CN115407146A - Grid current monitoring method, device, system, electronic equipment and storage medium - Google Patents

Abstract

Embodiments of the present invention propose a power grid current monitoring method, device, system, electronic equipment, and storage medium, which belong to the field of data processing, and the method applied to a collection terminal connected to an area power grid includes: collecting power data of an area power grid in real time, and The electric energy data is stored in the array corresponding to the collection time point. When the interval time reaches the monitoring cycle, according to the electric energy data collected at the current moment and the array of the previous collection cycle at the current moment, it is judged whether the power grid in the area has a sudden change in current. If so, then Report the current mutation signal to realize timely monitoring of whether there is a current mutation in the power grid in the area, and help reduce the probability of damage to electrical equipment due to current mutation.

Description

Grid current monitoring method, device, system, electronic equipment and storage medium

technical field

The present invention relates to the field of data processing, in particular to a grid current monitoring method, device, system, electronic equipment and storage medium.

Background technique

With the rapid development of the power industry, power information collection terminals are widely used in the monitoring and collection of power systems. The power information collection terminals are mainly responsible for the collection, data management, data transmission and execution or forwarding of power information at each information collection point. The device that sends the control command. For example, the power collection terminal collects the data of the electric energy meter in the station area, so as to realize the daily monitoring of the electricity consumption of residential users, and then control the power supply situation of the station area.

The distribution of the power network is complex, and there will be many emergencies, such as sudden changes in current. However, it is currently impossible to monitor the instantaneous fluctuation of current in the power network, that is, the sudden change of current, which makes the electrical equipment easily damaged due to excessive current fluctuation.

Contents of the invention

In view of this, the object of the present invention is to provide a grid current monitoring method, device, system, electronic equipment and storage medium, which can monitor in real time whether there is a sudden change in current in the grid in the area, and help reduce the The probability of mutation and damage.

In order to achieve the above object, the technical solution adopted in the embodiment of the present invention is as follows:

In the first aspect, an embodiment of the present invention provides a grid current monitoring method, which is applied to a collection terminal, and the collection terminal is connected to a power grid in an area. The method includes:

Collecting the electric energy data of the power grid in the area in real time, and storing the electric energy data in an array corresponding to the collection time point; wherein, one array includes all electric energy data in one collection cycle;

When the interval time reaches the monitoring period, according to the electric energy data collected at the current moment, and the array of the previous collection period at the current moment, it is judged whether the power grid in the area has a sudden change in current; wherein, the monitoring period is a multiple of the collection period ;

If so, set the position of the sudden change sign of the electric current of the area power grid as the first mark, put the electric energy data collected at the current moment, the first mark, and the identification of the electric power grid of the area into the current sudden change signal, and report the Current mutation signal.

Further, the electric energy data includes a current value and a voltage value, and the step of judging whether a current mutation occurs in the area power grid according to the electric energy data collected at the current moment and the array of the previous collection cycle at the current moment includes:

Calculate the average voltage value of the previous acquisition period based on the array corresponding to the previous acquisition period at the current moment;

If the average voltage value reaches the normal voltage threshold, then based on all the current values in the array in the previous acquisition cycle, it is judged whether the current current value of the power grid in the area meets the sudden change judgment condition;

If the current current value meets the sudden change judgment condition, within the preset time period after the current moment, collect multiple current values of the area power grid as an evaluation current group, and judge whether the area power grid is based on the evaluation current group A sudden change in current occurs.

Further, the step of judging whether the current current value of the power grid in the area meets the mutation judgment condition based on all the current values in the array of the previous collection cycle includes:

Calculate the average current value of the previous collection cycle based on the array of the previous collection cycle;

The product of the average current value and the preset current upper limit threshold is used as the first current threshold, and the product of the average current value and the preset current lower limit threshold is used as the second current threshold;

Judging whether the current current value of the area grid is greater than the first current threshold or less than the second current threshold, if yes, the current current value meets the sudden change judgment condition.

Further, the step of judging whether a sudden change of current occurs in the area power grid according to the evaluation current group includes:

comparing each of the rated current values to the first current threshold and the second current threshold, respectively;

If any current value in the evaluated current values is greater than the first current threshold or less than the second current threshold, it is determined that a sudden change in current occurs in the regional power grid.

Further, the monitoring period is at least ten times the preset duration, and the collection period is at least ten times the preset duration.

Further, the normal voltage threshold includes a product value of the rated voltage of the area power grid and a preset percentage.

In the second aspect, an embodiment of the present invention provides a power grid current monitoring device. The power grid current monitoring device is applied to a collection terminal, and the collection terminal is connected to a power grid in an area. The power grid current monitoring device includes a collection module, a monitoring module and a reporting module. module;

The collection module is used to collect the electric energy data of the power grid in real time, and store the electric energy data in an array corresponding to the collection time point; wherein, one of the arrays includes all electric energy data in one collection cycle;

The monitoring module is used to judge whether a current mutation occurs in the power grid in the area according to the electric energy data collected at the current moment and the array of the previous collection period at the current moment when the interval time reaches the monitoring period; wherein, the monitoring period is a multiple of the collection period;

The reporting module is used to determine that when a sudden change occurs in the power grid in the area, the position of the flag indicating the sudden change in current of the power grid in the area is set as the first flag, and the electric energy data collected at the current moment, the first flag, and the Put the identification of the power grid in the above area into the current mutation signal, and report the current mutation signal.

In a third aspect, an embodiment of the present invention provides a power grid current monitoring system, including a communication-connected collection terminal and a master station server, and the collection terminal is connected to an area power grid;

The collection terminal is used to implement the grid current monitoring method as described in the first aspect;

The master station server is configured to receive the current sudden change signal reported by the collection terminal.

In a fourth aspect, an embodiment of the present invention provides an electronic device, including a processor and a memory, the memory stores a computer program that can be executed by the processor, and the processor can execute the computer program to implement the above-mentioned A grid current monitoring method described in one aspect.

In a fifth aspect, an embodiment of the present invention provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the power grid current monitoring method as described in the first aspect is implemented.

In the power grid current monitoring method, device, system, electronic equipment, and storage medium provided by the embodiments of the present invention, the acquisition terminal collects the electric energy data of the area grid where it is located in real time, and stores it in the array of the acquisition cycle corresponding to the acquisition time, and every interval When the time reaches the monitoring period, the acquisition terminal judges whether the power grid in the area has a sudden change of current according to the electric energy data at the current time and the array of the previous acquisition cycle at the current time. The sudden change signal enables the maintenance personnel to know the sudden change of the current of the power grid in a timely manner, so as to realize the timely monitoring of whether there is a sudden change of current in the power grid of the area, and help reduce the probability of damage to electrical equipment due to sudden change of current.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 shows a schematic structural diagram of a grid current monitoring system provided by an embodiment of the present invention.

Fig. 2 shows a schematic flowchart of a grid current monitoring method provided by an embodiment of the present invention.

FIG. 3 shows a schematic flowchart of some sub-steps of step S13 in FIG. 1 .

FIG. 4 shows a schematic flowchart of some sub-steps of step S132 in FIG. 3 .

FIG. 5 shows a schematic flowchart of some sub-steps of step S133 in FIG. 3 .

Fig. 6 shows a schematic block diagram of a grid current monitoring device provided by an embodiment of the present invention.

Fig. 7 shows a schematic block diagram of an electronic device provided by an embodiment of the present invention.

Reference signs: 100-grid current monitoring system; 110-main station server; 120-acquisition terminal; 130-grid current monitoring device; 140-acquisition module; 150-monitoring module; 160-reporting module; 170-electronic equipment.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that relative terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Power information collection terminals are widely used in the monitoring and collection of power systems. Power information collection terminals are mainly responsible for the collection of power information at each information collection point, data management, data transmission, and execution or forwarding of control commands issued by the master station. . For example, the power collection terminal collects the data of the electric energy meter in the station area, so as to realize the daily monitoring of the electricity consumption of residential users, and then control the power supply situation of the station area.

The distribution of the power system network (grid) is complex, and there will be many emergencies, such as sudden changes in current. However, it is currently impossible to monitor the instantaneous fluctuation of the current in the grid, that is, the sudden change of current. When the current changes suddenly, the electrical equipment is easily damaged due to excessive current fluctuations, and there is a serious risk of electrical safety.

Based on the above considerations, the embodiment of the present invention provides a power grid current monitoring scheme, which can realize real-time monitoring of whether there is a sudden change in current in the power grid in the area, and at the same time help to reduce the probability of damage to electrical equipment due to a sudden change in current, and reduce the power grid. Electricity safety risk.

In one embodiment, referring to FIG. 1 , a power grid current monitoring system 100 is provided. The power grid current monitoring system 100 includes a main station server 110 and a plurality of collection terminals 120. Between each collection terminal 120 and the main station server 110 The communication connection may be through a network, or may be a wired or wireless communication connection. Each collection terminal 120 is connected to a power grid of a certain area, that is, the collection terminal 120 is connected to the power grid of a certain area.

The collection terminal 120 is used to collect the electric energy data of the power grid in the area in real time, and store the electric energy data into an array corresponding to the collection time point. Among them, an array includes all electric energy data in a collection cycle.

The collection terminal 120 is also used to determine whether a sudden change of current occurs in the power grid of the area according to the electric energy data collected at the current moment and the array of the previous collection cycle at the current moment when the interval time reaches the monitoring cycle, and if so, the current of the power grid of the area is The position of the sudden change mark is the first mark, and the electric energy data collected at the current moment, the first mark, and the mark of the area power grid are put into the current sudden change signal, and the current sudden change signal is reported.

The master station server 110 is used to receive the current mutation signal reported by any collection terminal 120, and remind the operation and maintenance personnel to maintain the power grid in the area where the collection terminal 120 is located.

It should be noted that the monitoring period is a multiple of the collection period. For example, if the collection period is 1 second, the corresponding monitoring period of the electric energy data collected within 1 second stored in each array can be 1 second, 2 seconds, 3 seconds, etc.

Through the above-mentioned grid current monitoring system 100, it is possible to timely monitor whether a current mutation occurs in the power grid in the area, and remind the operation and maintenance personnel to deal with the power grid in the area in time after the sudden change in current occurs, thereby helping to reduce the power consumption safety of users in the power grid in the area risk.

In one embodiment, referring to FIG. 2 , a grid current monitoring method is provided. In this embodiment, S11 is illustrated by applying the grid current monitoring method to the collection terminal 120 in FIG. 1 to collect the power data of the power grid in real time and store the power data into the array corresponding to the collection time point.

Wherein, each array corresponds to a collection period, and one array includes all electric energy data in one collection period.

S13, when the interval time reaches the monitoring cycle, judge whether the power grid in the area has a sudden change of current according to the electric energy data collected at the current time and the array of the previous collection cycle at the current time.

The monitoring period must be greater than or equal to the collection period, and the monitoring period is a multiple of the collection period.

S15, if yes, set the position of the current mutation mark of the area power grid as the first mark, put the electric energy data collected at the current moment, the first mark, and the mark of the area power grid into the current mutation signal, and report the current mutation signal.

It should be noted that the flag bit refers to the flag bit of the current mutation, which can be two flags of "0" and "1" ("0" can be the second flag, indicating no current mutation, and "1" can be the first flag. mark, which indicates that there is a sudden change in current), the logo of the regional power grid is used to refer to the regional power grid, and different regional power grids have different logos (for example, regional power grid A, regional power grid B, regional power grid C and regional power grid D, etc.), so that Because the main station server and operation and maintenance personnel distinguish different regional power grids according to the identification.

Exemplarily, the collection terminal is connected to the power grid A of the area, and the collection period is set to T, and the monitoring period is 2T. Each collection period corresponds to an array, which is used to store the data collected by the collection terminal in the collection period corresponding to the array. power data. The collection terminal collects the electric energy data (including but not limited to current value and voltage value) of the power grid A in real time, and stores the electric energy data in the corresponding array according to the collection time of the electric energy data. At the same time, the acquisition terminal monitors once every interval of 2T: when the time interval from the last monitoring time point (which can be t time) reaches 2T, according to the electric energy data collected at the current time (t+2T time), and t The array corresponding to time +T to time t+2T is used to determine whether a sudden change in current occurs during this period.

If it is determined that a sudden change in current occurs, the flag position of the sudden change in current of the grid A in the area is set as the first flag (the first flag can be "1", and the second flag opposite to the first flag can be "0"), and according to The power data collected at the current moment is reported to the master station server as a current mutation signal.

When the master station server is an operation and maintenance server, the operation and maintenance personnel can be notified in time to maintain the grid A in the area. The master station server can also send the operation and maintenance information to the operation and maintenance personnel's operation and maintenance terminal to remind the operation and maintenance personnel to maintain the power grid A in the area. It is also possible that the main station server maintains the grid A in the area, and so on. In this embodiment, there is no unique limitation on the subsequent processing work of the master station server.

In the above grid current monitoring method, by collecting the electric energy data of the area grid in real time and monitoring the sudden change of the current at intervals, it is possible to timely monitor whether there is a sudden change in the current in the grid of the area, and report it in time when there is a sudden change in the current, so that there is Help reduce the probability of damage to electrical equipment due to sudden changes in current.

In order to reduce the amount of calculation in the monitoring process of sudden current changes, reduce the calculation cost, and at the same time ensure the accuracy of the monitoring results of sudden current changes, in one embodiment, a normal voltage threshold and a sudden change judgment condition are introduced into the monitoring of sudden current changes. In detail, referring to FIG. 3 , the above-mentioned step S13 may include the following sub-steps, through which it is judged whether a current sudden change occurs in the area power grid.

S131. Based on the array corresponding to the previous collection period at the current moment, calculate the average voltage value of the previous collection period.

S132. If the average voltage value reaches the normal voltage threshold, judge whether the current current value of the power grid in the area meets the sudden change judgment condition based on all the current values in the array in the previous collection cycle.

Wherein, the setting mode of the normal voltage threshold can be flexibly selected, for example, it can be an empirical value, or it can be calculated according to certain rules. In one embodiment, the normal voltage threshold may include the product value of the rated voltage of the area power grid and a preset percentage, wherein the preset percentage may be 60%, that is, the normal voltage threshold=rated voltage*60%, or other percentage.

S133. If the current current value meets the sudden change judgment condition, within a preset period of time after the current moment, collect multiple current values of the area power grid as an evaluation current group, and judge whether the area power grid has a current mutation according to the evaluation current group.

Exemplarily, every monitoring period, first calculate the average voltage of the previous acquisition period at the current moment, if the array of the previous acquisition period includes six voltage values, take the average value of these six voltage values as the average voltage value. If the average voltage value does not reach the normal voltage threshold, it indicates that the electric energy in the previous acquisition cycle is abnormal (voltage is abnormal), and it is meaningless to monitor whether the current changes suddenly. Therefore, at this time, the current sudden change judgment is abandoned.

If the average voltage value reaches the normal voltage threshold, the electric energy of the power grid in the area is normal. At this time, further according to all the current values in the array of the previous acquisition cycle, it is judged whether the current value at the current moment meets the mutation judgment condition. When the mutation judgment condition is reached , Judgment of sudden current change: According to multiple current values within the preset time period after the current moment, it is judged whether the power grid has a sudden change of current. If the current value at the current moment does not meet the sudden change judgment condition, there is no need to further judge the situation of the current value within the preset time period after the current moment.

Through the above steps S131-S132, before performing the current mutation judgment calculation, set the two conditions of reaching the normal voltage threshold and reaching the mutation judgment condition, so that it is not necessary to calculate all the data every time, thereby reducing the amount of calculation and reducing the calculation cost , can also improve the accuracy of current mutation determination.

Further, in one embodiment, in order to improve the accuracy of current sudden change determination, an upper current threshold and a current lower limit threshold are introduced into the sudden change determination condition. In more detail, referring to FIG. 4 , the above-mentioned step S132 may include the following sub-steps to realize whether the current current value of the regional power grid meets the sudden change judgment condition based on all the current values in the array in the previous acquisition period.

S1321. Based on the array of the previous collection period, calculate the average current value of the previous collection period.

S1322. Use the product of the average current value and the preset current upper limit threshold as the first current threshold, and use the product of the average current value and the preset current lower limit threshold as the second current threshold.

Wherein, the preset current upper limit threshold and current lower limit threshold can be values calculated according to the electric energy characteristics of the area grid in normal operation. It should be understood that this method is not the only feasible way to calculate the current upper limit threshold and current lower limit threshold. The method is not uniquely limited in this embodiment.

S1323. Determine whether the current current value of the regional power grid is greater than the first current threshold or less than the second current threshold. If yes, the current current value meets the sudden change determination condition.

When the current current value of the area power grid is greater than the first current threshold (the product of the average current value of the previous acquisition period and the preset current upper limit threshold), or the current current value is less than the second current threshold (the average current value of the previous acquisition period and the preset current lower limit threshold), the current current value will produce a preliminary mutation compared with the previous cycle, and the mutation judgment condition is met.

Under normal circumstances, the sudden change of current is not temporary. Therefore, after the current current value reaches the mutation judgment condition, in order to eliminate the influence of non-current mutation on the judgment result, the preset time length is set, and whether a current mutation occurs is judged according to the current situation within the preset time length after the current moment, that is, according to the duration After reaching a certain period of time, it can be determined that a sudden change in current occurs. On the basis of the above, referring to FIG. 5 , the above step S133 may determine whether a sudden change in current occurs through the following steps.

S1331. Comparing each current value in the evaluation current value with the first current threshold and the second current threshold respectively.

S1332. If any current value in the evaluated current values is greater than the first current threshold or less than the second current threshold, it is determined that a sudden change of current occurs in the regional power grid.

Through the above steps S1331-S1332, any current value within the preset duration is greater than the first current threshold, or less than the second current threshold, that is, any current value within the preset duration is not within the normal current range (not When it is within the range formed by the first current threshold and the second current threshold), it is determined that a sudden change of current occurs in the power grid in the area.

Through the above steps S131 to S133 and the sub-steps of each step, it is realized that when the current current value is not within the normal current range and the duration reaches the preset duration, it is determined that a sudden change occurs in the power grid in the area.

It should be noted that, in order to reduce the influence caused by the small gap between the collection cycle, the monitoring cycle and the preset time length, and improve the judgment accuracy, in the embodiment of the present invention, the monitoring cycle is at least ten times the preset time length , the acquisition period is at least ten times the preset duration. For example, when the preset duration is 6 seconds, the acquisition period is at least 1 minute, and the monitoring period is also at least 1 minute.

Through the above settings, the reference of the average current value, the first current threshold and the second current threshold to the current current value and the current value within the preset time period is improved, which in turn helps to improve the accuracy of determination.

The preset current upper limit threshold, current lower limit threshold and normal voltage threshold in the above embodiment are pre-stored in the acquisition terminal, and the above current upper limit threshold, current lower limit threshold and normal voltage can be modified according to different usage scenarios and different usage requirements Threshold to improve the scope of application of the scene.

The power grid current monitoring method provided by the embodiment of the present invention can collect the power data of the area power grid in real time during the operation of the collection terminal, and perform the processing and analysis of the current mutation according to the collected power data. If it is determined that the current has a sudden change, the collection terminal will generate a current mutation information, and report the current mutation information to the master station server of the power consumption management master station system through the wireless public network or Ethernet, so that the personnel of the power supply bureau can monitor the abnormality in real time, and dispatch on-site maintenance personnel to deal with it in time to maintain the stability of the power grid. Reduce electrical safety risks.

Based on the idea of the above grid current monitoring method, in one embodiment, a grid current monitoring device 130 is provided, which can be applied to the collection terminal 120 in FIG. 1. Referring to FIG. 6, the grid current monitoring device 130 includes a collection module 140, Monitoring module 150 and reporting module 160.

The collection module 140 is used to collect the electric energy data of the area grid in real time, and store the electric energy data into an array corresponding to the collection time point. Among them, an array includes all electric energy data in a collection cycle.

The monitoring module 150 is used for judging whether the power grid in the area has a sudden change of current according to the electric energy data collected at the current moment and the array of the previous collection period at the current moment when the interval time reaches the monitoring period. Wherein, the monitoring period is a multiple of the collection period.

The reporting module 160 is used to determine that when a sudden change occurs in the power grid of the area, the position of the sign of the sudden change in the current of the power grid of the area is set as the first mark, and the electric energy data collected at the current moment, the first mark, and the identification of the power grid of the area are put into the current sudden change signal, and report the current mutation signal.

In the above grid current monitoring device 130, through the synergistic effect of the acquisition module 140, the monitoring module 150 and the reporting module 160, it is possible to monitor in time whether there is a sudden change in the current in the power grid in the area, and it helps to reduce the damage of electrical equipment due to the sudden change in current. The probability.

For the specific limitations of the grid current monitoring device 130, reference may be made to the above-mentioned definition of the grid current monitoring method, which will not be repeated here. Each module in the above grid current monitoring device 130 may be fully or partially implemented by software, hardware or a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the electronic device 170 in the form of hardware, and can also be stored in the memory of the electronic device 170 in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

In one embodiment, an electronic device 170 is provided, and its internal structure may be as shown in FIG. 7 . The electronic device 170 includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Wherein, the processor of the electronic device 170 is used to provide calculation and control capabilities. The memory of the electronic device 170 includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device 170 is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, operator network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, the grid current monitoring method is realized.

Those skilled in the art can understand that the structure shown in FIG. 7 is only a block diagram of a partial structure related to the solution of the present invention, and does not constitute a limitation on the electronic device 170 to which the solution of the present invention is applied. The specific electronic device 170 may include more or fewer components than shown in FIG. 7, or combine certain components, or have a different arrangement of components. And, the structure of the collection terminal 120 in FIG. 1 may be as shown in FIG. 7 , that is, the electronic device 170 may be a collection terminal.

In one embodiment, the grid current monitoring device 130 provided by the present invention can be implemented in the form of a computer program, and the computer program can run on the electronic device 170 as shown in FIG. 7 . The memory of the electronic device 170 can store various program modules that make up the grid current monitoring device 130 , for example, the acquisition module 140 , the monitoring module 150 and the reporting module 160 shown in FIG. 6 . The computer program constituted by each program module enables the processor to execute the steps described in this specification and applied to the grid current monitoring method.

For example, the electronic device 170 shown in FIG. 7 may execute step S11 through the collection module 140 in the grid current monitoring device 130 shown in FIG. 6 . The electronic device 170 may execute step S13 through the monitoring module 150 . The electronic device 170 may execute step S15 through the reporting module 160 .

In one embodiment, an electronic device 170 is provided, including a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program: collect the power data of the area power grid in real time, and convert the power data to Stored in the array corresponding to the collection time point; when the interval time reaches the monitoring period, according to the electric energy data collected at the current moment and the array of the previous collection period at the current moment, it is judged whether the power grid in the area has a sudden change in current; The location of the sudden change of current of the power grid is the first mark, and the electric energy data collected at the current moment, the first mark, and the mark of the power grid of the area are put into the current sudden change signal, and the current sudden change signal is reported.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: real-time collection of electric energy data of an area power grid, and storing the electric energy data in the collection time In the array corresponding to the point; when the interval time reaches the monitoring cycle, according to the electric energy data collected at the current moment and the array of the previous collection cycle at the current moment, it is judged whether the current mutation of the area grid occurs; if so, the current mutation of the area grid is The position of the mark is the first mark, put the electric energy data collected at the current moment, the first mark, and the mark of the power grid in the area into the current mutation signal, and report the current sudden change signal.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions and possible implementations of devices, methods and computer program products according to multiple embodiments of the present invention. operate. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or action , or may be implemented by a combination of dedicated hardware and computer instructions.

In addition, each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A power grid current monitoring method is applied to a collection terminal, wherein the collection terminal is connected with a district power grid, and the method comprises the following steps:

collecting the electric energy data of the district power grid in real time, and storing the electric energy data into an array corresponding to a collection time point; wherein one of the arrays comprises all the electric energy data in one acquisition period;

when the interval time reaches a monitoring period, judging whether the district power grid generates current mutation or not according to the electric energy data acquired at the current moment and the array of the previous acquisition period at the current moment; wherein the monitoring period is a multiple of the acquisition period;

if so, setting the flag position of the current mutation of the district power grid as a first flag, putting the electric energy data collected at the current moment, the first flag and the flag of the district power grid into a current mutation signal, and reporting the current mutation signal.

2. The method for monitoring the grid current according to claim 1, wherein the electric energy data includes a current value and a voltage value, and the step of determining whether the grid of the segment has a current sudden change according to the electric energy data collected at the current moment and an array of a previous collection period at the current moment includes:

calculating an average voltage value of a previous acquisition period based on an array corresponding to the previous acquisition period at the current moment;

if the average voltage value reaches a normal voltage threshold value, judging whether the current value of the power grid of the parcel reaches a sudden change judgment condition or not based on all current values in the array of the previous acquisition period;

if the current value reaches a sudden change judgment condition, collecting a plurality of current values of the district power grid as an evaluation current group within a preset time length after the current moment, and judging whether the district power grid generates current sudden change according to the evaluation current group.

3. The grid current monitoring method according to claim 2, wherein the step of determining whether the current value of the parcel grid reaches a sudden change determination condition based on all current values in the array of the previous acquisition period comprises:

calculating the average current value of the previous acquisition period based on the array of the previous acquisition period;

taking the product of the average current value and a preset current upper limit threshold as a first current threshold, and taking the product of the average current value and a preset current lower limit threshold as a second current threshold;

and judging whether the current value of the district power grid is greater than the first current threshold value or less than the second current threshold value, if so, judging that the current value reaches a sudden change judgment condition.

4. The grid current monitoring method according to claim 3, wherein the step of determining whether the district power grid generates a current mutation according to the evaluation current group comprises:

comparing each of the evaluation current values to the first and second current thresholds, respectively;

and if any current value in the evaluation current values is larger than the first current threshold value or smaller than the second current threshold value, determining that the district power grid generates current mutation.

5. The grid current monitoring method according to claim 2, wherein the monitoring period is at least ten times the preset duration, and the collecting period is at least ten times the preset duration.

6. The grid current monitoring method according to claim 2, wherein the normal voltage threshold comprises a product of a rated voltage of the district power grid and a preset percentage.

7. The power grid current monitoring device is characterized by being applied to an acquisition terminal, wherein the acquisition terminal is connected with a piece area power grid, and the power grid current monitoring device comprises an acquisition module, a monitoring module and a reporting module;

the acquisition module is used for acquiring the electric energy data of the electric network of the parcel in real time and storing the electric energy data into an array corresponding to an acquisition time point; wherein one of the arrays comprises all the electric energy data in one acquisition period;

the monitoring module is used for judging whether the district power grid generates current mutation or not according to the electric energy data acquired at the current moment and the array of the previous acquisition period at the current moment when the interval time reaches the monitoring period; wherein the monitoring period is a multiple of the acquisition period;

the reporting module is configured to, when it is determined that the district power grid has a current sudden change, set a flag position of the district power grid where the current sudden change occurs as a first flag, put the electric energy data acquired at the present time, the first flag, and an identifier of the district power grid into a current sudden change signal, and report the current sudden change signal.

8. The power grid current monitoring system is characterized by comprising an acquisition terminal and a master station server which are in communication connection, wherein the acquisition terminal is connected with a district power grid;

the acquisition terminal is used for realizing the power grid current monitoring method as claimed in any one of claims 1 to 6;

and the master station server is used for receiving the current mutation signal reported by the acquisition terminal.

9. An electronic device, comprising a processor and a memory, the memory storing a computer program executable by the processor, the processor being operable to execute the computer program to implement the grid current monitoring method according to any one of claims 1 to 6.

10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements a grid current monitoring method according to any of claims 1 to 6.

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