Synchronous control and abnormal response optimization system of current protection device

Abstract

The invention provides a synchronous control and abnormal response optimization system for a current protection device, and relates to the technical field of current protection, and the system comprises a protection device obtaining module which is used for obtaining a central decision center and a plurality of distributed current protection devices; the local anomaly analysis module is used for generating multiple pieces of anomaly decision response information; the synchronism identification module is used for carrying out multi-terminal communication test verification; the auxiliary transmission module is used for obtaining an updated data transmission result; and the global collaborative optimization module is used for performing global collaborative protection decision optimization. According to the method and the device, the technical problems of poor current protection effect and potential safety hazards in power grid operation caused by lack of analysis on the overall state of the plurality of current protection devices and the power grid in the prior art can be solved, centralized monitoring and cooperative control on the plurality of distributed current protection devices in the target power distribution network are realized, and the power grid operation efficiency is improved. The technical effects of ensuring stable and safe operation of the power distribution network and improving the current protection control accuracy are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current protection, in particular to a synchronous control and abnormal response optimization system of a current protection device. BACKGROUND

[0002] In a modern power system, a current protection device is a key component to ensure the safe and stable operation of the power grid. A power distribution network usually contains multiple current protection devices. In the traditional technology, multiple current protection devices independently operate and control, and take protective actions when detecting current abnormalities. However, the current protection device will affect the overall state of the power grid after taking protective actions, thereby affecting the overall stability of the power grid.

[0003] However, the prior art lacks analysis of multiple current protection devices and the overall state of the power grid, resulting in independent protection control, which leads to poor current protection effect and potential safety hazards in power grid operation. SUMMARY

[0004] The purpose of the present application is to provide a synchronous control and abnormal response optimization system of a current protection device to solve the technical problem in the prior art that independent protection control is performed due to the lack of analysis of multiple current protection devices and the overall state of the power grid, which leads to poor current protection effect and potential safety hazards in power grid operation.

[0005] In view of the above problems, the present application provides a synchronous control and abnormal response optimization system of a current protection device, which comprises: a protection device acquisition module for acquiring a central decision center and multiple distributed current protection devices of a target power distribution network; a local abnormality analysis module for local abnormality identification and abnormality processing through a current monitoring module and a preset protection logic in the multiple distributed current protection devices, generating multiple abnormal decision response information and transmitting to the central decision center; a synchronism identification module for communication synchronism identification in the central decision center, acquiring a first identification device of synchronism abnormality and performing a multi-end communication test verification; an auxiliary transmission module for establishing a first auxiliary relay communication node according to the multi-end communication test verification result, assisting in transmitting the abnormal decision response information of the first identification device to obtain an updated data transmission result; a global cooperative optimization module for global cooperative protection decision optimization in the central decision center according to the updated data transmission result, generating multiple distributed protection decisions for current protection control.

[0006] One or more technical solutions provided in the present application have at least the following technical effects or advantages: The protection device acquisition module is configured to acquire a central decision center and a plurality of distributed current protection devices of a target power distribution network; the local anomaly analysis module is configured to perform local anomaly identification and anomaly processing through a current monitoring module and a preset protection logic in the plurality of distributed current protection devices, generate a plurality of anomaly decision response information, and transmit the plurality of anomaly decision response information to the central decision center; the synchronism identification module is configured to perform communication synchronism identification at the central decision center, acquire a first identification device of synchronism anomaly, and perform multi-terminal communication test verification; the auxiliary transmission module is configured to establish a first auxiliary relay communication node according to a multi-terminal communication test verification result, perform auxiliary transmission on the anomaly decision response information of the first identification device, and obtain an update data transmission result; and the global cooperative optimization module is configured to perform global cooperative protection decision optimization at the central decision center according to the update data transmission result, and generate a plurality of distributed protection decisions for current protection control. After local anomaly processing is performed through the plurality of distributed current protection devices, the anomaly decision response information is transmitted to the central decision center for global cooperative protection decision optimization, centralized monitoring and cooperative control of the plurality of distributed current protection devices in the target power distribution network are implemented, the stable and safe operation of the power distribution network is ensured, and the technical effect of improving the current protection control accuracy is achieved.

[0007] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, the present application can be implemented according to the content of the specification, and in order to enable the above and other purposes, features and advantages of the present application to be more obvious and easy to understand, the following specific embodiments of the present application are described. It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0009] Figure 1 Flowchart of the synchronization control and anomaly response optimization system of the current protection device of the present application; Figure 2 Flowchart of generating a plurality of distributed protection decisions in the synchronization control and anomaly response optimization system of the current protection device of the present application.

[0010] The reference signs are explained as follows: a protection device acquisition module 11, a local anomaly analysis module 12, a synchronism identification module 13, an auxiliary transmission module 14, and a global collaborative optimization module 15. DETAILED DESCRIPTION

[0011] The present application provides a synchronous control and abnormal response optimization system for a current protection device, which solves the technical problem in the prior art that the current protection effect is poor and the power grid operation has a safety hazard due to the lack of analysis of the overall state of multiple current protection devices and the power grid for independent protection control. After local abnormal processing by multiple distributed current protection devices, abnormal decision response information is sent to a central decision center for global collaborative protection decision optimization, realizing centralized monitoring and collaborative control of multiple distributed current protection devices in a target power distribution network, achieving the technical effects of ensuring stable and safe operation of the power distribution network and improving the accuracy of current protection control.

[0012] The technical solutions in the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. In addition, it should be noted that, for convenience of description, only parts related to the present application are shown in the drawings.

[0013] Please refer to the drawings Figure 1 The present application provides a synchronous control and abnormal response optimization system for a current protection device, which solves the technical problem in the prior art that the current protection effect is poor and the power grid operation has a safety hazard due to the lack of analysis of the overall state of multiple current protection devices and the power grid for independent protection control. After local abnormal processing by multiple distributed current protection devices, abnormal decision response information is sent to a central decision center for global collaborative protection decision optimization, realizing centralized monitoring and collaborative control of multiple distributed current protection devices in a target power distribution network, achieving the technical effects of ensuring stable and safe operation of the power distribution network and improving the accuracy of current protection control. The protection device acquisition module 11 is configured to acquire a central decision center and multiple distributed current protection devices of a target power distribution network.

[0014] Specifically, the target power distribution network refers to any type of power distribution network, and multiple distributed current protection devices are generally installed in the target power distribution network. The central decision center of the target power distribution network is a centralized control center responsible for monitoring and managing all distributed current protection devices of the entire power distribution network, capable of analyzing the running state of the power distribution network in real time and making decisions according to the analysis results to ensure stable and safe operation of the power grid.

[0015] The plurality of distributed current protection devices are distributed on each key node of the target power distribution network. The core function of the plurality of distributed current protection devices is to monitor the current state and, when detecting abnormal current, to quickly determine the preliminary abnormal handling strategy according to the preset protection logic, such as cutting off the circuit, to prevent the fault from expanding. The plurality of distributed current protection devices include a current monitoring module and a preset protection logic. The current monitoring module is the key part of the distributed current protection device, which can accurately measure the size and change of the current in real time, and provide data support for the preset protection logic. The preset protection logic is a series of rules and algorithms set in advance, which is used to guide the current protection device to take action under what circumstances, and is usually based on in-depth analysis of the operating characteristics of the power grid and long-term experience summary, aiming to maximize the protection of the power grid from damage, while ensuring the continuity and reliability of power supply. The specific protection principle of the protection device needs to be determined.

[0016] The local anomaly analysis module 12 is used for local anomaly identification and abnormal handling through the current monitoring module and the preset protection logic in the plurality of distributed current protection devices, and generates a plurality of abnormal decision response information and transmits it to the central decision center.

[0017] Specifically, the current is monitored by the current monitoring module and input to the preset protection logic for analysis. When detecting abnormal current, such as current meeting any one of the current threshold of the preset protection logic, such as cutting off the circuit, abnormal decision response information is generated, including abnormal current and protection action generated by the preset protection logic. Thus, a plurality of abnormal decision response information corresponding to the plurality of distributed current protection devices is obtained.

[0018] Finally, the plurality of abnormal decision response information is transmitted to the central decision center through the preset communication channel. The preset communication channel is a wireless communication channel, such as a wireless communication protocol, which ensures that the abnormal decision response information can be timely and accurately transmitted to the central decision center, so that the central decision center can respond in time and take necessary measures to protect the safe operation of the circuit and equipment.

[0019] The synchronization identification module 13 is used for communication synchronization identification in the central decision center, acquires the first identification device of synchronization anomaly and performs multi-terminal communication test verification.

[0020] Specifically, the multiple abnormal decision response information is transmitted to the central decision center through the preset communication channel. After receiving the data transmission result, the central decision center also needs to identify the communication synchronization. This is because the data transmission may be affected by various factors, such as network delay, signal interference, etc., which may cause problems in the synchronization of data transmission. The communication synchronization identification is a process of detecting these problems, helping the central decision center to determine whether the data transmission is timely and accurate. If the central decision center identifies synchronization abnormalities, the distributed current protection device that obtains the synchronization abnormalities is marked as the first identification device.

[0021] Next, the central decision center will perform a multi-terminal communication test on the first identification device, that is, the distributed current protection device not only can communicate with the central decision center, but also can communicate with other distributed current protection devices. The communication test on the first identification device and other distributed current protection devices is performed to obtain test data, such as data transmission rate and transmission delay, as the multi-terminal communication test result. It should be noted that the multi-terminal communication test result includes the test result corresponding to the first identification device and other distributed current protection devices respectively.

[0022] The auxiliary transmission module 14 is configured to establish a first auxiliary relay communication node according to the multi-terminal communication test result, and perform auxiliary transmission on the abnormal decision response information of the first identification device to obtain an updated data transmission result.

[0023] Specifically, according to the multi-terminal communication test result, the central decision center analyzes and establishes the first auxiliary relay communication node. The first auxiliary relay communication node is one of the other distributed current protection devices, that is, the communication between the first identification device and the central decision center is abnormal, but the first identification device can still communicate with other distributed current protection devices. Therefore, based on the multi-terminal communication test result, the distributed current protection device with the best communication quality between the first identification device, i.e., low delay, fast data transmission rate, and small signal loss, is obtained as the first auxiliary relay communication node.

[0024] After establishing the first auxiliary relay communication node, the abnormal decision response information of the first identification device is transmitted. That is, the data originally transmitted directly from the first identification device to the central decision center will now be transmitted to the first auxiliary relay communication node first, and then transmitted to the central decision center by the first auxiliary relay communication node. In this way, even if the original communication path is problematic, the data can be successfully transmitted through the auxiliary relay communication node, thereby improving the reliability and stability of data transmission. The updated data transmission result obtained contains the multiple abnormal decision response information received.

[0025] The global cooperative optimization module 15 is configured to perform global cooperative protection decision optimization according to the update data transmission result, and generate a plurality of distributed protection decisions for current protection control.

[0026] Specifically, the central decision center performs global cooperative protection decision optimization after receiving the update data transmission result. In brief, the global state of the power grid is predicted according to the plurality of abnormal decision response information in the update data transmission result, and the plurality of abnormal decision response information is optimized and adjusted according to the prediction result, so that the global state of the power grid meets the preset requirement, and the plurality of distributed protection decisions is generated.

[0027] After the plurality of distributed protection decisions is generated, the central decision center returns the decisions to the plurality of distributed current protection devices, and the plurality of distributed current protection devices performs protection control according to the plurality of distributed protection decisions, such as executing the protection decisions issued by the central decision center to cut off the fault circuit when detecting current abnormality, to prevent further damage. The centralized monitoring and cooperative management of the plurality of distributed current protection devices in the target distribution network is realized, the stable and safe operation of the distribution network is ensured, and the current protection control accuracy is improved.

[0028] Further, the local abnormality analysis module 12 in the system is further configured to: extract a first distributed current protection device, and a corresponding first current monitoring module and first preset protection logic according to the plurality of distributed current protection devices; collect first current monitoring data based on the first current monitoring module, and combine the first preset protection logic to perform protection action matching, to generate first abnormal decision response information; and add the first abnormal decision response information into the plurality of abnormal decision response information.

[0029] Specifically, any one of the plurality of distributed current protection devices is extracted, denoted as a first distributed current protection device, and the current monitoring module and the preset protection logic contained in the first distributed current protection device are denoted as a first current monitoring module and a first preset protection logic, respectively. The first current monitoring module is a current monitoring device installed in the first distributed current protection device, and is configured to collect current data in the circuit in real time. The first preset protection logic is a protection strategy built in the first distributed current protection device, and is configured to determine whether to perform a protection action and which protection action to perform according to the current monitoring data.

[0030] Based on the first current monitoring data collected by the first current monitoring module, the first distributed current protection device will match the protection action according to the first preset protection logic. In simple terms, according to the current value in the first current monitoring data and the first preset protection logic, it is judged whether an abnormal situation that needs protection occurs, such as overload, short circuit, etc. If an abnormality is detected, the first distributed current protection device will generate a first abnormal decision response information, including an abnormal current, and a protection action generated by the preset protection logic.

[0031] The first abnormal decision response information is added to the plurality of abnormal decision response information. The plurality of abnormal decision response information will eventually be transmitted to the central decision center for global collaborative protection decision optimization. In this way, the central decision center can obtain abnormal information from each distributed current protection device, so as to more comprehensively understand the state of the power system and make more accurate protection decisions, thereby improving the current protection efficiency and response speed.

[0032] Further, the synchronization identification module 13 in the system is also used for: Based on the data transmission result, the plurality of distributed current protection devices are analyzed, and a communication interruption device is output; based on the data transmission result, data transmission stability identification is performed, and a communication fluctuation abnormal device is output; the communication interruption device and the communication fluctuation abnormal device are used to generate the first identification device.

[0033] Specifically, based on the data transmission result, the plurality of distributed current protection devices are analyzed, which aims to determine which devices have communication blind spots or interruptions, and check the correspondence between the data in the data transmission result and the plurality of distributed current protection devices. Ideally, the data transmission result should correspond to the plurality of abnormal decision response information of the plurality of distributed current protection devices. The central decision center does not know the real data in the plurality of abnormal decision response information, and cannot judge whether the data transmission result is consistent with it. However, the plurality of abnormal decision response information corresponds to the plurality of distributed current protection devices. If the data transmission result does not contain the data corresponding to any distributed current protection device, this distributed current protection device is regarded as a communication interruption device, that is, this distributed current protection device does not transmit data to the central decision center.

[0034] Next, based on the data transmission result, data transmission stability identification is performed, aiming to determine which devices have fluctuations or abnormalities in the data transmission process. Specifically, based on the existing technology, the delay, packet loss rate, and other factors of data transmission can be analyzed according to the data transmission result. If the data transmission of a certain device shows delay or packet loss, or the quality of data transmission is significantly lower than that of other devices, it is identified as a communication fluctuation abnormal device. These devices may not be able to communicate stably due to network congestion, signal interference, equipment performance problems, etc.

[0035] Finally, the communication interruption devices and communication fluctuation abnormal devices are labeled to generate the first identified device. Auxiliary relay communication nodes are established to ensure the stability and reliability of data transmission, thereby improving the efficiency and response speed of current protection.

[0036] Further, the synchronization identification module 13 in the system is also used for: obtaining the communication network topology structure of the plurality of distributed current protection devices; based on the communication network topology structure, obtaining a candidate relay device set having a communication channel with the first identified device; performing a communication quality test on the candidate relay device set and the first identified device, and obtaining a multi-end communication test verification result.

[0037] Specifically, the distributed current protection devices communicate with each other through the pre-constructed communication channel, thereby obtaining the communication relationship between the plurality of distributed current protection devices, constructing the communication network topology structure, i.e., forming the communication network topology structure of the distributed current protection devices that can communicate with each other, and the communication network topology structure describes the communication path between the distributed current protection devices. Based on the obtained communication network topology structure, it is determined which devices have a communication channel with the first identified device, and the distributed current protection devices having a communication channel with the first identified device are taken as candidate relay devices to generate a candidate relay device set. Each device in the candidate relay device set has the potential to be a relay point to help restore or improve the communication quality of the first identified device.

[0038] The communication quality of each device in the candidate relay device set and the first identification device is tested, that is, data transmission is performed between each device and the first identification device, and parameters such as delay, packet loss rate, signal strength of the data transmission are measured, and the communication quality is evaluated according to the parameters such as delay, packet loss rate, signal strength of the data transmission. Specifically, a large number of data transmission test samples and corresponding communication quality scores can be obtained based on existing technologies, and a communication quality evaluation model is constructed based on existing machine learning model training, which is a common technical means for those skilled in the art and will not be expanded here. The parameters such as delay, packet loss rate, signal strength of the data transmission are analyzed by the communication quality evaluation model, and the communication quality score of each device in the candidate relay device set and the first identification device is generated, and the multi-terminal communication test verification result is generated. To support subsequent relay communication. Further, according to the multi-terminal communication test verification result, the device with the best communication quality is selected as the first auxiliary relay communication node. To optimize the communication network, improve the stability and reliability of data transmission, and further ensure the accuracy of subsequent current protection decision.

[0039] Further, please refer to the attached Figure 2 The global collaborative optimization module 15 in the system is also used for: The update data transmission result is analyzed to receive the multiple abnormal decision response information for power grid global state prediction to obtain a first global state index; the first global state index is used for distributed state abnormal factor tracing to generate a first abnormal decision device; and the first abnormal decision device is subjected to global abnormal processing optimization to generate the multiple distributed protection decisions.

[0040] Further, the global collaborative optimization module 15 in the system is also used for: It is judged whether the first global state index meets a preset global state index; if yes, the multiple abnormal decision response information is used to generate the multiple distributed protection decisions; and if no, local-global decision influence correlation is performed based on the multiple abnormal decision response information to generate the first abnormal decision device.

[0041] Further, the global collaborative optimization module 15 in the system is also used for: The target preset protection logic of the first abnormal decision device is obtained; the target preset protection logic is used to construct an optimization space, and decision optimization is performed with the global state index meeting the preset global state index as the target to generate the multiple distributed protection decisions.

[0042] Specifically, the update data transmission result is analyzed to obtain a plurality of abnormal decision response information contained in the update data transmission result, and a global state of the power grid is predicted. The global state prediction is to predict the overall health and stability of the target distribution network, and obtain a first global state index. The first global state index is a quantitative description of the state of the power grid after the execution of the plurality of abnormal decision response information, which helps the central decision center understand the overall performance and potential risks of the power grid. Specifically, based on the existing technology, a large number of abnormal decision response information samples and power grid health state samples can be obtained, and a power grid state analysis model can be constructed based on an existing machine learning model training. The plurality of abnormal decision response information is analyzed, and the first global state index is output.

[0043] Then, based on the first global state index, the central decision center performs distributed state abnormal factor tracing to determine the specific device that causes the abnormal state of the power grid. The specific implementation steps are as follows: determining whether the first global state index meets a preset global state index. The preset global state index is a threshold or range set by a professional in the art according to the safe operation standard of the power grid, which reflects the normal operating state that the power grid can accept. If the first global state index meets the preset global state index, that is, the overall state of the power grid is within the safe range, the central decision center will use the plurality of abnormal decision response information as the plurality of distributed protection decisions, that is, the processing effect of the plurality of abnormal decision response information can ensure the overall operation safety of the distribution network.

[0044] If the first global state index does not meet the preset global state index, that is, the overall state of the power grid exceeds the safe range, the central decision center will perform local-global decision influence correlation based on the plurality of abnormal decision response information, that is, the degree of influence on the global power grid state after local circuit protection control according to any one abnormal decision response information. Specifically, the historical current protection record can be obtained based on the plurality of abnormal decision response information, the historical current protection record includes the pre-protection power grid state and the post-protection power grid state, and the difference between the pre-protection power grid state and the post-protection power grid state is compared as the negative influence degree of any one abnormal decision response information on the global power grid state, that is, the degree of deterioration of the power grid state. The distributed current protection device corresponding to the abnormal decision response information whose negative influence degree exceeds the preset influence degree is obtained as the first abnormal decision device, which provides support for subsequent global abnormal processing optimization, ensures the accuracy of current protection control, and further improves the operation safety of the distribution network.

[0045] Finally, the first abnormal decision device is subjected to global abnormal processing optimization, and the specific steps are as follows: the target preset protection logic refers to the preset protection logic corresponding to the first abnormal decision device, which defines the protection action to be taken when a current abnormality is detected.

[0046] The central decision center uses the obtained target preset protection logic to build an optimization space, which is a set containing all possible protection actions. In the optimization space, the goal of the central decision center is to find a set of protection strategies so that the global state index meets the preset global state index. That is, in the optimization space, a protection scheme is sought that can effectively handle abnormal situations while keeping the overall state of the power grid within a safe range. Specifically, the protection actions in the optimization space can be iterated, and the global state of the power grid can be predicted until a protection action that meets the preset global state index is obtained. Together with the abnormal decision response information of other devices except the first abnormal decision device, multiple distributed protection decisions are formed. In this way, the state of the power grid is considered, and the protection strategy of the power grid is optimized to ensure the safe and stable operation of the power grid.

[0047] Finally, the multiple distributed protection decisions are transmitted back to the multiple distributed current protection devices for current protection control, optimizing the protection strategy of the power grid and ensuring the safe and stable operation of the power grid.

[0048] Further, the system further comprises a complete communication abnormality analysis module, which is configured to: According to the result of the multi-terminal communication test verification, it is determined whether the first identification device is in a complete communication abnormality mode. If so, a first communication abnormality warning information is generated, and a response is made through the human-computer interaction port of the central decision center.

[0049] Specifically, according to the result of the multi-terminal communication test verification, it is determined whether the first identification device is in a complete communication abnormality mode. The complete communication abnormality mode refers to a situation where the communication between the first identification device and the central decision center is completely interrupted and there is no data transmission. If the determination result shows that the first identification device is indeed in a complete communication abnormality mode, the central decision center will generate a first communication abnormality warning information. The first communication abnormality warning information is a warning or notification indicating the communication problem of the first identification device, and a response is made to the first communication abnormality warning information through the human-computer interaction port. The human-computer interaction port is an interface of the central decision center, allowing the operator to interact with the system, receiving notifications and warnings from the system, and taking appropriate measures. In this way, communication abnormalities are identified and handled in a timely manner, ensuring smooth communication between distributed current protection devices, thereby improving the protection efficiency and response speed of the power system.

[0050] In summary, the current protection device synchronization control and abnormal response optimization system provided by the present application has the following technical effects: The protection device acquisition module is used for acquiring a central decision center and a plurality of distributed current protection devices of a target power distribution network; the local anomaly analysis module is used for performing local anomaly identification and anomaly processing through a current monitoring module and a preset protection logic in the plurality of distributed current protection devices, generating a plurality of anomaly decision response information and transmitting the anomaly decision response information to the central decision center; the synchronism identification module is used for performing communication synchronism identification at the central decision center, acquiring a first identification device of synchronism anomaly and performing multi-terminal communication test checking; the auxiliary transmission module is used for establishing a first auxiliary relay communication node according to a multi-terminal communication test checking result, performing auxiliary transmission on the anomaly decision response information of the first identification device, and obtaining an update data transmission result; and the global cooperative optimization module is used for performing global cooperative protection decision optimization at the central decision center according to the update data transmission result, generating a plurality of distributed protection decisions for current protection control. After local anomaly processing is performed through the plurality of distributed current protection devices, anomaly decision response information is sent to the central decision center for global cooperative protection decision optimization, centralized monitoring and cooperative control of the plurality of distributed current protection devices in the target power distribution network are realized, stable and safe operation of the power distribution network is ensured, and the technical effect of improving current protection control accuracy is achieved.

[0051] The above description of disclosed embodiments allows one skilled in the art to make or use the application. Numerous modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0052] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Accordingly, the present application intends to include all such modifications and changes as fall within the scope of the present application and its equivalents.

Claims

1. A synchronous control and abnormal response optimization system for a current protection device, characterized in that, include: The protection device acquisition module is used to acquire the central decision-making center and multiple distributed current protection devices of the target distribution network. The local anomaly analysis module is used to identify and process local anomalies through the current monitoring modules and preset protection logic in multiple distributed current protection devices, generate multiple anomaly decision response information and transmit it to the central decision center. The synchronization identification module is used to identify communication synchronization in the central decision-making center, obtain the first identification device for synchronization anomalies, and perform multi-terminal communication test verification. The auxiliary transmission module is used to establish a first auxiliary relay communication node based on the multi-terminal communication test verification results, and to perform auxiliary transmission of the abnormal decision response information of the first identification device to obtain the updated data transmission result. The global collaborative optimization module is used to optimize global collaborative protection decisions in the central decision-making center based on the updated data transmission results, and generate multiple distributed protection decisions for current protection control.

2. The system as described in claim 1, characterized in that, The local anomaly analysis module is also used for: Based on the plurality of distributed current protection devices, the first distributed current protection device, the corresponding first current monitoring module, and the first preset protection logic are extracted. Based on the first current monitoring module, the first current monitoring data is collected, and the first preset protection logic is combined to match the protection action and generate the first abnormal decision response information. The first abnormal decision response information is added to the plurality of abnormal decision response information.

3. The system as described in claim 1, characterized in that, The synchronization identification module is also used for: Based on the data transmission results, a coverage analysis is performed on the multiple distributed current protection devices, and a communication interruption device is output. Based on the data transmission results, data transmission stability is identified, and a communication fluctuation anomaly device is output. The first identification device is generated using the communication interruption device and the communication fluctuation anomaly device.

4. The system as described in claim 3, characterized in that, The synchronization identification module is also used for: Obtain the communication network topology of the multiple distributed current protection devices; Based on the communication network topology, a set of candidate relay devices that have a communication channel with the first identification device is obtained; The communication quality test between the candidate relay device set and the first identification device is performed to obtain the multi-terminal communication test verification results.

5. The system as described in claim 1, characterized in that, The global collaborative optimization module is also used for: The updated data transmission results are parsed, and the power grid global state is predicted using the received multiple abnormal decision response information to obtain the first global state index. Based on the first global state index, a distributed state anomaly factor tracing is performed to generate a first anomaly decision-making device. The first anomaly decision-making device performs global anomaly processing optimization to generate the multiple distributed protection decisions.

6. The system as described in claim 5, characterized in that, The global collaborative optimization module is also used for: Determine whether the first global state indicator meets the preset global state indicator; If so, the multiple distributed protection decisions are generated using the multiple abnormal decision response information; If not, the first abnormal decision-making device is generated by performing local-global decision impact correlation based on the multiple abnormal decision response information.

7. The system as described in claim 5, characterized in that, The global collaborative optimization module is also used for: Obtain the target preset protection logic of the first anomaly decision-making device; An optimization space is constructed based on the target preset protection logic. With the goal of satisfying the preset global state index, decision optimization is performed to generate the multiple distributed protection decisions.

8. The system as described in claim 1, characterized in that, The system also includes a complete communication anomaly analysis module, which is used for: Based on the results of the multi-terminal communication test, determine whether the first identification device is in a completely abnormal communication mode; If so, a first communication anomaly alert message is generated and responded through the human-machine interaction port of the central decision-making center.

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