Fault power recovery method and device of power distribution network, electronic equipment and storage medium

Abstract

The invention discloses a fault power recovery method and device for a power distribution network, electronic equipment and a storage medium. The method comprises the steps that in the normal operation process of the power distribution network, real-time line condition information of the power distribution network is acquired, and the real-time line condition information at least comprises one of the following information: the power direction and amplitude information; under the condition that the power distribution network breaks down, a fault section in the power distribution network is isolated, and a non-fault section in the power distribution network is obtained; based on the multi-source data of the non-fault section, a power supply recovery path is determined, and the multi-source data at least comprises the historical load data of the non-fault section and the switch state data of each section; and performing power supply and power restoration on a non-fault section in the power distribution network based on the power supply and power restoration path. According to the invention, the technical problem of low efficiency of fault power recovery of the power distribution network in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of power restoration after a power distribution network failure, and in particular to a method, a device, an electronic device and a storage medium for power restoration after a power distribution network failure. Background Art

[0002] When a power outage occurs due to a fault in the distribution network, it is necessary to inspect and repair the faulty equipment or lines, reconnect the power supply, and restore normal power supply to the blackout area. This is to restore power to the distribution network, aiming to restore power supply to the blackout area as soon as possible and reduce the impact of the power outage on users.

[0003] At present, the related technologies for restoring power to distribution networks after faults usually need to rely on relevant technical personnel to conduct fault investigation and rely on expert experience to formulate power restoration plans, and the timeliness of power restoration is low; and after a distribution network fault occurs, it is usually necessary to completely investigate and handle the fault before the entire distribution network can be restored, which can easily cause fluctuations and instability in the overall power supply of the distribution network, resulting in low efficiency in the related technologies for restoring power to distribution networks after faults.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method, device, electronic device and storage medium for restoring power after a fault in a distribution network, so as to at least solve the technical problem of low efficiency in restoring power after a fault in a distribution network in the related art.

[0006] According to one aspect of an embodiment of the present invention, a method for restoring power after a fault in a distribution network is provided, comprising: during normal operation of the distribution network, obtaining real-time line status information of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; in the event of a fault in the distribution network, isolating the faulty section in the distribution network to obtain a non-faulty section in the distribution network; determining a power supply restoration path based on multi-source data of the non-faulty section, wherein the multi-source data includes at least: historical load data of the non-faulty section and switch status data of each section; and restoring power to the non-faulty section in the distribution network based on the power supply restoration path.

[0007] Optionally, in the event of a fault in the distribution network, the faulty section in the distribution network is isolated to obtain a non-faulty section in the distribution network, including: in the event of a fault in the distribution network, disconnecting the upstream switch and the downstream switch of the faulty section, and disconnecting the branch switch of the faulty downstream section to obtain a non-faulty section, wherein the faulty downstream section is used to represent a section in the distribution network that is located downstream of the power supply of the faulty section.

[0008] Optionally, based on multi-source data of non-fault sections, a power supply restoration path is determined, including: based on the multi-source data, determining the power supply restoration priority of the non-fault section, wherein the power supply restoration priority is used to indicate the execution priority of power supply restoration to each branch in the non-fault section; based on the power supply restoration priority, determining the power supply restoration path.

[0009] Optionally, the power supply restoration priority corresponding to the first branch in the non-fault section is greater than the power supply restoration priority corresponding to the second branch, wherein the first branch is used to represent a branch with distributed power supply access, and the second branch is used to represent a branch without distributed power supply access.

[0010] Optionally, the first branch includes a third branch and a fourth branch; the power supply restoration priority corresponding to the third branch in the first branch is greater than the power supply restoration priority corresponding to the fourth branch, wherein the third branch has distributed power supply access, the fourth branch has distributed power supply access, and the historical load data corresponding to the third branch is less than the historical load data corresponding to the fourth branch.

[0011] Optionally, the power supply restoration path includes multiple execution sub-steps; based on the power supply restoration path, power supply is restored to the non-fault section in the distribution network, including: executing the first sub-step of the multiple execution sub-steps, and obtaining real-time line status information of the non-fault section after waiting for a preset time; updating the remaining sub-steps based on the real-time line status information of the non-fault section to obtain an updated power supply restoration path, wherein the remaining sub-steps are used to represent the sub-steps located after the first sub-step in the multiple execution sub-steps; based on the updated power supply restoration path, power supply is restored to the non-fault section.

[0012] According to another aspect of an embodiment of the present invention, a fault restoration device for a distribution network is also provided, comprising: an acquisition module, used to acquire real-time line status information of the distribution network during normal operation of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; an isolation module, used to isolate the faulty section in the distribution network in the event of a fault in the distribution network to obtain a non-faulty section in the distribution network; a determination module, used to determine a power supply restoration path based on multi-source data of the non-faulty section, wherein the multi-source data includes at least: historical load data of the non-faulty section and switch status data of each segment; a restoration module, used to restore power to the non-faulty section in the distribution network based on the power supply restoration path.

[0013] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0018] In an embodiment of the present invention, a method for restoring power after a fault in a distribution network is provided, comprising: obtaining real-time line status information of the distribution network during normal operation of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; in the event of a fault in the distribution network, isolating the faulty section in the distribution network to obtain a non-faulty section in the distribution network; determining a power supply restoration path based on multi-source data of the non-faulty section, wherein the multi-source data includes at least: historical load data of the non-faulty section and switch status data of each section; and restoring power to the non-faulty section in the distribution network based on the power supply restoration path. It is easy to notice that the present application, by acquiring real-time line status information during the normal operation of the distribution network, provides a data basis and support for the subsequent power supply restoration when a distribution network fault occurs. The faulty section can be isolated to ensure power safety and stable power supply, so that the non-fault section can continue to be powered, and it is convenient to restore power to the non-fault section first when the fault has not been eliminated, thus avoiding power outages in the entire distribution network, preventing the fault from expanding and affecting the entire distribution network, and ensuring the safe and stable operation of the entire power grid. The power supply restoration path can be determined based on multi-source data of the non-fault section, and the power supply restoration path can be optimized by multi-source data, which can reduce manual intervention, improve the efficiency of power supply restoration in the distribution network, and reduce the cost of restoration, thereby solving the technical problem of low efficiency in fault restoration of the distribution network in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a flow chart of a method for restoring power to a distribution network after a fault according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of an optional power restoration after a power distribution network failure according to an embodiment of the present invention;

[0022] Figure 3 4 is a schematic diagram of a fault power restoration device for a distribution network according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] According to an embodiment of the present invention, an embodiment of a method for restoring power after a fault in a distribution network is provided. It can be explained that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0026] Figure 1 is a flow chart of a method for restoring power to a distribution network according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0027] Step S102: during the normal operation of the distribution network, real-time line status information of the distribution network is obtained.

[0028] The real-time line status information includes at least one of the following: power direction and amplitude information.

[0029] In an optional embodiment, obtaining real-time line status information of the distribution network can help operation and maintenance personnel to promptly discover and solve problems and ensure the normal operation of the distribution network. The real-time line status information includes at least power direction or amplitude information, which can help operation and maintenance personnel understand the flow of electricity in the distribution network, adjust and maintain equipment in a timely manner, and ensure the quality and reliability of power supply. Specifically, the acquisition process of real-time line status information can be achieved through smart meters, sensors and other equipment. Smart meters can monitor power usage in real time, record power consumption data and realize remote communication. Real-time power direction and amplitude information can be obtained through smart meters, thereby helping operation and maintenance personnel monitor power flow. Sensors can be installed at various key nodes of the distribution network to monitor parameters such as current and voltage in real time, and transmit data to the monitoring center to provide real-time line status information for operation and maintenance personnel, and provide data basis and support for subsequent power supply restoration when a failure occurs in the distribution network.

[0030] Step S104: when a fault occurs in the distribution network, the fault section in the distribution network is isolated to obtain a non-fault section in the distribution network.

[0031] In an optional embodiment, isolating the fault section can ensure electricity safety and stable power supply, so that the non-fault section can continue to be powered. Specifically, a fault detection device can be installed in the distribution network to monitor the fault situation in the distribution network. When a fault occurs, the detection device can send a signal to the automatic isolation device. The automatic isolation device can isolate the fault section according to the received signal. The isolation operation can be achieved by a circuit breaker or an isolating switch to separate the fault section from the non-fault section. For example, assuming that a short circuit fault occurs in a certain line in a distribution network, the fault detection device can find the fault and send a signal. After receiving the signal, the automatic isolation device can open the corresponding circuit breaker to isolate the fault line. This makes it convenient to restore power to the non-fault section first when the fault section has not been eliminated, avoiding power outages in the entire distribution network. Through the above steps, isolating the fault section can ensure that the non-fault section continues to be powered, improve power supply reliability, reduce power outage time and impact range, and timely isolate the fault section to prevent the fault from expanding and affecting the entire distribution network, ensuring the safe and stable operation of the entire power grid. By reasonably setting up automatic isolation devices and corresponding equipment, the power supply reliability can be effectively improved, the power supply can be restored quickly, the accident can be avoided from expanding, and the safe and stable operation of the power grid can be guaranteed.

[0032] Step S106, determining a power restoration path based on multi-source data of the non-fault section.

[0033] The multi-source data at least includes: historical load data of non-fault sections and switch status data of each section.

[0034] In an optional embodiment, the power supply restoration path can be determined based on multi-source data of non-fault sections. Specifically, the historical load data of non-fault sections and the switch status data of each segment can be collected first. The historical load data can help analyze the load situation of each section, and the switch status data can determine the current state of each switch. After the data is collected, the data can be cleaned and processed to ensure the accuracy and integrity of the data. This step may include data deduplication, missing value filling, outlier processing, etc. Based on the collected data, a power supply restoration path model can be established. This model can determine the power supply restoration path based on historical load data and switch status data, that is, determine which sections can be re-powered and which switches can be turned on. Optimization algorithms can also be used for path planning, and the optimization algorithms may include genetic algorithms, simulated annealing algorithms, etc. In the above process, by optimizing the power supply restoration path, manual intervention can be reduced, the power supply restoration efficiency of the distribution network can be improved, and the restoration cost can be reduced. By utilizing multi-source data and optimization algorithms, intelligent operation and management of the distribution network can be realized, operation efficiency and response speed can be improved, and the stability and reliability of power supply can be guaranteed.

[0035] Step S108: Restoring power to the non-faulty sections in the distribution network based on the power restoration path.

[0036] In an optional embodiment, power supply can be restored to non-fault sections in the distribution network based on the power supply restoration path. Specifically, after confirming the power supply restoration path, power supply restoration operations can be performed on non-fault sections to ensure that the power supply process is safe and reliable. In the above process, when a fault occurs, timely power supply restoration to non-fault sections can avoid power outages in the entire distribution network and improve power supply reliability and stability. Timely power supply restoration to non-fault sections can reduce the scope of the fault impact and avoid the expansion of the fault to cause greater impact on the entire power grid.

[0037] In an embodiment of the present invention, a method for restoring power after a fault in a distribution network is provided, comprising: obtaining real-time line status information of the distribution network during normal operation of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; in the event of a fault in the distribution network, isolating the faulty section in the distribution network to obtain a non-faulty section in the distribution network; determining a power supply restoration path based on multi-source data of the non-faulty section, wherein the multi-source data includes at least: historical load data of the non-faulty section and switch status data of each section; and restoring power to the non-faulty section in the distribution network based on the power supply restoration path. It is easy to notice that the present application, by acquiring real-time line status information during the normal operation of the distribution network, provides a data basis and support for the subsequent power supply restoration when a distribution network fault occurs. The faulty section can be isolated to ensure power safety and stable power supply, so that the non-fault section can continue to be powered, and it is convenient to restore power to the non-fault section first when the fault has not been eliminated, thus avoiding power outages in the entire distribution network, preventing the fault from expanding and affecting the entire distribution network, and ensuring the safe and stable operation of the entire power grid. The power supply restoration path can be determined based on multi-source data of the non-fault section, and the power supply restoration path can be optimized by multi-source data, which can reduce manual intervention, improve the efficiency of power supply restoration in the distribution network, and reduce the cost of restoration, thereby solving the technical problem of low efficiency in fault restoration of the distribution network in related technologies.

[0038] Optionally, in the event of a fault in the distribution network, the faulty section in the distribution network is isolated to obtain a non-faulty section in the distribution network, including: in the event of a fault in the distribution network, disconnecting the upstream switch and the downstream switch of the faulty section, and disconnecting the branch switch of the faulty downstream section to obtain a non-faulty section, wherein the faulty downstream section is used to represent a section in the distribution network that is located downstream of the power supply of the faulty section.

[0039] In an optional embodiment, the positions of the upstream switch and the downstream switch of the fault section can be determined first according to the position of the fault section. Then, the upstream switch and the downstream switch of the fault section are disconnected to prevent the fault current from propagating to the non-fault section. Then, the branch switch of the fault downstream section can be disconnected to ensure that the fault current cannot enter the non-fault section. For example, when a section of the distribution network fails, the section cannot be powered normally. In order to ensure the normal operation of the power supply of other sections, the fault section can be isolated. The position of the fault section is determined by the remote monitoring system, and then the upstream switch and the downstream switch of the fault section are automatically disconnected, and the branch switch of the fault downstream section is disconnected at the same time. In this way, the fault current can be isolated in the fault section and will not affect other sections. Through the above steps, it is convenient to restore power to the non-fault section first when the fault of the fault section is not eliminated. By isolating the fault section, the normal operation of the power supply of the non-fault section can be ensured, and the power outage of the entire distribution network can be avoided. By isolating the fault section in time, the impact of the fault on the entire distribution network can be reduced, the normal operation of the power supply of other sections can be ensured, and the reliability and stability of the distribution network can be improved.

[0040] Optionally, based on multi-source data of non-fault sections, a power supply restoration path is determined, including: based on the multi-source data, determining the power supply restoration priority of the non-fault section, wherein the power supply restoration priority is used to indicate the execution priority of power supply restoration to each branch in the non-fault section; based on the power supply restoration priority, determining the power supply restoration path.

[0041] In an optional embodiment, the power supply restoration path can be determined based on multi-source data of the non-fault section. Specifically, multi-source data can be collected, and historical load data of the non-fault section and switch status data of each segment can be collected; by analyzing the historical load data and switch status data, the power supply restoration priority of each branch in the non-fault section can be determined. Then, according to the determined power supply restoration priority, the power supply restoration path can be determined. That is, in the order of priority, the branches in the non-fault section are gradually powered on and restored; for example, it is assumed that a fault occurs in a distribution network, resulting in power outages in some branches. By collecting historical load data and switch status data, the power supply restoration priority of each branch is determined. According to the priority, the branch corresponding to the power supply restoration priority is first powered on and restored, and then power is gradually provided to other branches until all branches are powered on and restored. In the above process, the power supply restoration path is determined by multi-source data, which can ensure the reasonable allocation of resources in the power restoration process and improve the power restoration efficiency. By reasonably allocating resources and optimizing the power supply restoration path, power supply can be restored faster and the impact of power outages can be reduced.

[0042] Optionally, the power supply restoration priority corresponding to the first branch in the non-fault section is greater than the power supply restoration priority corresponding to the second branch, wherein the first branch is used to represent a branch with distributed power supply access, and the second branch is used to represent a branch without distributed power supply access.

[0043] In an optional embodiment, the system can divide the non-fault section into multiple sections. Then, the branches in each section are classified to distinguish between branches with distributed power access and branches without distributed power access. In the specific implementation process, the system can identify and locate the faulty section according to the topological structure and fault information of the distribution network. Then, the system can determine the priority of power restoration of each branch according to the pre-set rules. For the first branch of the branch with distributed power access, the system can give priority to restoring power supply to ensure the normal operation of the distributed power supply. For example, suppose there are two branches in a non-fault section, branch A and branch B. Branch A is connected to a distributed photovoltaic power generation system, and branch B is not connected to a distributed power supply. If a fault occurs in the section, the system can first restore the power supply of branch A to ensure the operation of the photovoltaic power generation system. In the above steps, by giving priority to restoring the branch with distributed power access, the normal operation of the distributed power supply can be guaranteed, the power supply reliability and stability of the system can be improved, the stability and reliability of the distribution network can be effectively improved, the energy utilization efficiency can be optimized, and the response speed of the system can be improved.

[0044] Optionally, the first branch includes a third branch and a fourth branch; the power supply restoration priority corresponding to the third branch in the first branch is greater than the power supply restoration priority corresponding to the fourth branch, wherein the third branch has distributed power supply access, the fourth branch has distributed power supply access, and the historical load data corresponding to the third branch is less than the historical load data corresponding to the fourth branch.

[0045] In an optional embodiment, real-time data collection can be performed on each branch in the first branch, including historical load data, distributed power supply access status, etc. The collected historical load data is compared to determine which branches have lower historical load data, and it can be determined that the historical load data corresponding to the third branch is less than the historical load data corresponding to the fourth branch. The power supply restoration priority of the third branch and the fourth branch is determined according to the comparison result, so that the power supply restoration priority of the third branch is greater than that of the fourth branch. According to the determined priority order, the third branch is first powered on and then the fourth branch is powered on, ensuring that the branch with lower historical load data is powered first. The above-mentioned historical load data can refer to the power consumption data of a branch in the past period of time, which can be used to analyze the load characteristics of the branch and predict future power consumption. In the above process, by setting the branch with lower historical load data to be powered on first, limited standby power can be used to restore as many non-fault branches as possible, which can effectively reduce the power outage time of users and improve the reliability of power supply. By reasonably allocating the power supply restoration priority, the operating efficiency of the distribution network can be optimized, the load loss of the system can be reduced, and the overall performance of the system can be improved.

[0046] Optionally, the power supply restoration path includes multiple execution sub-steps; based on the power supply restoration path, power supply is restored to the non-fault section in the distribution network, including: executing the first sub-step of the multiple execution sub-steps, and obtaining real-time line status information of the non-fault section after waiting for a preset time; updating the remaining sub-steps based on the real-time line status information of the non-fault section to obtain an updated power supply restoration path, wherein the remaining sub-steps are used to represent the sub-steps located after the first sub-step in the multiple execution sub-steps; based on the updated power supply restoration path, power supply is restored to the non-fault section.

[0047] In an optional embodiment, the first sub-step of the multiple execution sub-steps is executed, and after waiting for a preset time, the real-time line status information of the non-fault section is obtained. The real-time line status information of the non-fault section can be obtained by obtaining real-time data such as current, voltage, power, etc. of the non-fault section through a monitoring device, so that subsequent steps can be analyzed and updated. Then, based on the real-time line status information of the non-fault section, the remaining sub-steps can be updated to obtain an updated power supply restoration path. The update process can include re-planning the power supply path according to the real-time data, adjusting the switch status, etc. Finally, according to the updated power supply restoration path, the non-fault section can be gradually powered on to ensure that the power load in each area is restored within a safe range and avoid overload or power quality problems. In the above steps, by gradually restoring the power in different areas, it can be ensured that the power load in each area is restored within a safe range, avoiding overload or power quality problems caused by restoring too many areas at one time; through the refined control of gradual closing of the circuit breaker, problems such as load imbalance or voltage fluctuation can be avoided during the power restoration process, thereby improving the stability and reliability of the power supply system, ensuring the power demand of users, and helping to reduce human errors and operational errors during the restoration process, thereby improving the efficiency and safety of fault power restoration.

[0048] The technical solution proposed in this application is described below in combination with an optional embodiment. This application proposes a method for restoring power to an intelligent distribution terminal based on a master station. In actual operation, due to the limitations of transformer capacity, line load and other power equipment, the interconnection line often cannot provide sufficient power for all non-fault sections, especially when the load is large or the system configuration is complex. The traditional method of restoring power supply is usually estimated based on the load power downstream of the fault point, but this method has certain limitations and it is difficult to fully consider the impact of diversified power supply resources and real-time power flow. With the access of distributed power sources, such as photovoltaic and wind power, the power supply sources of the distribution network are more diverse, and the power direction and amplitude have become more complex. In this context, the traditional power supply restoration method based on load power is difficult to meet the needs of modern distribution network intelligence and automation. The real-time power direction and amplitude information uploaded by the intelligent distribution terminal proposed in this application, combined with the multi-source information before the fault, the master station can more accurately evaluate the recovery capacity of each interconnection line and optimize the power supply restoration plan, thereby achieving more efficient and stable fault recovery and power supply guarantee.

[0049] The present application provides a distribution network intelligent power restoration analysis method based on multi-source information, which can make an accurate judgment on the power restoration situation of the distribution network, and can include the following steps: uploading the power direction and amplitude information of the line in real time; when a fault occurs in the line, automatically isolating the faulty section; formulating a suitable power restoration logic; closing the interconnecting switch; executing the power restoration operation according to the formulated suitable power restoration logic; completing the power restoration operation of a section of the line, and re-formulating the suitable power restoration logic after the state; when the load power exceeds the standard during the power restoration process, re-planning the suitable power restoration path; executing the optimized power supply restoration path to ensure the implementation of the suitable power restoration plan.

[0050] Automatic isolation of the fault section can be achieved by disconnecting the upstream and downstream switches of the faulty main line, disconnecting the branch switches downstream of the fault, etc. The formulation of the appropriate power restoration logic can be as follows: according to the changes in historical and real-time load data, power direction and amplitude information, calculate the appropriate power restoration path, give priority to areas with distributed power sources and historically light loads for restoration, and adopt a gradual closing strategy. During the power restoration process, the master station can continuously monitor load changes and dynamically update power direction and amplitude information. When the system detects that the load power exceeds the maximum capacity of the main line, the master station automatically triggers the power restoration path optimization program, first disconnecting the line with the largest load according to the real-time power and amplitude, and then re-planning and executing the optimized power restoration path according to the real-time power data and the power direction and amplitude information of the restored area. The power restoration operation can be performed step by step according to the formulated appropriate power restoration path.

[0051] This application uses a master-station-based intelligent power distribution terminal restoration method to calculate a suitable restoration path using real-time power direction and amplitude information and multi-source data, which can improve fault recovery efficiency and effectively reduce overload and voltage fluctuations. The gradual closing strategy during the restoration process can achieve safe and stable restoration of power supply in various regions. This application can improve the reliability, stability and intelligence level of the distribution network, optimize the fault recovery process, and improve the quality of power supply.

[0052] The present application can upload power direction and amplitude information in real time. The method uploads the power direction and amplitude information of the line in real time through the intelligent distribution terminal, providing the main station with dynamic power system status data. This enables the main station to monitor the operating status of the distribution network in real time and accurately evaluate the power supply capacity of each line and area, especially when a fault occurs. The fault section can be automatically isolated. When a fault occurs, the fault area is automatically isolated. By disconnecting the switches upstream and downstream of the fault main line and cutting off the branches downstream of the fault, it is ensured that the fault section will not affect the power supply of other areas. This strategy improves the safety and stability of the distribution network. The formulation of appropriate power restoration logic can be achieved. The present application proposes a method for calculating and formulating a suitable power restoration path based on historical load data, real-time power flow, including direction and amplitude, and the access status of distributed power sources. Areas with distributed power sources and lighter historical loads are given priority for restoration. Through the gradual closing strategy, the power restoration process is made more intelligent and efficient.

[0053] This application can realize dynamic monitoring and optimization during the power restoration process. During the power restoration process, the master station continuously monitors load changes and dynamically updates power direction and amplitude information based on real-time data. Path optimization can be performed when the load exceeds the standard. If the system finds that the load power exceeds the standard, the master station will automatically trigger the power restoration path optimization program. First, the line with the largest load is disconnected according to the real-time power and amplitude information, and then the power restoration path is re-planned to optimize the fault recovery plan. The comprehensive utilization of multi-source information can be realized. This application comprehensively utilizes the real-time power direction, amplitude information, historical load data and distributed power source information of the line to fully understand the status of the distribution network, dynamically adjust the power restoration plan, and can more accurately evaluate the power restoration path and recovery strategy. This application can make more intelligent and accurate decisions based on real-time information.

[0054] This application can realize intelligent decision-making for optimizing the power restoration path. By formulating appropriate power restoration logic and adjusting the power restoration path in real time, this application can give priority to areas with light loads and distributed power sources for restoration, and adopt a gradual closing strategy to ensure a smooth and efficient power restoration process. The dynamic planning of the power restoration path not only avoids the risk of overload, but also adapts to the complex power system structure. Real-time dynamic monitoring and adjustment can be achieved. This application continuously monitors the load changes during the power restoration process through the master station, and dynamically adjusts the power direction and amplitude information according to real-time data. When the load power exceeds the standard, the master station can automatically trigger the power restoration path optimization program, disconnect the line with the largest load in time, and re-plan the optimized power restoration path, thereby avoiding the occurrence of overload. A gradual closing strategy can be implemented to ensure power supply safety. This application adopts a gradual closing strategy to make each step in the power restoration process safer and smoother. By gradually restoring the power by partition, it can be ensured that the power load in each area is restored within a safe range, avoiding overload or power quality problems caused by restoring too many areas at one time. Automatic fault isolation and power restoration can be achieved. This application automatically isolates the faulty section when a fault occurs and formulates an appropriate power restoration strategy based on the real-time uploaded data.

[0055] Figure 2 FIG. 1 is a schematic diagram of an optional power restoration after a power distribution network failure according to an embodiment of the present invention. Figure 2 As shown, during the normal operation of the distribution network, the interconnecting switch S5 is disconnected by default, and the 10kV bus A supplies power to each branch. When a fault occurs at F1, S1 and S2 can be disconnected to isolate the faulty section in the distribution network, and the branch switches S6, S7, S8 and S9 in the downstream section of the fault can be disconnected. When the non-fault section is powered on and restored, the interconnecting switch S5 can be closed first, so that the 10kV bus B supplies power to the non-fault section. Here, the power supply restoration priority of each branch where the branch switches S6, S7, S8 and S9 are located can be determined. For example, since the branch where the branch switch S6 is located contains a distributed power source, when power supply is restored, the branch switch S6 can be closed first, and then the power supply restoration priority of each branch is determined based on multi-source data, and then the power supply restoration path is obtained.

[0056] According to another aspect of an embodiment of the present application, a distribution network fault restoration device is also provided, which can execute the distribution network fault restoration method of the above embodiment. The specific implementation method and preferred application scenario are the same as the above embodiment and will not be repeated here.

[0057] Figure 3 is a schematic diagram of a fault power restoration device for a distribution network according to an embodiment of the present application, such as Figure 3 As shown, the device includes the following: an acquisition module 302 , an isolation module 304 , a determination module 306 and a power restoration module 308 .

[0058] Among them, the acquisition module is used to obtain the real-time line status information of the distribution network during the normal operation of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; the isolation module is used to isolate the faulty section in the distribution network in the event of a fault in the distribution network to obtain the non-faulty section in the distribution network; the determination module is used to determine the power supply restoration path based on the multi-source data of the non-faulty section, wherein the multi-source data includes at least: the historical load data of the non-faulty section and the switch status data of each section; the restoration module is used to restore power to the non-faulty section in the distribution network based on the power supply restoration path.

[0059] Among them, the isolation module is also used to disconnect the upstream switch and downstream switch of the faulty section and disconnect the branch switch of the faulty downstream section to obtain a non-faulty section when a fault occurs in the distribution network, wherein the faulty downstream section is used to represent the section in the distribution network that is located downstream of the power supply of the faulty section.

[0060] Among them, the determination module is also used to determine the power supply restoration priority of the non-fault section based on multi-source data, wherein the power supply restoration priority is used to indicate the execution priority of power supply restoration to each branch in the non-fault section; based on the power supply restoration priority, the power supply restoration path is determined.

[0061] Among them, the power supply restoration priority corresponding to the first branch in the non-fault section is greater than the power supply restoration priority corresponding to the second branch, wherein the first branch is used to represent a branch with distributed power supply access, and the second branch is used to represent a branch without distributed power supply access.

[0062] Among them, the first branch includes the third branch and the fourth branch; the power supply restoration priority corresponding to the third branch in the first branch is greater than the power supply restoration priority corresponding to the fourth branch, wherein the third branch has distributed power supply access, the fourth branch has distributed power supply access, and the historical load data corresponding to the third branch is less than the historical load data corresponding to the fourth branch.

[0063] Among them, the power supply restoration path includes multiple execution sub-steps; the restoration module is also used to execute the first sub-step of the multiple execution sub-steps, and after waiting for a preset time, obtain the real-time line status information of the non-fault section; based on the real-time line status information of the non-fault section, the remaining sub-steps are updated to obtain an updated power supply restoration path, wherein the remaining sub-steps are used to represent the sub-steps located after the first sub-step in the multiple execution sub-steps; based on the updated power supply restoration path, power supply is restored to the non-fault section.

[0064] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0065] The above-mentioned memory may refer to a device inside a computer for storing data and programs, and may include memory, hard disk, etc., wherein the memory may be used to temporarily store running programs and data, the hard disk may be used to store programs and data for a long time, and the memory may be used to enable the computer to read and write data, and execute programs; the above-mentioned processor may be responsible for executing instructions in computer programs and performing data processing, and may be responsible for controlling and executing various operations, including arithmetic operations, logical operations, data transmission, etc.

[0066] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0067] The above-mentioned computer storage medium may refer to a medium in a computer memory used to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc.; the stored program included in the computer-readable storage medium may be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0068] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0069] The above-mentioned computer program product may refer to a software program that has been written, tested and released and can be run on a computer or other device. The computer program product may include an application, an operating system, tool software, etc., which is used to implement specific functions or solve specific problems.

[0070] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0071] The above-mentioned non-volatile computer-readable storage medium may refer to a medium for storing data. The non-volatile computer-readable storage medium can keep the data from being lost when the power is off, and can be used to store long-term data, such as operating systems, applications, and user files. The non-volatile storage medium may include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0072] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0073] The above-mentioned computer program may refer to a collection of instructions used to tell a computer to perform a specific task or operation. A computer program may be written by a programmer using a specific programming language and may include algorithms, data structures, logic, and control flows. A computer program may be used for a variety of purposes, including application software, operating systems, and the like.

[0074] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0076] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0077] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0078] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0079] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for restoring power after a power distribution network failure, characterized in that: include: During the normal operation of the distribution network, real-time line status information of the distribution network is obtained, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; In the event of a fault in the distribution network, isolating the faulty section in the distribution network to obtain a non-faulty section in the distribution network; Determine a power supply restoration path based on multi-source data of the non-fault section, wherein the multi-source data at least includes: historical load data of the non-fault section and switch status data of each segment; Based on the power supply restoration path, power supply is restored to the non-fault section in the distribution network.

2. The method for restoring power after a power failure in a distribution network according to claim 1, characterized in that: In the event of a fault in the distribution network, isolating the fault section in the distribution network to obtain a non-fault section in the distribution network includes: In the event of a fault in the distribution network, the upstream switch and the downstream switch of the faulty section are disconnected, and the branch switch of the faulty downstream section is disconnected to obtain the non-faulty section, wherein the faulty downstream section is used to represent the section in the distribution network that is located downstream of the power supply of the faulty section.

3. The method for restoring power after a power failure in a distribution network according to claim 1, characterized in that: Determining a power supply restoration path based on the multi-source data of the non-fault section includes: Based on the multi-source data, determining the power supply restoration priority of the non-fault section, wherein the power supply restoration priority is used to indicate the execution priority of power supply restoration for each branch in the non-fault section; The power restoration path is determined based on the power restoration priority.

4. The method for restoring power after a power failure in a distribution network according to claim 3, characterized in that: The power supply restoration priority corresponding to the first branch in the non-fault section is greater than the power supply restoration priority corresponding to the second branch, wherein the first branch is used to represent a branch with distributed power supply access, and the second branch is used to represent a branch without distributed power supply access.

5. The method for restoring power after a power failure in a distribution network according to claim 4, characterized in that: The first branch includes a third branch and a fourth branch; the power supply restoration priority corresponding to the third branch in the first branch is greater than the power supply restoration priority corresponding to the fourth branch, wherein the third branch has distributed power supply access, the fourth branch has distributed power supply access, and the historical load data corresponding to the third branch is less than the historical load data corresponding to the fourth branch.

6. The method for restoring power after a power failure in a distribution network according to claim 1, characterized in that: The power supply restoration path includes a plurality of execution sub-steps; Based on the power supply restoration path, restoring power to the non-fault section in the distribution network includes: Executing a first sub-step of the multiple execution sub-steps, and obtaining real-time line status information of the non-fault section after waiting for a preset time; Based on the real-time line status information of the non-fault section, the remaining sub-steps are updated to obtain an updated power supply restoration path, wherein the remaining sub-steps are used to represent the sub-steps located after the first sub-step in the multiple execution sub-steps; Based on the updated power restoration path, power is restored to the non-fault section.

7. A fault restoration device for a distribution network, characterized in that: include: An acquisition module is used to acquire real-time line status information of the distribution network during normal operation of the distribution network, wherein the real-time line status information includes at least one of the following: power direction and amplitude information; An isolation module, used for isolating a faulty section in the distribution network to obtain a non-faulty section in the distribution network when a fault occurs in the distribution network; A determination module, configured to determine a power supply restoration path based on multi-source data of the non-fault section, wherein the multi-source data at least includes: historical load data of the non-fault section and switch status data of each segment; A power restoration module is used to restore power to the non-fault section in the distribution network based on the power restoration path.

8. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein when the program is run, the fault power restoration method of the distribution network described in any one of claims 1 to 6 is executed.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is executed, the device where the storage medium is located is controlled to execute the method for restoring power to a distribution network according to any one of claims 1 to 6.

10. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the method for restoring power to a power distribution network according to any one of claims 1 to 6.

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