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

Abstract

The embodiment of the present invention proposes a grid current monitoring method, device, system, electronic device and storage medium, which belongs to the field of data processing. The method applied to the collection terminal connected to the district power grid includes: real-time collection of electric energy data of the district power grid, and storing the electric energy data in an array corresponding to the collection time point. When the interval time reaches the monitoring period, based on 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 district power grid has a current mutation. If so, a current mutation signal is reported to realize timely monitoring of whether a current mutation occurs in the district power grid, and help reduce the probability of electrical equipment being damaged due to the current mutation.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and in particular to a method, device, system, electronic equipment and storage medium for monitoring power grid current. Background Art

[0002] With the rapid development of the power industry, power information collection terminals are widely used in power system monitoring and data collection. These terminals are primarily responsible for collecting power information from various collection points, managing data, transmitting data, and executing or forwarding control commands issued by the master station. For example, power collection terminals collect data from power meters in substations, enabling daily monitoring of residential electricity consumption and ultimately controlling the power supply situation in the substation.

[0003] The complex distribution of power networks is prone to many unexpected situations, such as sudden current fluctuations. However, it is currently impossible to monitor the instantaneous current fluctuations in power networks, i.e., sudden current fluctuations. This makes electrical equipment extremely vulnerable to damage due to excessive current fluctuations. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a grid current monitoring method, device, system, electronic device and storage medium, which can monitor in real time whether there is a sudden change in current in the area power grid, helping to reduce the probability of electrical equipment being damaged due to sudden current changes.

[0005] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows:

[0006] In a first aspect, an embodiment of the present invention provides a grid current monitoring method, which is applied to a data acquisition terminal connected to a regional power grid. The method includes:

[0007] Collecting the electric energy data of the area power grid in real time, and storing the electric energy data in an array corresponding to the collection time point; wherein one array includes all the electric energy data in one collection cycle;

[0008] When the interval time reaches the monitoring period, it is determined whether the power grid in the area has a sudden change in current based on the electric energy data collected at the current moment and the array of the previous collection period at the current moment; wherein the monitoring period is a multiple of the collection period;

[0009] If so, the flag position of the current mutation of the area power grid is set as the first flag, the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid are put into the current mutation signal, and the current mutation signal is reported.

[0010] Furthermore, the electric energy data includes current values ​​and voltage values. The step of determining whether a sudden change in current occurs in the area power grid based on the electric energy data collected at the current moment and an array of a previous collection cycle at the current moment includes:

[0011] Calculate the average voltage value of the previous acquisition period based on the array corresponding to the previous acquisition period at the current moment;

[0012] If the average voltage value reaches the normal voltage threshold, then judging whether the current value of the area power grid reaches the mutation judgment condition based on all current values ​​in the array of the previous acquisition cycle;

[0013] If the current value reaches the mutation judgment condition, multiple current values ​​of the area power grid are collected as an evaluation current group within a preset time after the current moment, and it is judged whether the area power grid has a current mutation based on the evaluation current group.

[0014] Furthermore, the step of judging whether the current value of the area power grid meets the mutation judgment condition based on all current values ​​in the array of the previous acquisition cycle includes:

[0015] Calculating an average current value of the previous acquisition period based on the array of the previous acquisition period;

[0016] The product of the average current value and a preset upper current threshold is used as a first current threshold, and the product of the average current value and a preset lower current threshold is used as a second current threshold;

[0017] Determine whether the current value of the area power grid is greater than the first current threshold or less than the second current threshold. If so, the current current value meets the mutation judgment condition.

[0018] Furthermore, the step of judging whether a sudden current change occurs in the area power grid according to the assessed current group includes:

[0019] comparing each of the evaluated current values ​​with the first current threshold and the second current threshold respectively;

[0020] If any of the evaluated current values ​​is greater than the first current threshold, or less than the second current threshold, it is determined that a sudden current change occurs in the area power grid.

[0021] Furthermore, the monitoring period is at least ten times the preset time length, and the collection period is at least ten times the preset time length.

[0022] Furthermore, the normal voltage threshold includes a product value of the rated voltage of the area power grid and a preset percentage.

[0023] In a second aspect, an embodiment of the present invention provides a power grid current monitoring device, which is applied to a collection terminal connected to a regional power grid. The power grid current monitoring device includes a collection module, a monitoring module, and a reporting module.

[0024] The acquisition module is used to collect the electric energy data of the area power grid in real time and store the electric energy data in an array corresponding to the acquisition time point; wherein one array includes all the electric energy data in one acquisition cycle;

[0025] The monitoring module is configured to determine whether a sudden change in current occurs in the area power grid based on 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;

[0026] The reporting module is used to determine that when a current mutation occurs in the area power grid, set the flag position where the current mutation occurs in the area power grid as the first flag, put the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid into the current mutation signal, and report the current mutation signal.

[0027] In a third aspect, an embodiment of the present invention provides a power grid current monitoring system, comprising a communication-connected acquisition terminal and a master station server, wherein the acquisition terminal is connected to a regional power grid;

[0028] The acquisition terminal is used to implement the grid current monitoring method as described in the first aspect;

[0029] The master station server is used to receive the current mutation signal reported by the acquisition terminal.

[0030] In a fourth aspect, an embodiment of the present invention provides an electronic device, comprising a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and the processor can execute the computer program to implement the grid current monitoring method as described in the first aspect.

[0031] In a fifth aspect, an embodiment of the present invention provides a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the grid current monitoring method as described in the first aspect.

[0032] The grid current monitoring method, device, system, electronic device and storage medium provided by the embodiments of the present invention, the collection terminal collects the electric energy data of the area grid in real time and stores it in the array of the collection period corresponding to the collection time. Whenever the interval time reaches the monitoring period, the collection terminal determines whether the area grid has a current mutation based on the electric energy data at the current moment and the array of the previous collection period at the current time. If so, the flag position of the area grid is set to the first flag, and the current mutation signal is reported to enable maintenance personnel to promptly know the current mutation of the area grid, thereby enabling timely monitoring of whether a current mutation occurs in the area grid, and helping to reduce the probability of electrical equipment being damaged due to current mutation.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 The figure shows a schematic structural diagram of a power grid current monitoring system provided by an embodiment of the present invention.

[0036] Figure 2 The figure shows a flow chart of a method for monitoring power grid current provided by an embodiment of the present invention.

[0037] Figure 3 Shown Figure 1 Flow chart of some sub-steps of step S13.

[0038] Figure 4 Shown Figure 3 Flow chart of some sub-steps of step S132.

[0039] Figure 5 Shown Figure 3 Flow chart of some sub-steps of step S133.

[0040] Figure 6 A block diagram of a power grid current monitoring device provided by an embodiment of the present invention is shown.

[0041] Figure 7 A block diagram of an electronic device provided by an embodiment of the present invention is shown.

[0042] Reference numerals: 100 - grid current monitoring system; 110 - master station server; 120 - acquisition terminal; 130 - grid current monitoring device; 140 - acquisition module; 150 - monitoring module; 160 - reporting module; 170 - electronic equipment. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0045] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of 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 the element.

[0046] Power information collection terminals are widely used in power system monitoring and data collection. They are responsible for collecting, managing, and transmitting power information from various collection points, as well as executing or forwarding control commands issued by the master station. For example, power collection terminals collect data from utility meters, enabling daily monitoring of residential electricity consumption and ultimately controlling the power supply situation in the utility area.

[0047] The complex distribution of power grids creates numerous unexpected situations, such as sudden current fluctuations. However, current monitoring of these transient fluctuations in the grid is currently impossible. These current fluctuations can easily damage electrical equipment and pose serious safety risks.

[0048] Based on the above considerations, an embodiment of the present invention provides a power grid current monitoring solution, which can realize real-time monitoring of whether there is a sudden change in current in the area power grid, and at the same time help reduce the probability of electrical equipment being damaged due to sudden current changes, thereby reducing the power safety risk of the power grid.

[0049] In one embodiment, reference Figure 1 A power grid current monitoring system 100 is provided. The power grid current monitoring system 100 includes a master server 110 and multiple data acquisition terminals 120. Each data acquisition terminal 120 can be connected to the master server 110 via a network, wired, or wireless communication. Each data acquisition terminal 120 is connected to a specific regional power grid.

[0050] The collection terminal 120 is used to collect the power data of the local power grid in real time and store the power data in an array corresponding to the collection time point. One array includes all the power data in one collection cycle.

[0051] The acquisition terminal 120 is also used to determine whether the area power grid has a current mutation based on the electric energy data collected at the current moment and the array of the previous acquisition cycle at the current moment when the interval time reaches the monitoring period. If so, the flag position of the current mutation of the area power grid is set to the first flag, and the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid are put into the current mutation signal, and the current mutation signal is reported.

[0052] The master server 110 is used to receive a sudden current change signal reported by any acquisition terminal 120 and remind the operation and maintenance personnel to maintain the power grid in the area where the acquisition terminal 120 is located.

[0053] It should be noted that the monitoring period is a multiple of the collection period. For example, if the collection period is 1 second, then each array stores the corresponding power data collected within 1 second. The monitoring period can be 1 second, 2 seconds, 3 seconds, etc.

[0054] Through the above-mentioned grid current monitoring system 100, it is possible to timely monitor whether the area grid has a sudden change in current, and remind the operation and maintenance personnel to deal with the area grid in a timely manner after a sudden change in current occurs, thereby helping to reduce the power safety risks of users of the area grid.

[0055] In one embodiment, reference Figure 2 , provides a grid current monitoring method. In this embodiment, the grid current monitoring method is applied to Figure 1 Taking the collection terminal 120 in S11 as an example, the electric energy data of the area power grid is collected in real time, and the electric energy data is stored in an array corresponding to the collection time point.

[0056] Each array corresponds to a collection period, and one array includes all the electric energy data in one collection period.

[0057] S13, when the interval time reaches the monitoring period, it is determined whether the area power grid has a sudden change in current based on the electric energy data collected at the current moment and the array of the previous collection period at the current moment.

[0058] The monitoring period must be greater than or equal to the collection period, and the monitoring period must be a multiple of the collection period.

[0059] S15, if yes, then set the flag position of the current mutation of the area power grid as the first flag, put the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid into the current mutation signal, and report the current mutation signal.

[0060] It should be noted that the flag bit refers to the flag bit of the current mutation, which can be "0" and "1" ("0" can be the second flag, indicating that there is no current mutation, and "1" can be the first flag, indicating that there is a current mutation). The identifier of the area power grid is used to refer to the area power grid. Different area power grids have different identifiers (for example, area power grid A, area power grid B, area power grid C and area power grid D, etc.), so that the main station server and operation and maintenance personnel can distinguish different area power grids according to the identifiers.

[0061] Exemplarily, the acquisition terminal is connected to the area power grid A, and the acquisition period is set to T, the monitoring period is 2T, and each acquisition period corresponds to an array, which is used to store the electric energy data collected by the acquisition terminal during the acquisition period corresponding to the array. The acquisition terminal collects the electric energy data (including but not limited to current values ​​and voltage values) of the area power grid A in real time, and stores the electric energy data in the corresponding array according to the acquisition time of the electric energy data. At the same time, the acquisition terminal performs monitoring once every 2T: every time the time interval from the last monitoring time point (which can be time t) reaches 2T, based on the electric energy data collected at the current time (time t+2T) and the array corresponding to time t+T to time t+2T, it is judged whether a current mutation occurs during this period.

[0062] If it is determined that a current mutation occurs, the flag position of the current mutation of the area power grid A is set to the first flag (the first flag can be "1", and the second flag opposite to the first flag can be "0"), and the current mutation signal is reported to the main station server based on the electric energy data collected at the current moment.

[0063] When the master server is an operation and maintenance server, it can promptly notify the operation and maintenance personnel to perform maintenance on the area power grid A. Alternatively, the master server can send operation and maintenance information to the operation and maintenance personnel's operation and maintenance terminal to remind them to perform maintenance on the area power grid A. Alternatively, the master server can perform maintenance on the area power grid A, and so on. In this embodiment, the subsequent processing tasks of the master server are not strictly limited.

[0064] In the above-mentioned grid current monitoring method, by collecting the electric energy data of the area grid in real time and monitoring the sudden change of current at intervals, it is possible to timely monitor whether there is a sudden change of current in the area grid, and report it in time when a sudden change of current occurs, thereby helping to reduce the probability of electrical equipment being damaged due to sudden change of current.

[0065] In order to reduce the amount of calculation in the current mutation monitoring process, thereby reducing the calculation cost and ensuring the accuracy of the current mutation monitoring results, in one embodiment, a normal voltage threshold and mutation judgment conditions are introduced in the current mutation monitoring. Figure 3 The above step S13 may include the following sub-steps, and the following sub-steps are used to determine whether the area power grid has a sudden change in current.

[0066] S131 , calculating an average voltage value of a previous acquisition period based on an array corresponding to a previous acquisition period at a current moment.

[0067] S132: If the average voltage value reaches the normal voltage threshold, then based on all current values ​​in the array of the previous acquisition cycle, determine whether the current current value of the area power grid meets the mutation determination condition.

[0068] The normal voltage threshold can be set flexibly. For example, it can be an empirical value or calculated according to certain rules. In one embodiment, the normal voltage threshold can include the product of the rated voltage of the area power grid and a preset percentage. The preset percentage can be 60%, that is, normal voltage threshold = rated voltage * 60%, or other percentages.

[0069] S133, if the current value reaches the mutation judgment condition, then within a preset time period after the current moment, multiple current values ​​of the area power grid are collected as an evaluation current group, and it is determined whether the area power grid has a current mutation based on the evaluation current group.

[0070] For example, at each monitoring cycle, the average voltage of the previous acquisition cycle is calculated. If the array for the previous acquisition cycle includes six voltage values, the average of these six voltage values ​​is taken as the average voltage value. If the average voltage value does not reach the normal voltage threshold, it indicates that the power (voltage) in the previous acquisition cycle was abnormal, and monitoring whether there is a sudden change in current is meaningless. Therefore, in this case, the current sudden change determination is abandoned.

[0071] If the average voltage reaches the normal voltage threshold, the power grid in the area is normal. The current value in the array from the previous acquisition cycle is then used to determine whether the current value at the current moment meets the mutation judgment condition. If the mutation judgment condition is met, a current mutation judgment is performed: multiple current values ​​within a preset time period after the current moment are used to determine whether the grid has experienced a current mutation. If the current value at the current moment does not meet the mutation judgment condition, there is no need to further determine the current value within the preset time period after the current moment.

[0072] Through the above steps S131-S132, before performing the current mutation judgment calculation, two conditions are set: reaching the normal voltage threshold and reaching the mutation judgment condition. There is no need to calculate all the data each time, which can reduce the amount of calculation, reduce the calculation cost, and improve the accuracy of the current mutation judgment.

[0073] Furthermore, in one embodiment, in order to improve the accuracy of current mutation determination, a current upper limit threshold and a current lower limit threshold are introduced into the mutation determination condition. Figure 4 The above step S132 may include the following sub-steps to determine whether the current value of the area power grid meets the mutation judgment condition based on all current values ​​in the array of the previous acquisition cycle.

[0074] S1321 , based on the array of the previous acquisition cycle, calculate the average current value of the previous acquisition cycle.

[0075] S1322: The product of the average current value and the preset upper current threshold is used as the first current threshold, and the product of the average current value and the preset lower current threshold is used as the second current threshold.

[0076] Among them, the preset current upper limit threshold and current lower limit threshold can be values ​​calculated based on the electric energy characteristics of the area power grid when it is operating normally. It should be understood that this method is not the only feasible method to calculate the current upper limit threshold and current lower limit threshold. In this embodiment, no unique limitation is made.

[0077] S1323, determine whether the current value of the area power grid is greater than the first current threshold, or less than the second current threshold. If so, the current current value meets the mutation judgment condition.

[0078] 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 cycle and the preset current upper limit threshold), or the current current value is less than the second current threshold (the product of the average current value of the previous acquisition cycle and the preset current lower limit threshold), the current current value produces a preliminary mutation compared with the previous cycle, and the mutation judgment condition is met.

[0079] Under normal circumstances, current mutation is not temporary. Therefore, after the current value reaches the mutation judgment condition, in order to eliminate the influence of non-current mutation on the judgment result, a preset time is set, and the current situation within the preset time after the current moment is used to judge whether a current mutation occurs. That is, it can only be judged that a current mutation occurs after the duration reaches a certain time. On the basis of the above, refer to Figure 5 , the above step S133 can determine whether a current mutation occurs through the following steps.

[0080] S1331 , comparing each current value in the evaluated current value with a first current threshold and a second current threshold respectively.

[0081] S1332: If any of the evaluated current values ​​is greater than the first current threshold or less than the second current threshold, it is determined that a sudden current change occurs in the area power grid.

[0082] Through the above steps S1331-S1332, when any current value within the preset time length is greater than the first current threshold, or less than the second current threshold, that is, when any current value within the preset time length is not within the normal current range (not within the range formed by the first current threshold and the second current threshold), it is determined that a current mutation occurs in the area power grid.

[0083] Through the above steps S131 to S133 and the sub-steps of each step, it is achieved that when the current value is not within the normal current range and the duration reaches a preset time, it is determined that a current mutation occurs in the area power grid.

[0084] It should be noted that, in order to reduce the impact of the small gap between the collection period, monitoring period, and the preset duration and improve determination accuracy, in the embodiment of the present invention, the monitoring period is at least ten times the preset duration, and the collection period is at least ten times the preset duration. For example, if the preset duration is 6 seconds, the collection period is at least 1 minute, and the monitoring period is also at least 1 minute.

[0085] Through the above settings, the reference value of the average current value, the first current threshold value and the second current threshold value to the current value and the current value within the preset time period is improved, thereby helping to improve the accuracy of the determination.

[0086] 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 threshold can be modified according to different usage scenarios and different usage requirements to improve the applicability of the scenario.

[0087] The grid current monitoring method provided by the embodiment of the present invention can collect electric energy data of the regional power grid in real time during the operation of the collection terminal, and perform current mutation processing and analysis based on the collected electric energy data. If it is determined that the current has a mutation, the collection terminal generates current mutation information and reports the current mutation information to the main station server of the power management main station system via a wireless public network or Ethernet, so that power supply bureau personnel can monitor abnormalities in real time and dispatch on-site maintenance personnel to handle them in a timely manner, thereby maintaining the stability of the power grid and reducing power safety risks.

[0088] Based on the concept of the above-mentioned grid current monitoring method, in one embodiment, a grid current monitoring device 130 is provided, which can be applied to Figure 1 The collection terminal 120 in Figure 6 The grid current monitoring device 130 includes a collection module 140 , a monitoring module 150 and a reporting module 160 .

[0089] The acquisition module 140 is used to acquire the power data of the regional power grid in real time and store the power data in an array corresponding to the acquisition time point. One array includes all the power data in one acquisition cycle.

[0090] The monitoring module 150 is configured to determine whether a sudden change in current has occurred in the area power grid based on the currently collected power data and the array of the previous collection period when the interval reaches the monitoring period. The monitoring period is a multiple of the collection period.

[0091] The reporting module 160 is used to determine that when a current mutation occurs in the area power grid, set the flag position where the current mutation occurs in the area power grid as the first flag, put the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid into the current mutation signal, and report the current mutation signal.

[0092] In the above-mentioned grid current monitoring device 130, through the coordinated action of the acquisition module 140, the monitoring module 150 and the reporting module 160, it is possible to timely monitor whether there is a sudden change in current in the area power grid, and help reduce the probability of electrical equipment being damaged due to sudden current changes.

[0093] For specific definitions of the grid current monitoring device 130, please refer to the definitions of the grid current monitoring method above and will not be repeated here. Each module in the aforementioned grid current monitoring device 130 may be implemented in whole or in part via software, hardware, or a combination thereof. Each of these modules may be embedded in or independent of the processor in the electronic device 170 in hardware form, or may be stored in the memory of the electronic device 170 in software form, so that the processor can call and execute the corresponding operations of each module.

[0094] In one embodiment, an electronic device 170 is provided, whose internal structure diagram can be as follows: Figure 7 As shown. The electronic device 170 includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. Among them, the processor of the electronic device 170 is used to provide computing 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 a computer program. The internal memory provides an environment for the operation of the operating system and computer program 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 implemented through WIFI, an operator network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, the grid current monitoring method is implemented.

[0095] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the 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 Figure 7 More or fewer components may be shown, or some components may be combined, or a different arrangement of components may be provided. Figure 1 The structure of the collection terminal 120 in the embodiment can be as follows: Figure 7 As shown, the electronic device 170 can be a collection terminal.

[0096] In one embodiment, the grid current monitoring device 130 provided by the present invention can be implemented in the form of a computer program. The computer program can be used in Figure 7 The electronic device 170 shown in FIG. 1 is shown. The memory of the electronic device 170 may store various program modules constituting the grid current monitoring device 130, such as: Figure 6 The collecting module 140, monitoring module 150 and reporting module 160 are shown. The computer program composed of various program modules enables the processor to execute the steps of the grid current monitoring method described in this specification.

[0097] For example, Figure 7 The electronic device 170 shown may be Figure 6 The collecting module 140 in the grid current monitoring device 130 shown executes step S11. 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.

[0098] In one embodiment, an electronic device 170 is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program: real-time collection of electric energy data of the area power grid, and storing the electric energy data in an array corresponding to the collection time point; when the interval time reaches the monitoring period, judging whether the area power grid has a current mutation based on the electric energy data collected at the current moment and the array of the previous collection period at the current moment; if so, setting the flag position of the current mutation of the area power grid to the first flag, putting the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid into the current mutation signal, and reporting the current mutation signal.

[0099] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: real-time collection of electric energy data of a district power grid and storage of the electric energy data in an array corresponding to a collection time point; when the interval time reaches a monitoring period, judging whether a current mutation occurs in the district power grid based on the electric energy data collected at the current moment and the array of a previous collection period at the current moment; if so, setting the flag position of the current mutation of the district power grid to the first flag, placing the electric energy data collected at the current moment, the first flag, and the identifier of the district power grid into a current mutation signal, and reporting the current mutation signal.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a portion of code, and the module, program segment or a portion of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0101] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0102] 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 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0103] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for monitoring power grid current, characterized in that: Applied to a data collection terminal connected to a regional power grid, the method includes: Collecting the electric energy data of the area power grid in real time, and storing the electric energy data in an array corresponding to the collection time point; wherein one array includes all the electric energy data in one collection cycle; When the interval time reaches the monitoring period, it is determined whether the power grid in the area has a sudden change in current based on the electric energy data collected at the current moment and the array of the previous collection period at the current moment; wherein the monitoring period is a multiple of the collection period; If so, the flag position of the current mutation of the area power grid is set as the first flag, the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid are added to the current mutation signal, and the current mutation signal is reported; The electric energy data includes current values ​​and voltage values. The step of determining whether a sudden current change occurs in the area power grid based on the electric energy data collected at the current moment and an array of a 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 judging whether the current value of the area power grid reaches the mutation judgment condition based on all current values ​​in the array of the previous acquisition cycle; If the current value reaches the mutation judgment condition, multiple current values ​​of the area power grid are collected as an evaluation current group within a preset time after the current moment, and it is judged whether the area power grid has a current mutation based on the evaluation current group.

2. The grid current monitoring method according to claim 1, characterized in that: The step of judging whether the current value of the area power grid meets the mutation judgment condition based on all current values ​​in the array of the previous acquisition cycle includes: Calculating an average current value of the previous acquisition period based on the array of the previous acquisition period; The product of the average current value and a preset upper current threshold is used as a first current threshold, and the product of the average current value and a preset lower current threshold is used as a second current threshold; Determine whether the current value of the area power grid is greater than the first current threshold or less than the second current threshold. If so, the current current value meets the mutation judgment condition.

3. The grid current monitoring method according to claim 2, characterized in that: The step of judging whether a sudden current change occurs in the area power grid according to the assessed current group includes: comparing each current value in the evaluation current group with the first current threshold and the second current threshold respectively; If any current value in the evaluated current group is greater than the first current threshold, or less than the second current threshold, it is determined that a sudden current change occurs in the area power grid.

4. The grid current monitoring method according to claim 1, characterized in that: The monitoring period is at least ten times the preset time length, and the collection period is at least ten times the preset time length.

5. The grid current monitoring method according to claim 1, characterized in that: The normal voltage threshold includes a product value of the rated voltage of the area power grid and a preset percentage.

6. A power grid current monitoring device, characterized in that: The grid current monitoring device is applied to a collection terminal, the collection terminal is connected to the area power grid, and the grid current monitoring device includes a collection module, a monitoring module and a reporting module to implement the grid current monitoring method according to any one of claims 1 to 5; The acquisition module is used to collect the electric energy data of the area power grid in real time and store the electric energy data in an array corresponding to the acquisition time point; wherein one array includes all the electric energy data in one acquisition cycle; The monitoring module is configured to determine whether a sudden change in current occurs in the area power grid based on 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 current mutation occurs in the area power grid, set the flag position where the current mutation occurs in the area power grid as the first flag, put the electric energy data collected at the current moment, the first flag, and the identifier of the area power grid into the current mutation signal, and report the current mutation signal.

7. A power grid current monitoring system, characterized in that: It includes a communication-connected acquisition terminal and a master station server, wherein the acquisition terminal is connected to the area power grid; The acquisition terminal is used to implement the grid current monitoring method according to any one of claims 1 to 5; The master station server is used to receive the current mutation signal reported by the acquisition terminal.

8. An electronic device, characterized in that: The system comprises a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and the processor can execute the computer program to implement the grid current monitoring method according to any one of claims 1 to 5.

9. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the grid current monitoring method according to any one of claims 1 to 5 is implemented.

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