JP2006060911A - Demand management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a demand management system that reduces cost of facilities sufficiently by minimizing the feeding capacity of feeding facilities of electric utility and that reflects its economic effect in the reduction of power rates charged to power consumers. <P>SOLUTION: This demand management system consists of individual devices 10, provided at each side of a plurality of the power consumers 2 and a central device 20 configured to be capable of communicating with each individual device 10. The individual devices 10 are configured, to perform the reduction control of individual receiving capacity that reduces the individual receiving capacity of the power consumers 2 in accordance with a command from the central device 20. If the central device 20 detects a state of excessive total receiving capacity, it determines an individual device 10', out of a plurality of individual devices 10, that is subjected to a command of performing the reduction control of the individual receiving capacity in the form of limiting the total receiving power below target total receiving power, and transmits the command to the individual device 10'. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a demand management system that manages the amount of power received by a plurality of power receivers that receive power from a power transmission and distribution line.

  Conventionally, a power receiver who receives power from a power company such as an electric power company engaged in the electric power business or an electric power company such as a specific scale electric power company newly entered into the electric power business by liberalizing the electric power market has a predetermined demand time limit (for example, 30 The amount of power received every minute) is limited, and the contract power received amount set according to the maximum value of the power received amount in a predetermined period (for example, 11 months) is set as small as possible, so that it is set according to the contract power received amount. There is a case where the electric power charge is reduced.

  On the other hand, the electric power company concludes a contract power reception amount with each power receiver, thereby reducing the peak of the total power reception amount, which is the sum of the power reception amount of each power receiver, and leveling the total power reception as much as possible. In some cases, the power supply capacity of the power supply equipment is reduced to reduce the equipment cost.

  And in order to limit the amount of power received by the power receiver in this way, the power received by the power receiver is set below the target power received that is set according to the contracted power received, such as at home or factory. There is known a demand control device configured to execute power reception amount reduction control for reducing the amount of power received by a power receiver by cutting off power reception at a power load provided to the power receiver. (For example, refer to Patent Document 1).

  Furthermore, the demand control device described in Patent Document 1 previously sets priorities for each of the plurality of power loads when there are a plurality of power loads (load groups) on the power receiver side. When the power reception amount of the power receiver is likely to exceed the target power reception amount, the power reception is preferentially interrupted with respect to the power load having a high priority.

JP-A-6-197450

  When an electric power company supplies power to multiple power receivers, it is unlikely that all the power receivers will receive power at the maximum contract power reception amount at the same time, so the total power received by each power receiver It is considered that the amount of power received hardly reaches the total of the contracted power received by each power receiver. However, an electric power company that supplies power to a plurality of power receivers considers the maximum amount of power received by each power receiver in order to ensure power supply to each power receiver with certain reliability. In some cases, it is necessary to relatively increase the power supply capacity of the power supply facility in accordance with the total amount of received contract power, and the facility cost cannot be reduced sufficiently.

  Furthermore, when the amount of power received by a certain power receiver is likely to exceed the target power received amount, even if the total power received is relatively small, the demand control device performs power reception amount lowering control at that power receiver, Since the amount is limited to be equal to or less than the target power reception amount, even when the electric power company has a margin in the power supply capability of the power supply facility, there is a case where the power cannot be efficiently supplied to the power receiver.

  The present invention has been made in view of the above-described problems. The purpose of the present invention is to reduce the power supply capacity of a power supply facility as much as possible when an electric power company supplies power to a plurality of power receivers. Cost reduction can be sufficiently achieved, and the economic effect can be reflected in the reduction of power charges on the power receiver side. In addition, the power supply capacity on the power provider side can be reduced by suppressing the execution of power reception amount reduction control on each power receiver side as much as possible. The demand management system that makes it possible to efficiently supply power to the power receiver according to the situation is realized.

A first characteristic configuration of a demand management system according to the present invention for achieving the above object is an individual demand control device provided on each of a plurality of power receivers that receive power from a transmission and distribution line;
A central demand control device configured to be communicable with each individual demand control device;
The individual demand control device is configured to execute individual power reception amount reduction control for reducing the individual power reception amount of the power receiver in accordance with the individual power reception amount reduction command received from the central demand control device,
The central demand control device includes a total received power excess state determination unit that determines a total received power excess state in which a total received power that is a total of individual received power of each power receiver exceeds a target total received power; and the total received power When the total power reception excess state is determined by the amount excess state determination means, the total power reception amount is limited to the target total power reception amount or less, and the individual power reception amount is reduced from the plurality of individual demand control devices. A command target determining unit that determines a command target individual demand control device that executes control, and a command unit that transmits the individual power reception amount reduction command to the command target individual demand control device.

  According to the first characteristic configuration, when the total power received by a plurality of power receivers is likely to exceed a predetermined target total power received, in the central demand control device, the total power received excess state determination unit is configured to The command target determining means determines the command target individual demand control device effective for limiting the total received power to the target total received power or less, and the command means determines the command target. Since the individual power reception amount reduction command is transmitted to the individual demand control device via the communication network, the command target individual demand control device that has received the individual power reception amount reduction command has a power load provided to the power receiver. The individual power reception amount reduction control is executed to reduce the individual power reception amount of the power receiver by blocking or limiting the power reception in part or all of the power source or by increasing the output of the power generation equipment provided to the power receiver. Becomes, so that the total received power amount of the plurality of power receiving user is limited to less than the target total received power amount.

  Accordingly, an electric power company that supplies power to the plurality of power receivers can reduce the facility cost by setting the target total power reception amount to be relatively small, for example, so that the power feeding capacity of the power feeding facility is relatively small. The economic effect can be reflected in the reduction of the electricity charge on the power receiver side.

  Further, since the individual demand control device to be commanded is determined in such a form that the total power reception amount is limited to the target total power reception amount or less, if the total power reception amount is relatively small, the individual demand control is performed in each power receiver. Since the device does not need to perform individual power reception amount reduction control more than necessary, the power reception amount reduction control on each power receiver side is suppressed as much as possible, and the power receiver is efficiently matched to the power supply capacity of the electric power company side. Electric power can be supplied.

  In a second characteristic configuration of the demand management system according to the present invention, at least a part of the plurality of individual demand control devices determines an individual received power excess state in which the individual received amount of the power receiver exceeds a target individual received amount. An individual power reception amount excess state determination unit is provided, and when the individual power reception amount excess state determination unit determines the individual power reception amount excess state, the individual power reception amount decrease control is executed.

According to the second characteristic configuration described above, not only when the total power received by a plurality of power receivers is likely to exceed a predetermined target total power received amount, but also the individual power received by each power receiver is likely to exceed a predetermined target individual power received amount. In this case, in the individual demand control device, the individual received power excess state determining means determines the individual received power excess state and executes the individual received power lowering control, and the received power amount of each receiver is determined. It will be limited to below the target individual power reception amount.
Therefore, each power receiver can individually set the target individual power reception amount according to the capacity of the power reception facility and the power tariff reduction target, etc., and can control the failure of the power reception facility or the individual power reception amount during a predetermined period. The amount of contract power received set according to the maximum value can be reduced as much as possible to reduce the power charge set according to the amount of contract received power.

A third characteristic configuration of the demand management system according to the present invention is that the plurality of individual demand control devices all determine an individual power reception excess state in which the individual power reception amount of the power receiver exceeds a target individual power reception amount. It includes an amount excess state determination means, and is configured to execute the individual power reception amount decrease control when the individual power reception amount excess state determination means determines the individual power reception amount excess state.
The target total power reception amount in the central demand control device is set to be smaller than the total of the target individual power reception amounts in the individual demand control devices.

  According to the third characteristic configuration, when all the individual demand control devices execute the individual power reception amount reduction control and the individual power reception amounts of all the power receivers are limited to the target individual power reception amount or less, the total power reception amount Since the ratio of the total of the target individual power reception amount to always becomes larger than 1, the target total power reception amount in the central demand control device is set to an appropriate value smaller than the total of the target individual power reception amount, and the power supply equipment The power supply capability can be made appropriate.

  According to a fourth characteristic configuration of the demand management system of the present invention, the command target determining unit determines the individual received power amount of each power receiver when the total received power excess state determining unit determines the total received power excess state. An increase rate is calculated, and the individual demand control device provided on the power receiver side where the increase rate of the individual received power is high is prioritized and determined as the command target individual demand control device. It is in.

  According to the fourth feature configuration, when the total power received by a plurality of power receivers is likely to exceed a predetermined target total power received, the individual demand control device performs the individual power reception in descending order of the increase rate of the individual power received by the power receiver. Since the amount reduction control will be executed, the rate of increase in the total received power will be greatly reduced, the possibility that the total received power will exceed the target total received power is reduced, and the target total received power will be efficiently reduced. The following can be limited.

  According to a fifth characteristic configuration of the demand management system of the present invention, the central demand control device is configured to individually reduce the amount of decrease in the individual power reception amount of the power receiver when the individual power demand reduction control is executed by the individual demand control device. An individual reduction condition database storing conditions, and the command target determining means derives a total reduction condition related to a reduction amount of the total power reception amount for limiting the total power reception amount to the target total power reception amount or less, The command target individual demand control device is determined in such a manner that the individual decrease condition stored in the individual decrease condition database is assigned to the total decrease condition.

  According to the fifth characteristic configuration, when the total received amount of a plurality of power receivers is likely to exceed a predetermined target total received amount, the total decrease derived to limit the total received amount to a target total received amount or less. The command target individual demand control device determined in a form that appropriately assigns the individual reduction condition for each power receiver to the condition executes the individual power reception amount reduction control, so that the total power reception amount is appropriately reduced. Thus, it can be efficiently limited to the target total power reception amount or less.

According to a sixth characteristic configuration of the demand management system of the present invention, at least a part of the individual demand control device notifies the central demand control device that the power generation equipment provided on the power receiver side is in an abnormally stopped state. Comprising an abnormal stop state reporting means to
Association information in which the central demand control device stores association information that associates the power generation facility with the individual demand control device that is determined as the command target individual demand control device when the power generation facility is abnormally stopped. The command target determining means includes a database and refers to the association information stored in the association information database, and associates with the power generation facility that has received the abnormal stop state report from the abnormal stop state report means. The individual demand control device is preferentially determined as the command target individual demand control device.

  According to the sixth feature configuration, as the association information, when the individual power reception amount reduction control is executed, an individual power reception amount that is equal to or greater than the individual power reception amount that is increased when the power generation facility is in the abnormal stop state. In a form that realizes a reduction in the amount of power received, by associating an individual demand control device with a power generation facility in advance, the power generation facility provided on the power receiver side is in an abnormally stopped state, so that a plurality of power receivers When the total amount of power received is likely to exceed the predetermined target total amount of power received, promptly determine the individual demand control device associated with the power generation facility in the abnormally stopped state as the command target individual demand control device, It is possible to execute individual power reception amount reduction control and reliably limit the total power reception amount to a target total power reception amount or less.

An embodiment of a demand management system according to the present invention will be described with reference to the drawings.
Note that FIG. 1 shows that power is supplied to a plurality of power receivers 2 from a specific scale electric power company (hereinafter referred to as PPS (Power Producer and Supplier)) using a transmission / distribution line 1 operated and managed by an electric power company. FIG. 2 is a diagram showing a schematic configuration diagram of a demand management system implemented in a power business to be consigned, FIG. 2 is a processing flow diagram of demand management processing executed by the demand management system, and FIG. 3 is its demand management. It is a processing flowchart of the reset process performed in a process.

The demand management system includes a plurality of individual demand control devices 10 composed of computers installed on each power receiver 2 side, and a central demand control device 20 composed of computers installed on the PPS side or the like. The device 20 is configured to be able to communicate with each of the plurality of individual demand control devices 10 via a communication network 30 such as the Internet.
The central demand control device 20 may be operated by a third party other than PPS.

  On each power receiver 2 side, a power load 3 such as an electric lamp or an electric device that consumes power in accordance with the life of the power receiver 2, and the amount of power received from the transmission / distribution line 1 (hereinafter referred to as individual power reception amount). An electric energy measuring device 7 for measuring is provided.

  Then, each power receiver 2 operates the circuit breaker 4 for the purpose of reducing the individual power reception amount of the power receiver 2, and each of the power receivers 2 b and 2 c having the power load 3 a that can stop power reception or the individual power reception of the power receiver 2. The power receivers 2a and 2c have a power generation facility 6 such as a cogeneration system that can be activated or output increased for the purpose of reducing the amount.

  The individual demand control device 10 provided on each power receiver 2 side determines the individual power reception amount of the power receiver 2 by operating the circuit breaker 4 or starting or increasing the output of the power generation equipment 6 as described above. Individual power reception amount reduction control for reducing the period is configured to be executable.

  In addition, the individual demand control device 10 provided in the power receiver 2c having both the power load 3a and the power generation facility 6 for reducing the individual power reception amount of the power receiver 2 is shut off in the individual power reception amount reduction control. Whether to activate the generator 4 or start or increase the output of the power generation equipment 6 according to preset conditions or the power receiving capacity of the power load 3a at that time, the output of the power generation equipment 6 or the like. can do.

  Each power receiver 2 receiving power from the PPS, in the power supply and demand contract concluded with the PPS, makes the total power received that is the sum of the individual power received by each power receiver 2 equal to or less than the target total power received by the PPS side. For the purpose of limiting, when an instruction is received from the PPS side, the individual demand control device 10 executes the individual power reception amount reduction control to reduce the individual power reception amount. By fastening, the PPS can make the power supply capacity of the power supply equipment as small as possible to sufficiently reduce the equipment cost, and the power receiver 2 can receive a part of the economic effect as a discount on the power charge.

  As shown in FIGS. 2 and 3, the demand management system is configured to execute demand management processing for limiting the total power reception amount to the target total power reception amount or less. A detailed configuration for executing the demand management process according to the process flow will be described below.

  The individual demand control device 10 provided on each power receiver 2 side measures the individual power reception amount of the power receiver 2 accumulated in a predetermined demand time period (for example, 30 minutes) by the power amount measuring device 7 and the measured individual power control device 10. The power reception amount is configured to be transmitted to the central demand control apparatus 20 via the communication network 30. Further, the individual power reception amount reduction described later from the central demand control apparatus 20 via the communication network 30 is performed. When the command is received, the individual power reception amount decrease control is executed according to the individual power reception amount decrease command.

  On the other hand, the central demand control device 20 includes a total received power excess state determination unit 21 that determines a total received power excess state in which the total received power that is the sum of the individual received power of each power receiver 2 exceeds the target total received power, When the total received power excess state determination unit 21 determines the total received power excess state, the individual received power amount described above is selected from the plurality of individual demand control devices 10 in such a manner that the total received power amount is limited to the target total received power amount or less. The command target determining means 22 for determining the command target individual demand control apparatus 10 ′ for executing the decrease control, and the command means 23 for transmitting the individual power reception amount decrease command to the command target individual demand control apparatus 10 ′ are configured. ing.

  Specifically, the central demand control device 20 monitors the transition of the total power reception amount calculated by totaling the individual power reception amounts received from the individual demand control devices 10 by the total power reception amount excess state determination means 21. Then, it is determined whether or not the total power reception amount excess state is reached before the above-described demand time period ends (step # 201 to step # 203).

  When the central demand control device 20 determines that the total received power excess state determining unit 21 is in the total received power excess state, the command target determining unit 22 determines the total received power target in the demand time period. The command target individual demand control device 10 ′ effective for limiting to the total power received amount or less is determined (step # 204), and the command means 23 sends a communication network to the command target individual demand control device 10 ′. 30 is configured to transmit an individual power reception amount decrease command (step # 205).

Therefore, the command target individual demand control device 10 ′ that has received the individual power reception amount decrease command from the central demand control device 20 executes the individual power reception amount decrease control according to the individual power reception amount decrease command (step # 105, Step # 104), the individual power reception amount of the power receiver 2 is reduced.
Then, by executing the demand management process as described above, the total power reception amount is limited to be equal to or less than the target total power reception amount.

  Furthermore, the individual demand control device 10 functions as the individual power reception amount excess state determination unit 11 that determines an individual power reception amount excess state in which the individual power reception amount of the power receiver 2 exceeds a predetermined target individual power reception amount in the demand time period. At the same time, when the individual power reception amount excess state determination means 11 determines the individual power reception amount excess state, the individual power reception amount decrease control is executed.

  Specifically, the individual demand control device 10 monitors the transition of the individual power reception amount of the power receiver 2 by the individual power reception amount excess state determination unit 11 and enters the individual power reception amount excess state until the demand time period ends. If it is determined whether or not the individual power reception amount excess state is reached, the individual power reception amount reduction control is executed (steps # 101 to # 104), and the individual power reception amount is equal to or less than the target individual power reception amount. Restrict to.

  Further, when the individual demand control devices 10 of all the power receivers 2 function as the individual power reception amount excess state determination unit 11 and the individual power reception amount excess state determination unit 11 determines the individual power reception amount excess state. When configured to limit the individual received amount to the target individual received amount or less by executing the individual received amount decrease control, the target total received amount that is the upper limit of the total received amount is the individual received amount. It is set to be smaller than the total of the target individual power reception amounts that are the upper limit of the amount. For example, the target total power reception amount is set according to the power supply capability or the like on the PPS side, and the target individual power reception amount is set according to the capacity of the power receiving facility in each power receiver 2 or the like.

  When the demand time limit ends, the individual demand control device 10 and the central demand control device 20 are configured to execute a predetermined reset process (step # 300, step # 400) as shown in FIG.

  Specifically, the individual demand control device 10 and the central demand control device 20 reset (set to 0) the individual power reception amount and the total power reception amount in the demand time period accumulated so far in the reset process (step # 301, step #). 401).

  Next, the central demand control device 20 determines whether or not to terminate the individual power reception amount reduction control executed by the command target individual demand control device 10 ′ (step # 402), and does not end the individual power reception amount reduction control. Is determined, a continuation command is transmitted to the command target individual demand control device 10 '(step # 403).

  Note that the central demand control device 20 determines in step # 402 that, for example, from the past total received power amount, the time point is a time zone in which the total received power amount easily exceeds the target total received power amount, When there is a power generation facility 6 that is in an abnormally stopped state due to a failure or the like at the time, it can be determined that the individual power reception amount reduction control that is being executed by the command target individual demand control device 10 ′ is not terminated.

  On the other hand, the individual demand control device 10 determines whether or not the continuation command is received from the central demand control device 20 (step # 302), and ends the individual power reception amount reduction control only when the continuation command is not received. (Step # 303) When the continuation command is received, the individual power reception amount reduction control is continuously executed without ending.

  Next, description is added about the 1st-3rd embodiment about the form in which the command object determination means 22 in which the central demand control apparatus 20 functions determines the command object individual demand control apparatus 10 '.

[First Embodiment]
In the first embodiment, the command target determination unit 22 that the central demand control device 20 functions determines the individual power reception amount of each power receiver 2 when the total power reception amount excess state determination unit 21 determines the total power reception amount excess state. The increase rate is calculated, and the command demand individual demand control device 10 ′ is determined with priority given to the individual demand control device 10 provided on the power receiver 2 side where the increase rate of the calculated individual power reception amount is high. ing.
Specifically, the central demand control device 20 stores the individual received power amount received from each individual demand control device 10 in time series, and the command target determining means 22 determines the individual received power amount of each power receiver 2. The increase rate is calculated, and the command target individual demand control device 10 ′ is sequentially determined in descending order of the increase rate until the total received power can be limited to the target total received power or less. The apparatus 10 ′ is caused to execute individual power reception amount reduction control.

  Then, by determining the command target individual demand control device 10 ′ in this way, the rate of increase in the total power reception amount is greatly reduced at an early stage, and the possibility that the total power reception amount exceeds the target total power reception amount is reduced. The total received power is efficiently limited to the target total received power or less.

[Second Embodiment]
In the second embodiment, the individual demand condition database in which the central demand control device 20 stores the individual decline conditions related to the amount of reduction of the individual power reception amount of the power receiver 2 when the individual power demand reduction control is executed by each individual demand control device 10. 24.
Then, the command target determining unit 22 in which the central demand control device 20 functions derives the total reduction condition regarding the reduction amount of the total power reception amount for limiting the total power reception amount to the target total power reception amount or less, and individually sets the total reduction condition. The command target individual demand control device 10 ′ is determined in such a manner as to assign the individual lowering conditions stored in the lowering condition database 24.

  Specifically, the individual decrease condition database 24 is set as the capacity of the power load 3a that is stopped receiving power by the individual power reception amount decrease control, the increased output of the power generation facility 6 that is activated or increased by the individual power reception amount decrease control, and the like. The individual reduced power and the like are stored for each individual demand control device 10 as the individual reduction condition relating to the reduction amount of the individual power reception amount.

  When the command target determining unit 22 determines that the total power reception amount excess state is reached, the command target determining unit 22 should reduce the total decrease time, which is the time from the time until the end of the demand period, and the end of the demand period. The total reduction amount of the total power reception amount is derived, and the total reduction power obtained by dividing the total reduction amount by the total reduction time is derived as the total reduction condition and stored in the individual reduction condition database 24. Referring to the individual conditions of each power receiver, the total of individual reduced power of each command target individual demand control device 10 ′ is equal to or greater than the total reduced power, and the difference between the total individual reduced power and the total reduced power The command target individual demand control device 10 ′ is determined in a form that minimizes the command target, and the command target individual demand control device 10 ′ is caused to execute the individual power reception amount reduction control.

  By determining the command target individual demand control device 10 ′ in this way, the total power reception amount can be appropriately reduced as necessary to efficiently limit the total power reception amount below the target total power reception amount.

  Moreover, in the said individual fall condition database 24, as said individual fall condition, in addition to the said individual fall electric power, the time which can stop the receiving of the electric power load 3, or the power generation equipment 3 is started or the output is raised. In this case, the command target determining means 22 sets the maximum time for the command target individual demand control device 10 'to execute the individual power reception amount control below the individual decrease time. The command target individual demand control device 10 ′ may be determined in such a manner as to be limited to the above. In addition, when the individual demand control device 10 activates or increases the output of the power generation device 6 in the individual power reception amount reduction control, the command target determining unit 22 determines the output increase time required when the power generation device 6 is activated or the output is increased. The individual decrease time may be set in consideration of the output decrease time required when the power generator 6 is stopped or the output decreases.

[Third Embodiment]
In the third embodiment, at least a part of the individual demand control device 10 is in an abnormally stopped state in which the power generation equipment 6 provided on the power receivers 2a, 2c side cannot be started due to a failure or maintenance. Is configured to function as an abnormal stop state notifying means 12 for notifying the central demand control device 20 of the error.
Further, the central demand controller 20 associates the association information that associates the power generation facility 6 with the individual demand control device 10 that is determined as the command target individual demand control device 10 ′ when the power generation facility 6 is in an abnormally stopped state. A stored association information database 25 is provided.
The command target determining means 22 in which the central demand control device 20 functions refers to the association information stored in the association information database 25 and receives the report of the abnormally stopped state from the abnormally stopped state notifying means 12. The individual demand control device 10 associated with 6 is prioritized and the command target individual demand control device 10 ′ is determined.

  Specifically, the abnormal stop state reporting means 12 that the individual demand control device 10 functions is an abnormal stop for reporting that the power generation facility 6 has stopped abnormally when the power generation facility 6 has stopped abnormally due to a failure or the like. A signal is transmitted to the central demand control device 20 via the communication network 30. On the other hand, when the power generation facility 6 is recovered, a recovery signal for notifying that the abnormal stop of the power generation facility 6 has ended is communicated. The data is transmitted to the central demand control device 20 via the network 30.

  The central demand control device 20 receives the abnormal stop signal or the recovery signal from the individual demand control device 10 to identify the abnormally stopped or recovered power generation facility 6, and then the power generation facility 6 It is possible to recognize that it has stopped abnormally or has recovered.

  Further, the association information database 25 indicates the capacity of the power load 3a that is stopped by the individual power reception amount reduction control and the increase of the power generation facility 6 that is activated or increased in output by the individual power reception reduction control. Association information that associates the power generation equipment 6 with the individual demand control device 10 in a form in which the individual reduced power set as the output or the like is equal to or higher than the rated output of the power generation equipment 6 and recognizes the association. Store.

  Then, the command target determining means 22 in which the central demand control device 20 functions is stored in the association information database 25 when, for example, it is recognized that a power generation facility 6 has stopped abnormally by receiving an abnormal stop signal. With reference to the associated information, the individual demand control device 10 associated with the power generation facility 6 is determined to be the command target individual demand control device 10 ′, and the command target individual demand control device 10 ′ decreases the individual power reception amount. Make control run.

  Then, by determining the command target individual demand control device 10 ′ in this way, when the total power reception amount is likely to exceed the target total power reception amount due to the power generation facility 6 being in an abnormally stopped state, the abnormality is quickly detected. It is possible to cause the individual demand control device associated with the power generation facility in the stopped state to execute the individual power reception amount reduction control, and to reliably limit the total power reception amount to the target total power reception amount or less.

  Note that the command target determining unit 22 may be configured to determine the command target individual demand control device 10 ′ in another form. For example, when the total power reception excess state determination unit 21 determines the total power reception excess state, whether or not the individual demand control device 10 may execute the individual power reception amount reduction control for each power receiver 2 is determined. The individual demand control device 10 on the side of the power receiver 2 that has received a reply that it may be executed via the communication network 30 or the like may be determined as the command target individual demand control device 10 ′. I do not care.

  In the above embodiment, the target total power reception amount in the central demand control device 20 is set to be smaller than the sum of the target individual power reception amounts in the individual demand control devices 10, but separately, the target total power reception amount is set as the target individual power reception amount. You may set more than the sum of.

  Moreover, in the said embodiment, although all the individual demand control apparatuses 10 were provided with the individual power receiving amount excess determination means 11, it comprised so that the individual power receiving amount of each power receiving person 2 might be restrict | limited to below a target individual power receiving amount. In addition, all or a part of the individual demand control device 10 does not include the individual power reception amount excess determination unit 11, and the individual power reception amount of each power receiver 2 may not be limited to the target individual power reception amount or less. I do not care.

Schematic diagram of demand management system Flow diagram showing demand management processing Flow chart showing reset processing

Explanation of symbols

1: Power transmission and distribution lines 2, 2a, 2b, 2c: Power receiver 6: Power generation facility 10: Individual demand control device 11: Individual power reception excess state determination means 12: Abnormal stop state notification means 20: Central demand control device 21: Total Received power excess state determining means 22: Command target determining means M
23: Command means 24: Individual drop condition database 25: Association information database

Claims (6)

An individual demand control device provided on each of a plurality of power receivers receiving power from a power transmission and distribution line;
A central demand control device configured to be communicable with each individual demand control device;
The individual demand control device is configured to execute individual power reception amount reduction control for reducing the individual power reception amount of the power receiver in accordance with the individual power reception amount reduction command received from the central demand control device,
The central demand control device includes a total received power excess state determination unit that determines a total received power excess state in which a total received power that is a total of individual received power of each power receiver exceeds a target total received power; and the total received power When the total power reception excess state is determined by the amount excess state determination means, the individual power reception amount is reduced from among the plurality of individual demand control devices in a form in which the total power reception amount is limited to the target total power reception amount or less. A demand management system comprising: command target determining means for determining a command target individual demand control apparatus for executing control; and command means for transmitting the individual power reception amount reduction command to the command target individual demand control apparatus.   At least a part of the plurality of individual demand control devices includes individual received power excess state determining means for determining an individual received power excess state in which the individual received amount of the power receiver exceeds a target individual received amount, and the individual received power The demand management system according to claim 1, wherein the individual power reception amount reduction control is executed when the individual power reception amount excess state is determined by an amount excess state determination unit. All of the plurality of individual demand control devices include individual received power excess state determining means for determining an individual received power excess state in which the individual received amount of the power receiver exceeds a target individual received power amount, and the individual received power excess It is configured to execute the individual power reception amount decrease control when the state determination means determines the individual power reception amount excess state,
The demand management system according to claim 1, wherein the target total power reception amount in the central demand control device is set to be smaller than a total of the target individual power reception amounts in the individual demand control devices.   The command target determining means calculates an increase rate of the individual power reception amount of each power receiver when the total power reception amount excess state determination unit determines the total power reception amount excess state, and the increase rate of the individual power reception amount is The demand management according to any one of claims 1 to 3, wherein the individual demand control device provided on a higher power receiver side is preferentially determined as the command target individual demand control device. system.   The central demand control device includes an individual reduction condition database storing an individual reduction condition regarding a reduction amount of the individual power reception amount of the power receiver when the individual power reception amount reduction control is executed by each individual demand control device, and the command The object determining means derives a total reduction condition related to a reduction amount of the total power reception amount for limiting the total power reception amount to the target total power reception amount or less, and the total reduction condition is stored in the individual reduction condition database. The demand management system according to any one of claims 1 to 3, wherein the command target individual demand control device is determined in a form in which the individual decrease condition is assigned. At least some of the individual demand control devices are configured to include an abnormal stop state notification means for notifying the central demand control device that the power generation equipment provided on the power receiver side is in an abnormal stop state,
Association information in which the central demand control device stores association information that associates the power generation facility with the individual demand control device that is determined as the command target individual demand control device when the power generation facility is abnormally stopped. The command target determining means includes a database and refers to the association information stored in the association information database, and associates with the power generation facility that has received the abnormal stop state report from the abnormal stop state report means. The demand management system according to any one of claims 1 to 3, wherein the commanded individual demand control device is determined with priority given to the individual demand control device.

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