power quality management operation support method.

[0002]

2. Description of the Related Art In recent years, in an environment surrounding power consumers, with the deregulation of power regulations, in addition to stable supply of required power quality, further cost reduction and self-management of equipment have become necessary. . For example, JP-A-11-3087
No. 71 discloses that, in relation to power supply control, load control that has been performed individually for power consumers is performed by cooperative control of the entire power consumer, and when there are a plurality of power suppliers that supply power. Describes a power supply control device that selects an optimal power selling business operator. Further, for example, Japanese Patent Application Laid-Open
Japanese Patent No. 186,932 discloses power supply and demand in a steel mill with the aim of accurately predicting the power pattern at the time of shutdown and operation of each factory and performing stable power supply and economical power purchase. A power consumption estimating apparatus is described in which power supply and power supply from a private power generation facility are determined on the basis of a predicted value of self-generated power, the amount of power purchase is determined, and the information is notified to a power company.

[0003]

However, in the above-described conventional power supply control device, although there is a description of a power quality index between a power seller and a power customer, the power quality required by the power customer is calculated. The means to do so is not clear. In addition, the description of the amount of electricity required by the customer, that is,
Although there is a description of accurately predicting the power pattern of each customer and conducting stable power supply and economical power purchase, regarding power quality, the power quality required by the customer is calculated. It does not mention the means of purchasing, that is, managing or servicing power quality.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and provides a means for calculating the required power quality to a power consumer, and based on the calculated power quality, provides a means for calculating the required power quality. The purpose is to support optimal management and operation of customer power distribution equipment.

[0005]

A first power quality management operation support system of the present invention receives power from a plurality of power sources through a power receiving point and distributes power to a plurality of load devices through a bus having a switch group and a feeder circuit. Power quality management operation support system for power consumer power distribution equipment
A system configuration diagram of the power consumer power receiving and distribution equipment, equipment information including at least one of a receiving voltage, a receiving equipment capacity, and a contract power, and a plurality of power receiving points and a bus and a feeder circuit connected to each of the load devices Power information including at least one of the current and the voltage of the load device, load information including at least one of the type, capacity, operating state, and presence / absence of an abnormal stop of the load device. The management server obtains the damage information, associates the above information using the association information stored in the storage unit, stores the information and the associated information in a database, and stores the information in the database. Using the information thus obtained, the power quality required by the power consumer is calculated by the calculating means of the management server, and the calculated power quality is increased. It is intended to be presented to the power consumers.

Further, in the second power quality management operation support system according to the present invention, the calculation means may associate each piece of information with each other.
The above-mentioned plurality of load devices are divided into a plurality of groups, and the above-mentioned information and the associated information are stored in a database for each group, and the power consumer is required using the information stored in the database. Is calculated for each group.

Further, in the third power quality management operation supporting system according to the present invention, the arithmetic means includes a plurality of the plurality of the plurality of the power management units, based on a condition or a conditional expression predetermined by a power consumer or input from an input terminal. The load devices are grouped.

A fourth power quality management operation support system according to the present invention is based on information stored in the database, and is a power facility for securing power quality required by a power customer or a configuration thereof. Power equipment, system configuration,
Alternatively, information on the operation plan is provided to the electric power consumer.

Further, the fifth power quality management operation support system of the present invention is accompanied by the introduction of power equipment for ensuring the power quality required by the power consumer, power equipment constituting the power equipment, and system configuration. The cost and effect are calculated, and the information is provided to the electric power consumer.

[0010] A sixth power quality management operation support system of the present invention controls power equipment in a power receiving / distributing facility based on information stored in the database.

In a seventh aspect of the present invention, the management server exchanges information with a terminal of an electric appliance manufacturer or a terminal of a power generation company via a network.

A first power quality management operation supporting method according to the present invention is a power consumer receiving and distributing method that receives power from a plurality of power sources through a power receiving point and distributes the power to a plurality of load devices through a bus having a switch group and a feeder circuit. A power quality management operation support method for a facility, wherein facility information including at least one of a system configuration diagram, a receiving voltage, a receiving facility capacity, and a contract power of the power consumer power receiving and distribution facility is input. Inputting power quality information including at least one of a current and a voltage in a bus and a feeder circuit connected to the plurality of power receiving points and the load devices; and a type, a capacity, and an operating state of the load devices Inputting load information including at least one of the presence or absence of an abnormal stop, and damage information at the time of abnormal, and a function stored in the storage means. Performing the association of each of the input information using the attached information, storing the input information and the associated information in a database, and using the information stored in the database, the power consumer needs And a step of presenting the calculated power quality to the power consumer.

According to a second power quality management and operation support method of the present invention, power receiving and distribution equipment and its operation are obtained from a power consumer via a network, and information on the power quality required by the power consumer is obtained. Obtaining information on electric power from a power selling company via a network, obtaining information on electric equipment from an electric equipment maker via a network, and using the obtained information to obtain the electric power customer. And generating information about electric power and electric equipment suitable for the required electric power quality and providing the information to the electric power consumer.

In a third power quality management operation support method according to the present invention, the power quality is calculated in the first power quality management operation support system according to the present invention.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a diagram illustrating an overall configuration of a power quality management operation support system according to a first embodiment of the present invention. In the figure, reference numeral 1 denotes a server computer (computer) as a management server for power quality management operation support connected to the network 4, and is arranged in, for example, an office of a power consumer. Reference numeral 3 denotes a local computer (computer) as a local terminal on the side of the power consumer power receiving and distribution facility connected to the network 4. Note that the form of the network 4 may be a public line such as the Internet, a dedicated line (both are not wired or wireless), or a mixture of these.

FIG. 2 is a block diagram showing a power receiving / distributing facility for a power customer. In the figure, reference numeral 5 denotes a high-voltage or extra-high power customer receiving / distributing facility such as a building or a factory, which is shown in an electric system diagram. The power consumer power receiving and distribution equipment 5 receives power supply via the power receiving point 101. Generally, such a power consumer receives a power receiving point 10 from a plurality of power supply systems 102 and 103.
1, and is distributed to a plurality of load devices (loads 1 to 5) 541 to 545 through a bus 550 including switches 511 to 517 and feeder circuits 551 to 555. In FIG. A state in which power is being received from 102 is shown. Numerals 301 to 307 (hereinafter, may be represented by 3) correspond to the local terminals 3 on the power receiving and distribution equipment side in FIG. 511 is a power receiving switch,
512 is a main switch and 513 to 517 are feeder circuits 5.
Switches provided in 51 to 555, 501 is a circuit breaker, 5
02: PCT (Transformer for power supply and demand meter: Potential Cu
rrent Transformers), 521, 522 are PT (Potential Transformers), 531, 532
533 to 537 are CT (Current Transformer)
s) and 503 are transformers.

FIG. 3 is a block diagram showing the configuration of the local terminal. In the figure, reference numeral 31 denotes a measuring instrument for measuring the power quality such as the above-mentioned voltage and current.
And CT531, 532, 533-537. Reference numeral 32 denotes an input terminal such as a keyboard.
The presence / absence of stop of the load devices 541 to 545 at the time of abnormality, damage information at the time of abnormality, and the like are input. An input / output control unit 33 controls data input from the power quality measurement device 31 or the input terminal 32 and controls data output to the network 4.

FIG. 4 is a block diagram showing the configuration of the management server shown in FIG. In the figure, 11 is an input terminal such as a keyboard, 12 is a display terminal such as a display, and 13 is an output terminal such as a printer. 14, 15, 21 are input / output control means. The input / output control unit 14 controls data output from the arithmetic unit 16 to the display terminal 12 and the output terminal 13 and data input from the input terminal 11 to the arithmetic unit 16. The input / output control unit 15 controls data output from the arithmetic unit 16 to each of the local terminals 301 to 307 via each network 4 and data input from each of the local terminals 301 to 307 to the arithmetic unit 16. The input / output control unit 21 controls data output from the arithmetic unit 16 to the information storage units 201 to 203 and data input from the information storage units 201 to 203 to the arithmetic unit 16. Reference numeral 16 denotes an arithmetic unit, which will be described later in detail, and selects and executes necessary information and necessary programs from the database 2 and the main program group 17 according to the purpose, and controls each unit. Reference numeral 17 denotes storage means for storing a main program group such as association information, and is hereinafter referred to as a main program group. Reference numeral 2 denotes a database as storage means for storing and storing various types of information. Each of the information storage means 201 to 203 stores, for example, equipment information, load information, damage information at the time of abnormality, and the like.

The system configuration diagram of the power receiving / distributing facility, the receiving voltage, the receiving facility capacity, the facility information such as the contract power, etc.
For example, the information is input from the input terminal 11 of the management server 1 and is stored in the information storage unit 201 of the database 2 by the input / output control units 14 and 21 and the arithmetic unit 16.

The power receiving / distribution facility has a power receiving point 10
PCT502, PT521, 522, CT531,
A device (measuring device 31) for measuring power quality such as current or voltage such as 532 is installed, and power quality information from the device for measuring power quality is transmitted to the local terminals 301 and 30.
2 to the management server 1 via the network 4. Here, when there are a plurality of power receiving points 101, it is assumed that a device for measuring power quality and a local terminal are installed at each power receiving point 101. Furthermore, each load 541-
A bus 550 and a feeder circuit 551 to 545
555 also measures the power quality (CT533-53
7) is installed, and the power quality information from the device for measuring the power quality is transmitted by the local terminals 303 to 307.
The data is sent to the management server 1 via the network 4.

Each of the local terminals 301 to 307 obtains power quality information such as voltage and power from the measuring instrument 31 to the input / output control means 33 as shown in FIG. Transfer to 1. Further, each of the local terminals 301 to 307 can input information such as the type and capacity of the load, the operating state, the presence or absence of a load stop at the time of abnormality, and the loss at the time of abnormality. This input operation is performed by the input terminal 3
2, the measurement may be performed by a person, or a measuring instrument 31 such as a sensor may be installed on the load, and the operating / stop state of the load may be automatically transmitted. Local terminals 301 to 30
7 sends the load information and the damage information at the time of abnormality together with the power quality information such as voltage and current to the network 4,
The management server 1 which transfers the information to the management server 1 via the network 4 has a function of associating these pieces of information and forming a database, as described later in detail.

The power consumer converts the necessary information into the database 2 as information associated with the information based on items predetermined by the power consumer or items input by the power consumer from the management server input terminal 11. More can be pulled out.

FIG. 5 shows a presentation example of the associated information. This is a case where the power consumer selects items such as the instantaneous voltage drop time and frequency, the instantaneous voltage drop time and voltage drop degree, and the temporal change in the high frequency content as necessary information, as shown in FIG. FIG. 3 is a graph of power quality (instantaneous voltage drop, high frequency content) for each power supply such as each of the commercial systems A102 and B103 and each private power generation facility 104. For example, with respect to the instantaneous voltage drop time, a diagram showing the frequency of occurrence for each drop time is compared for each power supply. Although the instantaneous voltage drop time is shown here, it is possible to compare the respective qualities, for example, the voltage drop degree and the harmonic content. If requested by the power consumer, for example, a loss due to one instantaneous voltage drop can be calculated by associating the information with the load information. Further, it is possible to know a specific situation such as the number of load devices that have been able to continue the operation after the return of the voltage drop.

Further, by adding time information to the power quality information measured between the respective measuring devices and sending the time information to the management server 1, comparison and evaluation on the real time axis can be facilitated. . At this time, it is preferable that the management server 1 has a means for checking the simultaneity between the measurement devices and between the local terminals 3 at regular intervals. Furthermore, by measuring in real time, it is possible to know instantaneous and instantaneous quality details.

In FIG. 6, reference numeral 104 denotes a private power generator, 500 denotes a transformer, 510 denotes a switch, and 520 denotes P.
T and 530 are CTs and 540 are devices (loads), and the local terminal 3 is omitted.

Incidentally, the network here may be an optical cable, or may be any one of a wireless cable and a wired cable. However, if transmission delay is a problem,
It is more preferable to use an optical cable. Here, in the premises equipment such as buildings and factories that are targeted, large-scale equipment is within several hundred meters square, and assuming that the distance is transmitted at the speed of light, the time delay due to transmission is negligibly small. Conceivable.

FIG. 7 is a view for explaining an example of the contents held by the database 2 in FIG. The computing means 16 in the management server 1 described with reference to FIGS.
Information input using the input / output control means 14,
Information obtained from the local terminal 3 via the network 4 and the input / output control means 15 is transferred to the main program group 1
7 are associated with each other as shown in FIG. 7, and for example, the operating state of a certain type of load when a certain momentary voltage drop occurs, for example, a certain voltage fluctuation And the operating state of a certain type of load that has occurred. The classified information is classified and stored in the database 2 through the input / output control unit 21. For example, the facility information storage unit 201, the load information storage unit 202, the damage information storage unit 20 at the time of abnormality,
3. Power quality information storage means 204, cost information storage means 205, operation information storage means 206, and the like.

The equipment information stored in the equipment information storage means 201 includes, for example, equipment specifications, equipment drawings, equipment history, received voltage, received capacity, contracted power, system configuration, and the like. The information is input by the facility manager from the input terminal 11 of the server 1 and stored in the facility information storage means 201 by the input / output control means 14 and 21 and the arithmetic means 16.

The load information stored in the load information storage means 202 includes, for example, the type of load (power load,
There are information such as lighting load, capacity (how many watts, etc.), operation status (temporal information such as how long it has been running, and so on). The information is input from the terminal 32 and stored in the load information storage means 202 by the input / output control means 15 and 21 and the arithmetic means 16 via the network 4.

The abnormal damage information stored in the abnormal damage information storage means 203 includes, for example, the type and number of stopped devices, the time required for recovery, and the like. By associating with the power quality information to be described, it becomes possible to grasp what kind of power quality the respective loads are affected when the power quality is obtained. This information, as described above, for example,
The information is input from the input terminal 32 of the local terminal 3 and stored in the damage information storage means 203 at the time of abnormality by the input / output control means 15 and 21 and the arithmetic means 16 via the network 4.

The power quality information stored in the power quality information storage means 204 includes, for example, information relating to instantaneous voltage drop, voltage fluctuation, and harmonics. As described above, for example, the measuring device 31 of the local terminal 3 And the input / output control means 1
5 and 21 and the arithmetic means 16 are stored in the power quality information storage means 204. Specifically, for example, the instantaneous voltage drop is summarized in a graph showing time on the horizontal axis and the degree of voltage drop on the vertical axis, and the voltage fluctuation is shown in a graph showing time on the horizontal axis and voltage fluctuation on the vertical axis. Summarization and harmonics are information that summarizes time on the horizontal axis and harmonic content of the order on the vertical axis, and associates the power quality information for each time with the information that the load stopped. It is. This makes it possible to associate information such as when the load stops and what kind of power quality is required for what kind of load.

The cost information stored in the cost information storage means 205 includes, for example, a power rate, an operation cost, and an installation cost. Specifically, for example, the operation status of the current facility, that is, how much the power rate is , Or how much the operation cost (e.g., equipment maintenance cost) is, for example, the equipment manager inputs to the management server 1 using the input terminal 11. On the other hand, the power quality information, that is,
At present, how much quality electric power is obtained, and at that time, for example, what is the probability of an instantaneous voltage drop,
As a result, for example, the amount of damage that has been paid per year can be known because it has been sent as information to the management server 1 via the network 4 or the like. On the other hand, for example, introduction of a certain facility incurs costs such as installation costs and operation costs, but in that case, how much quality power is guaranteed, for example,
To determine how much the probability of an instantaneous voltage drop is lower than the current equipment, and how much the amount of damage at that time can be suppressed, the equipment manager can grasp and investigate the actual results of equipment introduction so far. If it is, input to the management server 1 using the input terminal 11 or connect to a quality management service (to be described in detail in a later embodiment) via a network, and use it to access device / system information. And information on the power sales company and acquire them into the management server 1 to calculate costs and effects, and to determine what kind of equipment introduction and operation is advantageous to the customer from the viewpoint of cost effectiveness. It can be presented to the customer. The customer judges from these information and selects necessary equipment, an operation plan, and the like.

The operation information stored in the operation information storage unit 206 includes, for example, an operation plan, an operation result, a control method, and an operation example (a distributed power supply system high-speed protection system). The equipment manager can determine the method and operation example by using the input terminal 11 of the management server 1.
, Or may be sent from the local terminal 3 to the management server 1 via the network 4. The operation results and the like are stored in the measuring device 31 connected to the local terminal 3.
May be sent from the local terminal 3 to the management server 1 via the network 4 together with the temporal supplementary information based on the information from the management server 1. The management server 1 classifies these pieces of information together with temporal supplementary information and the like. Specifically, for example, in a facility where a distributed power source is introduced, when an instantaneous voltage drop occurs on the commercial power source side, the commercial power source side and the distributed power source side are disconnected by the high-speed protection system and connected to the distributed power source. In addition, the distributed power supply continuously supplies power to important loads, and information such as the continued operation without stopping the equipment which had been stopped without such a system is transmitted to the network 4.
Is sent from the local terminal 3 to the management server 1 via the management server 1, and the management server 1 grasps the information.

These pieces of information are associated with each other, and the information required by the power consumer as a user uses a program for creating an information output stored in the main program group 17 in the management server 1. And the management server 1
Is displayed on the display terminal 12. The data is output to the output terminal 13 as needed. The database 2 may be located inside the management server 1 or outside the management server 1 as necessary.

FIG. 8 is a block diagram schematically showing the operation of the calculating means of the management server. In the figure, reference numeral 164 denotes a central processing unit, which is included in the calculating means 16. The central processing unit 164 fetches, via the input / output control unit 14, data input from the input terminal 11, for example, a conditional expression for extracting information required by the power consumer. Next, an optimum program is extracted from the main program group 17 based on the fetched data (for example, conditional expressions). Further, necessary information is extracted from the database 2 via the input / output control means 21. Next, the extracted program reflects the data (for example, conditional expressions) and the information extracted from the database 2 in the objective function, respectively (for example, the customer can minimize the damage when the power quality is reduced). The optimization problem creation unit 162 to create an optimization problem, and the optimization problem solution unit 163 to create the optimization problem. Solve. For example, if the power quality is defined as a variable and the condition to minimize the damage cost in the event of an abnormality is given, some power quality that minimizes the damage cost in the event of an abnormality is solved as an optimization problem. . At this time, according to a request input through the input terminal 11, information such as damage information at the time of anomaly and equipment information are taken in, and what quality is required in the equipment,
In order to satisfy this, what kind of operation method is available is output to the output terminal 13 or output to the display terminal 12, and the result is notified to the power consumer. The central processing unit 164 stores the result of solving the optimization problem in the storage device 161 as necessary, and when a request to store the result in the database 2 is input from the input terminal 11, the database 2 Save the result above.

FIG. 9 is a diagram showing a flowchart for solving the optimization problem, and FIG. 10 is a diagram showing a flowchart for explaining some of the steps in FIG. 9 in more detail. Various information obtained through the network,
Each is made into a database (step 802). For example, it is facility information, load information, damage information at the time of abnormality, power quality, cost information, and the like. These pieces of information are supplied to the display terminal 12 and the output terminal 1 as required.
3 (step 803). At this time, when the input terminal 11 requests the correlation of each information, the information is presented according to the request. After the presentation of the information as described above (step 803), if there is a request from the power consumer to obtain information for satisfying the required power quality, a menu for the information is presented and selected (step 804). . Specifically, for example, as shown in FIG. 10, when the power consumer inputs an item that becomes a condition (step 811), a condition expression is created by the condition setting control unit (step 812), and a combination list of the condition expression is created. Is displayed (step 813).

For example, as a combination list of conditional expressions: 1) Equipment group A & power quality B & min. (Equipment introduction cost) 2 sets) Power quality A & min. (Equipment operating cost) & m
in. (Damage amount in case of abnormality) 3 formulas) Power quality C & operation method A & min. (Total cost). The equipment group, which will be described in detail in Embodiment 2, is a group in which a plurality of load devices are divided into a plurality of groups. At this time, for example, power quality (A, B, C, D, ...) equipment group (A, B, C, A + B, A + B + C, ...) operation method (A, B, C, ...) min. (Equipment operation cost, damage amount in case of anomaly, total cost, ...) and their combinations.

The power consumer determines a necessary conditional expression from the combination by a decision prompt displayed on the management server 1, and the management server 1 calculates and presents an optimal control, an operation plan, and the like. (Step 8
05). Specifically, as shown in FIG. 10, first, the power consumer determines the necessary conditional expression (step 81).
4), the management server 1 solves the optimization problem in the optimization problem solving unit 163 based on the determined conditional expression, and performs optimal control.
The operation plan is calculated (Step 103) and presented (Step 815). When solving the optimization problem, necessary information is extracted from the database 2.

The power consumer determines from the decision prompt displayed on the management server 1 whether the result obtained in this way satisfies the demand of the power consumer (step 806). Returns to step 804 to review the conditional expression and solve the optimization problem again.

For example, FIG. 11 and FIG. 12 are diagrams for explaining presentation information about a facility plan proposed to a power customer in the power quality management operation support system according to the present embodiment, and FIG. Schedules 1, 2, 3 ...
FIG. 12 shows the power qualities A, B,
C ... are shown. The management server 1 drafts an equipment plan according to a conditional expression or the like determined in advance by a power consumer. Here, it is assumed that the power qualities A, B, and C are the high-frequency content rate, the voltage drop degree, and the voltage drop duration, respectively, the investment amount for each plan, and the expected number of stopped devices when the plan is adopted. , And the estimated damage amount. The power consumer can select an optimal equipment plan based on the information.

A provider of such a power quality management operation support system will consult with a power customer based on the information shown in FIGS. In addition to equipment planning, optimal operation services (for example, in a certain customer facility, when there is no operation of a load that requires high power quality at night, for example, power quality is low but power purchase cost is low. Service that can be operated by supplying electricity from a cheap power selling company)
And can contribute to the system integration of power consumers. As a method of calculating the optimal operation service, for example, a linear programming method or a target programming method,
Various techniques can be used. `` Linear programming ''
Optimizes an evaluation value on one target scale, such as a maximum profit and a minimum cost. "Goal programming"
Handles multiple scales, considers many goals simultaneously,
It seeks to minimize the difference between the set goals on each scale and the plan achievable under constraints. A planning method that seeks to find a plan that minimizes deviation from each target value by formulating a linear programming method such as direct maximization or minimization of a single target, or considering multiple targets simultaneously. Are used as appropriate to solve the above optimization problem.

Embodiment 2 13 to 17 are diagrams for explaining a power quality management operation support system according to the second embodiment of the present invention. FIG. 13 is a diagram showing the overall configuration of the system, and FIG. 14 is a management server shown in FIG. FIG. 3 is a block diagram showing a configuration of a database. Embodiment 1
In the above, the case where the database 2 is provided in the management server 1 is shown, but in the present embodiment, the database 2 is provided separately from the management server 1.

FIG. 15 is a configuration diagram showing a power consumer power receiving and distribution facility. FIG. 15 shows an example in which power is received from one system 102 as in the case of FIG. In the figure, 51 and 52 are groups.

In the first embodiment, each of the feeder circuits 551 to 551
Although the local terminals 303 to 307 are provided for each of the devices 555 (each of the loads 541 to 545), in the present embodiment, the known information (for example, the classification of the load devices requiring the same power quality has already been performed. Information such as if you have
Or the feeder circuits 551 to 555 (the respective loads 541 to 545) are classified into a plurality of groups 51 and 52 in advance based on the equipment arrangement or the like, and the local terminals 303 and 304 are provided for each of the groups 51 and 52.
Is provided. This classification may be due to restrictions due to the arrangement of equipment or the like, or the power consumer may arbitrarily perform this grouping.

A specific example of grouping will be described below. The management server 1 receives a condition or a conditional expression determined in advance by a power consumer, or inputs a condition or a conditional expression from an input terminal, and based on the condition or the conditional expression, a group of the power consumer receiving and distributing facilities. The data is divided and displayed on the display terminal 12 or output terminal 13.
Or output from. For example, as a condition predetermined by the power consumer, “No damage report (number of stopped devices of load = 0) & max. (Voltage drop time) & m
ax. (The degree of voltage drop), the inside of the electric power customer facility is classified ". The management server 1 selects an optimal program from the main program group 17,
The power consumer power distribution equipment is divided into a plurality of groups so as to meet the above conditions.

FIG. 16 is a diagram showing a display example of the grouping result on the display terminal. According to this, for example, if the voltage drop time is within 200 ms and the degree of voltage drop is within 75%, the group A has no damage (there is no load stopped device), and the group B has the voltage drop time of 100 ms.
If the degree of voltage drop is within 50%, it indicates that there is no damage. In other words, the power consumer knows which load devices belong to which group, and knows that, compared to group A, group B is a group having load devices that require high quality power. it can.

As described above, the power consumer power receiving / distributing facility 5 (each of the load devices 541 to 545 in this embodiment) is divided into a plurality of groups 51 and 52 in advance, and the information is input to the management server 1. . In addition, each group 51,5
2, local terminals 303 and 304 are installed, respectively, and the power quality is measured by measuring instruments 533 to 537 installed in the groups 51 and 52, respectively.
To the database 2 via.

The local terminals 303 and 304 installed for each of the groups 51 and 52 are, as in the case of the first embodiment, the type of load, the operating state, the presence or absence of a load stop in the event of an error, the loss in the event of an error, and the like. And sends the information to the database 2 via the network 4 with the group information (for example, group number) as supplementary information. In the database 2, for example, as shown in FIG.
The information is stored every two. Management server 1 is group 5
Information association is performed for each of the groups 51 and 52, and the association information is stored for each of the groups 51 and 52. FIG. 17 is a diagram illustrating an example of information stored in the power quality information storage unit 204.

When the power consumer needs information for each group, the management server 1 extracts the information required by the power consumer from the database 2 for each group,
provide. Thus, the power consumer can know necessary information for each group.

In this embodiment, each group 51,
52, local terminals 303 and 304 are provided.
Although the number of local terminals may be small, as in the case of the first embodiment shown in FIG.
5 (each of the load devices 303 to 307).

In this embodiment, the case where the database 2 is provided separately from the management server 1 has been described. However, the database 2 may be provided in the management server 1 as in the first embodiment. This is not specifically stated,
The same applies to the following embodiments.

Embodiment 3 FIG. FIGS. 18 and 19 are diagrams for explaining the power quality management operation support system according to the third embodiment of the present invention. Specifically, FIG. 18 is a configuration diagram showing a power receiving / distributing facility, and FIG. FIG. 3 is a block diagram illustrating a configuration of a local terminal. In the figure, 34 is a control terminal, 53 and 54 are groups, and 560 is an active filter. In FIG. 18, the information transmission lines from each measuring device for measuring the power quality to each of the local terminals 301 to 304 are omitted, but are the same as those shown in FIGS. 2 and 15, for example.

In the first and second embodiments, the local terminal 3 only transmits information from the power receiving and distribution equipment to the management server 1 and the database 2, and the management server 1 transmits the information stored in the database 2. Although the power quality required by the power consumer is calculated and presented to the power consumer, in the present embodiment, the management server 1 uses the power consumer power distribution equipment based on the operation plan. Control power equipment. Note that the power equipment referred to in the present embodiment is, for example, a power switching apparatus group, a private generator, a battery group, a UPS,
(Uninterruptible Power Supply) group.

The management server 1, based on the operation plan, switches the power supply switching device 510, UPS,
CVCF (Constant Voltage a)
nd Constant Frequency Power Supply), an active filter 560, and a high-speed switch (for example, a switchgear arranged on a load) for optimal control of power devices. In addition,
Although the UPS and the CVCF are not particularly described in FIG. 18, the UPS has a small capacity for each load device.
A large-capacity device is installed in a plurality of load devices corresponding to the capacity. Also, CVCF generally uses UPS
, And can supply power to a load within a certain range. In addition, in FIG. 18, although the opening / closing command to the switching device arranged on the load is indicated by an arrow,
When the power supply of the load, the output of the load, and the like can be directly controlled, they may be optimally controlled.

The control commands from the management server 1 are transmitted via the network 4 to the local terminals 301, 303, 304.
Sent to In response to this control command, each local terminal 3
The control terminals 34 of 01, 303, and 304 send device control signals to the corresponding power devices. For example, commercial system A1
02, the power quality of the commercial power system B103 is B, and the power quality of the private power generation facility 104 is C. When the power quality A is requested during the night, the power switch 510 (two units) ) To the commercial system A1
02, and when the power quality B is requested during the daytime, a command is sent to the power supply changeover switches 510 (two units),
Switch to commercial system B103. As a result, the electric power consumer can enjoy the electric power of the optimum electric power quality in accordance with the time history of the required electric power quality.

In FIG. 18, it is assumed that the local terminal 301 views the group 53 separated by a broken line, the local terminal 302 views the group 54, the local terminal 303 views the group 51, and the local terminal 304 views the group 52. Power equipment (switch) in each control range
510 is controlled. The local terminals 301 and 30
2, 303 and 304 may control the power device 510 in accordance with an instruction from the management server 1 as described above, or the local terminals 301, 302, 303 and 304 may control the power device 510 independently. Depending on the judgment and control contents, the management server 1 and the local terminals 301 and 3 may be used.
02, 303, and 304.

FIGS. 20 and 21 each show an example of the configuration of the power receiving / distributing equipment and the local terminal in the case where the control is performed in accordance with an instruction from the management server 1 in FIG. 20 and FIG. The configuration is shown in FIG.
Also, the local terminals 301, 302, 303, 304
FIG. 23 and FIG. 24 show one configuration example of the power consumer power receiving and distribution equipment and the local terminal in the case of independently determining and controlling (represented by 3 in FIG. 21).

FIGS. 20 and 21 show that the management server 1 captures all information related to the power in the power receiving / distributing facility, and then controls the switches 511 to 517 optimally via the local terminal 3. This is a configuration example in the case of performing. That is, the communication between the local terminal 3 and the management server 1 is a two-way communication. Also, the local terminal 3
The input / output control unit 33 is provided, and the determination unit 35 is provided. The determination unit 35 does not need to determine whether there is an abnormality or stop of the load, for example, as long as an abnormality or stop signal is input from the load devices 541 to 545. The management server 1 determines whether the load devices 541 to 545 are abnormal or stopped based on the behavior of the
To send the signal. Further, for example, when an abnormality such as a voltage drop occurs and the priority order of the operation continuation of the load devices 541 to 545 monitored by the local terminal 3 is set to be low, the local terminal 3 makes a determination. Or through the input / output control means 33 of the local terminal 3 according to an instruction from the management server 1.
The opening / closing devices 511 to 517 that have received the command to open the electrodes 1 to 517 are in an open state and perform control such as stopping power supply to the load. As a result, optimal operation within the power consumer's power receiving and distribution facility is possible.

FIG. 22 shows a case where the power customer management server 1 makes a judgment based only on information in the power customer power receiving and distribution equipment.
21 is further extended to obtain more optimal information by obtaining information on the power of the power selling company including each power company from the measuring device or the terminal of the power generating company via the network 40. This is an example in the case of performing. In the figure, 61 to 63 are power selling companies,
For example, 61 is a power company, and 62 and 63 are IPPs (power generation companies). Reference numerals 601 to 603 denote respective power sales companies 61
Measuring instrument for measuring the quality of power supplied from
Reference numerals 0a to 510c denote switches for opening and closing the electric power supplied from the power sales companies 61 to 63, respectively.

For example, when the electric power receiving and distribution equipment 5 receives electric power only from the electric power company 61, when the electric power company 61 experiences a decrease in power quality such as an instantaneous voltage drop or a power outage, the electric power customer Based on the information, the management server 1 opens the switch 510a via the network 4, stops the power supply from the power company 61, and supplies the power from the IPP (power generation company) 62 or IPP 63 that can supply sound power. In order to receive the power supply, the switch 51
0b and the switch 510c are closed.

Since the management server 1 has a database of operation status and equipment information in the power customer receiving and distributing facility, the management server 1 selects a power selling company corresponding to the power required by the power consumer, and Power devices in the power customer receiving and distribution facility 5 (power supply switching device, UPS, C
VCFs, active filters, high-speed switches, etc.) can be operated optimally. In addition, the management server manages the importance of the load devices and information on the load circuits protected by the power supply that compensates for the shortage of power, and when the received power voltage temporarily drops due to lightning strikes on the upper system,
Based on the information, the management server quickly disconnects the load that may be stopped, and gives priority to the continuation of the operation of the important load. Thereafter, when the received power recovers, the operation of re-closing the circuit of the stopped load and restarting the operation can be performed.

In FIG. 23 and FIG. 24, communication between the local terminal 3 and the management server 1
Is a one-way communication for transmitting information from the management server 1 to the management server 1 via the network 4. The local terminal 3 includes an input / output control unit 33 and a determination unit 35. The local terminal 3 receives information from the measuring device 31 such as voltage, current, device open / close state and the like, and information from the input terminal 32 such as load type, capacity, operating state, presence / absence of abnormal stop, damage status and the like. , Respectively, via the input / output control means 33. Based on the obtained information, the determination unit 35 controls the power devices including the switches 511 to 517 in FIG. 20 according to the operation plan, and minimizes the damage caused by the abnormality according to the type of abnormality. Switch 511 to keep down
To 517 and other power devices. Switches 511 to 511 in a group managed by each local terminal 3
The control signal 517 is sent to the output terminal 33 via the input / output control means 33. The local terminal 3 transmits necessary information to the network 4 via the input / output control unit 33.
Send to For example, the type, capacity, and operating status of the load
In many cases, it is not necessary to send the information to the management server 1 in each case.
And sends the information at that time to the management server 1.
As described above, the local terminal 3 operates the switches 511-517.
By optimally controlling the power consumption, it is possible to perform the optimal operation of the power consumer power receiving and distribution equipment.

In FIGS. 20 and 23, load devices 541 to 545 are connected to the premises bus 550.
Although the feeder switches 513 to 517 are controlled by the local terminals 303 to 307, the feeder switches 513 to 517 are grouped 51 and 52 as shown in FIG. 51, 52
Can be applied to a configuration in which each is controlled by each of the local terminals 303 and 304. Also, the load devices 541 to 5
Not only 45, but also power storage equipment such as a fuel cell, phase adjustment equipment such as a phase-advancing capacitor, and equipment such as UPS and CVCF may be connected.

Embodiment 4 FIG. 25 is a diagram showing an overall configuration of a power quality management operation support system according to Embodiment 4 of the present invention. In the figure, reference numerals 351 and 352 denote maker computers as terminals of the electric equipment maker, and 361 and 36, respectively.
Reference numeral 2 denotes a power selling company side computer as a power selling company side terminal.
The management server 1 is connected via the network 40 to terminals 351 and 352 on the side of the electric appliance manufacturer and terminals 361 and 362 on the side of the electric power sales company (an electric power company, a power generation company, power generation facilities, etc.). In such a configuration,
By exchanging information with an electric equipment maker or a power sales company, an electric power consumer can calculate an optimal equipment design and an operation plan. In addition, it is possible to make a contract with each electrical equipment maker or power sales company through the network 40.

FIG. 26 is a conceptual diagram showing an example of information exchange. In FIG. 26, reference numeral 10 denotes information related to the power receiving / distributing facilities and operation of the electric power consumer, and 50 denotes an electric equipment maker 351 (3
52) Information on devices and systems, 60 is information on the power sales company 361 (362), 70 is a quality management service, and 701 is a terminal of a quality management service company as an intermediary. The quality management service company that provides the quality management service 70 is, for example, the power sales company side terminal 361 (or 36).
2), electrical equipment manufacturer side terminal 351 (or 352),
It is connected to the management server 1 of the power consumer via a network (not shown in FIG. 26), and stores the power sales company information 60, the equipment / system information 50, the power customer receiving / distributing equipment / operation information 10, and the like. Obtain. As other information, a contract may be made with a company that provides lightning and weather information, television audience rating information, equipment operation management system information, and the like, and information may be obtained by connecting each terminal to a network line. The quality management service company makes a contract with a power sales company, an electric equipment maker, and an electric power consumer in exchange of necessary information, and provides the necessary information.

FIG. 27 is a diagram showing an example of the quality management service. As shown in FIG. 27, the quality management service company determines how the power quality 710 required by the power customer is based on the power receiving / distributing facility / operation information (these are information stored in the database 2). The power purchase cost 711 when the power to meet the quality is purchased from a power sales company, and a predetermined effect (for example, the cost a due to the If it is assumed that the damage amount b due to the abnormality that should occur can be suppressed to c by inserting the equipment, if a <bc, the damage due to the abnormality is suppressed by introducing the equipment. It is considered that the larger the amount is, the greater the effect of introducing the equipment is.) Cost-effectiveness if the equipment is installed at that time or if the equipment is introduced at that time, that is, the cost includes depreciation cost, equipment maintenance cost, waste heat utilization effect, etc. The effect is the total operation cost, and the effect means that the power quality is guaranteed by the introduction of the equipment, and the damage that occurs when the power quality is low is not caused, for example, in a semiconductor factory shown in FIG. In the graph showing the relationship between the duration of the instantaneous voltage drop and the holding voltage, most of the damage has occurred due to the instantaneous voltage drop exceeding 20 ms, which is hundreds of millions of yen per year. If the equipment is introduced for hundreds of millions of yen and the damage is eliminated, the cost-effectiveness is one-to-one.) 714, 71
In this case, several cases such as No. 5 are examined, and the total energy and the cost thereof generated 713 and the cost 712 of each power quality are calculated, and the information is presented to the power consumer. The power consumer comprehensively judges such information, and purchases power and installs equipment considered to be optimal.

The quality management service company obtains information on what kind of power purchase or introduction of equipment the power customer has made, notifies the power sales company or electric equipment maker, and gives it to the company when it is adopted. Charges for information and collects them from power sales companies and electrical equipment manufacturers. At the same time, the information obtained by the power consumer is charged and collected from the power consumer.

Further, the quality management service company determines the quality of the power purchased by the power consumer from the power sales company.
Responsible for power quality control by managing online or offline, or managing the power quality ultimately enjoyed by power consumers online or offline by installing or operating facilities, etc. In some cases, and may be collected from the electric power consumer.

According to this, it is possible to calculate the total energy cost and perform an optimum operation not only in the single power consumer power receiving and distribution facility but also in a plurality of power consumers and power selling companies. For example, if it turns out that a certain customer is supplying power of excessive power quality, there are excessive operating costs and excessive equipment introduction, So that nothing happens
We believe that optimal operation can be performed as a whole.

Hereinafter, an example of the optimal operation will be described.
FIG. 28 is a diagram showing the results of an investigation on the degree of influence on load equipment due to an instantaneous voltage drop, using one semiconductor factory as a case study, in order to know the details of the damage situation. For the impact analysis, an instantaneous voltage drop monitor installed on a 3-phase 200 V AC line at the end of the distribution system and an accident report submitted by each department were used. The horizontal axis in the figure is the duration of the instantaneous voltage drop, and the vertical axis is the holding voltage at the instantaneous voltage drop. Also,
In the figure, a circle indicates no damage report, indicating a case where there was no stopped device. Open triangles, black triangles, and crosses indicate small, medium, and large damage scales, respectively, and indicate cases where the number of stopped devices is less than 10, less than 50, and more than 50.

According to FIG. 28, the damage is caused by an instantaneous voltage drop exceeding 20 ms, and the longer the duration and the larger the voltage drop, the greater the damage. If an accident can be avoided within 20 ms, all of the currently stopped equipment can be protected with a smaller investment than installing the UPS device individually for all of the stopped equipment. For example, AC switching with a cut-off time of 20 ms or less on both the power receiving side of each line and the power transmitting side of, for example, a substation of a power company, which receives the power through at least two or more lines. Equipment. According to this, even if a ground fault or short circuit accident occurs due to lightning strikes or accidents, from the point where power is sent (in most cases, the substation of the electric power company) to the power receiving section of the electric power consumer, Only within 20 ms, that is, eliminating the accident within 20 ms, and then supplying power from another healthy line, the electrical equipment and facilities of the power consumer will have only a momentary voltage drop within 20 ms. Since it is not affected, there is an effect that the equipment and the equipment can be operated without stopping.

[0072]

As described above, according to the first power quality management operation support system of the present invention, power is received from a plurality of power sources through a power receiving point, and a plurality of loads are received through a bus having a switch group and a feeder circuit. It is a power quality management operation support system intended for power consumer power distribution equipment that distributes power to equipment, at least one of a system configuration diagram of the power consumer power distribution equipment, power reception voltage, power receiving equipment capacity, and contract power. Equipment information including one, power quality information including at least one of currents and voltages in the buses and feeder circuits connected to the plurality of power receiving points and the load devices, and the type, capacity, and operation of the load devices The management server acquires the load information including at least one of the status and the presence / absence of the stop at the time of the abnormality, and the damage information at the time of the abnormality, and stores the information in the storage unit. The above information is associated using the associated information, the information and the associated information are stored in a database, and the power quality required by the power consumer using the information stored in the database. Is calculated by the calculating means of the management server, and the calculated power quality is presented to the power consumer.Therefore, means for calculating the required power quality for the power consumer is provided, and the power It is possible to support optimal management and operation of customer power distribution equipment.

According to the second power quality management operation support system of the present invention, the arithmetic means associates each piece of information with each of the plurality of load devices divided into a plurality of groups. Each information and the associated information are stored in a database for each group, and the power quality required by the power consumer is calculated for each group using the information stored in the database. The required power quality can be known for each device, and a power supply or a power supply having a power quality more suitable for a load device can be selected for each group.

Further, according to the third power quality management and operation support system of the present invention, the arithmetic means is configured to execute the operation based on a condition or a conditional expression predetermined by the power consumer or input from an input terminal. Since the grouping of the plurality of load devices is performed, the management server can automatically perform grouping that meets the conditions.

Also, according to the fourth power quality management operation support system of the present invention, based on the information stored in the database, the power equipment for ensuring the power quality required by the power consumer or the Provide information on the power equipment, system configuration, or operation plan that constitutes the power equipment, so that the power customer can use the power equipment or its equipment to ensure power quality appropriate for the load equipment that he or she owns. Power system, system configuration, or operation plan that constitutes the system.

Further, according to the fifth power quality management operation support system of the present invention, the introduction of the power equipment for ensuring the power quality required by the power consumer, the power equipment constituting the power equipment, and the system configuration And provide the information to the electric power consumer.The electric power consumer considers the cost and the effect, and considers the optimal electric power equipment or the configuration of the optimal electric power equipment for ensuring the electric power quality. Power equipment and system configuration to be used.

Further, according to the sixth power quality management operation support system of the present invention, since the power equipment in the power customer receiving and distributing facility is controlled based on the information stored in the database, the power customer is controlled. Can enjoy the required power quality.

According to the seventh aspect of the power quality management operation support system of the present invention, the management server exchanges information with a terminal of an electric equipment maker or a terminal of a power generation company via a network. By exchanging information with electrical equipment manufacturers and power sales companies, it becomes possible to calculate optimal equipment designs and operation plans. In addition, contracts can be made with each electrical equipment maker or power sales company through a network.

According to the first power quality management operation supporting method of the present invention, a power consumer who receives power from a plurality of power sources through a power receiving point and distributes power to a plurality of load devices through a bus having a switch group and a feeder circuit. A power quality management operation support method for a power receiving and distribution facility, comprising: a system configuration diagram of the power consumer power receiving and distribution facility; a facility voltage including at least one of a receiving voltage, a receiving facility capacity, and a contract power. Inputting, and inputting power quality information including at least one of a current and a voltage in a bus and a feeder circuit connected to the plurality of power receiving points and each of the load devices; and Inputting load information including at least one of an operating state and presence / absence of a stop at the time of abnormality, or damage information at the time of abnormality, and storing the load information in the storage means. The input information is associated using the associated information, the input information and the associated information are stored in a database, and the power consumer is required using the information stored in the database. Calculating the power quality to be, and presenting the calculated power quality to the power consumer, providing means for calculating the required power quality for the power consumer, Based on the above, it is possible to support the optimal management and operation of the power receiving / distributing equipment.

Further, according to the second power quality management operation support method of the present invention, information on the power receiving and distributing facilities and the operation thereof from the power consumer via the network and the power quality required by the power consumer are provided. Obtaining information, obtaining information on electric power from a power selling company via a network, obtaining information on electric equipment from an electric equipment maker via a network, and using the obtained information to obtain the electric power. Power suitable for the power quality required by the customer, the step of creating information about the electrical equipment and providing the information to the power customer, the power customer,
Based on the provided information, it is possible to purchase electric power and electric equipment suitable for the required electric power quality.

Further, according to the third power quality management operation support method of the present invention, since the power quality is calculated in the first power quality management operation support system,
The electric power consumer can purchase electric power and electric equipment suitable for the required electric power quality based on the provided information.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a power quality management operation support system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a power consumer power receiving and distribution facility according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a local terminal according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a management server according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a presentation example of related information according to the first embodiment of the present invention.

FIG. 6 is a configuration diagram showing a power consumer power distribution system serving as a basis for FIG. 5 according to the first embodiment of the present invention;

FIG. 7 is a diagram for explaining an example of contents held by a database according to the first embodiment of the present invention.

FIG. 8 is a block diagram schematically showing an operation of a calculating means of the management server according to the first embodiment of the present invention.

FIG. 9 is a diagram showing a flowchart for solving an optimization problem according to the first embodiment of the present invention.

FIG. 10 is a diagram showing a flowchart for explaining some steps of FIG. 9 in further detail;

FIG. 11 is a diagram showing a facility plan proposed to an electric power consumer according to the first embodiment of the present invention.

FIG. 12 is a diagram showing the power quality according to each facility plan presented to the power consumer according to the first embodiment of the present invention.

FIG. 13 is a diagram showing an overall configuration of a power quality management operation support system according to a second embodiment of the present invention.

FIG. 14 is a block diagram showing a configuration of a management server and a database according to the second embodiment of the present invention.

FIG. 15 is a configuration diagram illustrating a power consumer power receiving and distribution facility according to the second embodiment of the present invention.

FIG. 16 is a diagram illustrating a display example of a grouping result on a display terminal according to the second embodiment of the present invention.

FIG. 17 is a diagram illustrating an example of information stored in a power quality information storage unit according to the second embodiment of the present invention.

FIG. 18 is a configuration diagram showing a power consumer power receiving and distribution facility according to a third embodiment of the present invention.

FIG. 19 is a block diagram showing a configuration of a local terminal according to the third embodiment of the present invention.

FIG. 20 is a configuration diagram showing a power consumer power receiving and distribution facility in the case where control is performed according to an instruction from a management server according to the third embodiment of the present invention.

FIG. 21 is a block diagram illustrating a configuration of a local terminal in the case where control is performed according to an instruction from a management server according to the third embodiment of the present invention.

FIG. 22 is a diagram showing an overall configuration in the case where control is performed including information on the power selling company side according to the third embodiment of the present invention.

FIG. 23 is a configuration diagram showing a power consumer power receiving and distribution facility when a local terminal independently determines and controls according to Embodiment 3 of the present invention.

FIG. 24 is a block diagram showing a configuration of a local terminal when the local terminal independently determines and controls according to the third embodiment of the present invention.

FIG. 25 is a diagram showing an overall configuration of a power quality management operation support system according to a fourth embodiment of the present invention.

FIG. 26 is a conceptual diagram showing an example of information exchange according to the fourth embodiment of the present invention.

FIG. 27 is a diagram illustrating an example of a quality management service according to the fourth embodiment of the present invention.

FIG. 28 is a diagram illustrating a degree of influence on a load device due to an instantaneous voltage drop according to the fourth embodiment of the present invention.

[Explanation of symbols]

1 management server, 2 databases, 3,301-30
7 local terminal, 4,40 network, 5 power consumer power distribution equipment, 11, 32 input terminal, 12 display terminal, 13 output terminal, 14, 15, 21, 33 input / output control means, 16 arithmetic means, 17 main program Group, 31 measuring instruments, 61 to 63 power selling companies, 101 power receiving points, 102, 103 commercial power supply system, 104 private power generation facilities, 201 facility information storage means, 202 load information storage means, 203 damage information storage means at the time of abnormality, 20
4 power quality information storage means, 205 cost information storage means, 206 operation information storage means,
500 transformer, 501 breaker, 502 PCT, 5
03 Transformers, 510, 510a to 510c, 511 to
517 Switch, 520, 521, 522 PT, 53
0,531-537 CT, 540,541-545
Equipment (load), 550 bus, 551-555 feeder circuit, 560 active filter, 601-603
Measuring instrument, 701 A terminal of a quality management service company.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tadaaki Sakamoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 5G064 AC08 AC09 AC13 BA02 BA07 CB06 CB08 DA05 5G066 AA09 AE03 AE07 AE09

Claims (10)

[Claims] 1. receiving power from a plurality of power sources through a power receiving point;
A power quality management operation support system intended for power consumer power distribution equipment that distributes power to a plurality of load devices through a bus and a feeder circuit including a switch group, a system configuration diagram of the power consumer power distribution equipment, Equipment information including at least one of a receiving voltage, a receiving equipment capacity, and a contract power, and at least one of a current and a voltage in a bus and a feeder circuit connected to the plurality of receiving points and the load devices. The management server acquires power quality information, load information including at least one of the type, capacity, operation state, and presence or absence of an abnormal stop of the load device, or damage information at the time of abnormality, Using the association information stored in the storage means to perform the association of the above information, accumulate the information and the associated information in a database, The power quality required by the power consumer is calculated by the calculation means of the management server using the information stored in the database, and the calculated power quality is presented to the power consumer. Power quality management operation support system. 2. The power quality management operation support system according to claim 1, wherein the arithmetic unit associates each piece of information with each group of the plurality of load devices into a plurality of groups, and And accumulating the associated information in a database for each group, and calculating the power quality required by the electric power consumer for each group using the information accumulated in the database. system. 3. The power quality management operation support system according to claim 2, wherein the calculating means is configured to determine the plurality of conditions based on a condition or a conditional expression predetermined by a power consumer or input from an input terminal. A power quality management operation support system, wherein the load devices are grouped. 4. The power quality management and operation support system according to claim 1, wherein the power equipment for ensuring the power quality required by the power consumer or the power facility based on the information stored in the database. A power quality management operation support system characterized by providing information on electric power equipment, system configuration, or operation plan constituting electric power consumers to electric power consumers. 5. The power quality management operation support system according to claim 4, wherein power equipment for ensuring the power quality required by the power consumer, power equipment constituting the power equipment, and system configuration are introduced. Calculate costs and benefits,
A power quality management operation support system characterized by providing the information to power consumers. 6. The power quality management operation support system according to claim 1, wherein the power equipment in the power receiving / distributing facility is controlled based on the information stored in the database. Power quality management operation support system. 7. The power quality management operation support system according to claim 1, wherein the management server exchanges information with an electric appliance manufacturer terminal or a power generation company terminal via a network. Power quality management operation support system. 8. Power is received from a plurality of power sources through a power receiving point,
A power quality management operation support method for a power customer receiving and distributing facility that distributes power to a plurality of load devices through a bus and a feeder circuit including a switch group, and a system configuration diagram of the power consumer receiving and distributing facility, Receiving the equipment information including at least one of the receiving voltage, the receiving equipment capacity, and the contract power; and at least one of the current and the voltage in the bus and the feeder circuit connected to the plurality of receiving points and the load devices. Inputting power quality information including at least one of the above, and inputting load information including at least one of the type, capacity, operating state, and presence or absence of an abnormal stop of the load device, or damage information at the time of abnormal To do
Using the association information stored in the storage means to perform the association of each of the input information, accumulate in the database each of the input information and the associated information,
Calculating a power quality required by the power consumer using the information stored in the database; and presenting the calculated power quality to the power consumer. Power quality management operation support method. 9. A step of obtaining, via a network, a power receiving / distributing facility and its operation from a power customer, and information on power quality required by the power customer, and information on power from the power selling company via the network. Obtaining the information on the electrical equipment from the electrical equipment maker via a network, and using the obtained information on the electric power suitable for the electric power quality required by the electric power consumer and the electric equipment. Creating information and providing the information to the power consumer. 10. The power quality management operation support method according to claim 9, wherein the power quality is calculated by the power quality management operation support system according to claim 1. Management operation support method.