Power distribution network load transfer method, system, device and medium

Abstract

The invention discloses a power distribution network load transfer method, system and device and a medium. The method comprises the following steps: determining a to-be-transferred area based on a fault area; dividing the to-be-forwarded area into a plurality of load blocks based on the device type and the device attribute of each terminal device in the to-be-forwarded area; determining a plurality of candidate transfer source lines from the reference transfer source lines based on any one of the load blocks; performing simulation transfer on the load block based on the switching state information of each candidate transfer source line and the interconnection switch, determining the load condition of the candidate transfer source line corresponding to each simulation transfer, and determining the candidate transfer source line corresponding to the load condition meeting the target condition as the target transfer source line of the load block; and load transfer is carried out based on all the target transfer source lines. The load transfer scheme is formed by comprehensively considering the load condition, the equipment type and other multi-dimensional factors of the equipment in the power distribution network line, and compared with the scheme only considering the large reserve capacity, the operation reliability of the power distribution network can be better guaranteed.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of power grid operation, dispatch and control technology, and in particular to a method, system, device and medium for load transfer in a distribution network. Background Technology

[0002] Current distribution automation systems rely on simplified preset rules for load transfer strategies during power restoration in non-faulty areas. For example, they prioritize transferring power to tie lines with larger standby capacity. The load transfer decision-making process lacks comprehensive consideration of multi-dimensional operational factors such as the load distribution balance of lines in the distribution network and line priorities. Such load transfer schemes have low intelligence levels, making it difficult to ensure optimal load transfer and robustness. This can easily lead to insufficient resource utilization, load imbalance, and affect the operational reliability of the distribution network. Summary of the Invention

[0003] This application provides a method, system, device, and medium for load transfer in a power distribution network, which can avoid secondary overload and resource imbalance after load transfer operations and ensure the operational reliability of the power distribution network.

[0004] In a first aspect, embodiments of this application provide a method for load transfer in a distribution network, applied to a distribution network system, the distribution network system including multiple terminal devices, the method comprising:

[0005] Based on the operating status information of each terminal device, the fault area is determined, and based on the fault area, the area to be transferred to the power distribution network system is determined.

[0006] Based on the equipment type and equipment attributes of each terminal device in the area to be transferred, the area to be transferred is divided into multiple load blocks;

[0007] Based on any of the load blocks, multiple candidate power transfer lines are determined from the corresponding reference power transfer lines;

[0008] Based on the switching status information of each candidate power transfer source line and the corresponding tie switch, the load block is simulated for power transfer, and the load status of the candidate power transfer source line corresponding to each simulated power transfer operation is determined. The candidate power transfer source line corresponding to the load status that meets the target condition is determined as the target power transfer source line of the corresponding load block. The reference power transfer source line is connected to the load block through the tie switch.

[0009] Load transfer is carried out based on all the aforementioned target power transfer source lines.

[0010] In some embodiments, the operating status information includes opening / closing status change signals and protection action signals, wherein the protection action signals correspond to protection action types. Determining the fault area based on the operating status information of each terminal device includes:

[0011] For any of the terminal devices, when the corresponding opening / closing status change signal and the protection action signal are received, and the opening / closing status change signal and the protection action type meet the fault conditions, a fault event is generated based on the opening / closing status change signal and the protection action type corresponding to the terminal device.

[0012] The fault area is determined based on the fault event.

[0013] In some embodiments, based on the device type and device status of each terminal device in the area to be transferred, the area to be transferred is divided into multiple load blocks, including:

[0014] Based on all the device types and device attributes, a reference device is determined from all the terminal devices in the area to be supplied, wherein the device type corresponding to the reference device is a switch and the corresponding device attribute is an automation device;

[0015] Using the reference device as the boundary, the area to be transferred is divided to obtain multiple load blocks.

[0016] In some embodiments, based on any of the load blocks, a plurality of candidate power transfer lines are determined from the corresponding reference power transfer lines, including:

[0017] For any of the reference power supply lines, the corresponding line reserve capacity and current load rate are determined based on the corresponding maximum operating load and current load;

[0018] The reference power supply line corresponding to the line reserve force being less than the preset reserve force and the current load rate being less than the preset load rate is determined as the candidate power supply line.

[0019] For each candidate power transfer source line, a priority is assigned to each candidate power transfer source line based on the corresponding line reserve capacity, the current load rate, and whether it is connected to the target electricity user.

[0020] Secondly, embodiments of this application provide a power distribution network system, including multiple terminal devices, and further including:

[0021] The unit for determining the area to be transferred to power distribution is used to determine the fault area based on the operating status information of each of the terminal devices, and to determine the area to be transferred to power distribution from the power distribution network system based on the fault area.

[0022] The load block partitioning unit is used to divide the area to be transferred into multiple load blocks based on the device type and device attributes of each terminal device in the area to be transferred.

[0023] The candidate power transfer source line determination unit is used to determine multiple candidate power transfer source lines from the corresponding reference power transfer source lines based on any one of the load blocks.

[0024] The target power transfer source line determination unit is used to simulate power transfer to the load block based on the switching status information of each candidate power transfer source line and the corresponding tie switch, and determine the load status of the candidate power transfer source line corresponding to each simulated power transfer operation, and determine the candidate power transfer source line corresponding to the load status that meets the target conditions as the target power transfer source line of the corresponding load block, wherein the reference power transfer source line is connected to the load block through the tie switch;

[0025] The load transfer execution unit is used to perform load transfer based on all of the target load transfer source lines.

[0026] In some embodiments, the operating status information includes a circuit breaker status change signal and a protection action signal, wherein the protection action signal corresponds to a protection action type, and the unit for determining the area to be transferred includes:

[0027] The fault event determination unit is used to generate a fault event based on the corresponding opening / closing status change signal and the protection action signal when it receives the corresponding opening / closing status change signal and the protection action type for any of the terminal devices, and the opening / closing status change signal and the protection action type meet the fault conditions.

[0028] The fault area determination unit is used to determine the fault area based on the fault event.

[0029] In some embodiments, the load block partitioning unit includes:

[0030] A reference device determination module is used to determine a reference device from all the terminal devices in the area to be transferred based on all the device types and the device attributes, wherein the device type corresponding to the reference device is a switch and the corresponding device attribute is an automation device;

[0031] The execution unit is used to divide the area to be transferred into multiple load blocks, with the reference device as the boundary.

[0032] In some embodiments, the candidate transfer source line determination unit includes:

[0033] The data acquisition unit is used to determine the corresponding line reserve capacity and current load rate for any of the reference power transfer source lines based on the corresponding maximum operating load and current load.

[0034] The data processing unit is used to determine the reference power supply line corresponding to the line reserve force being less than the preset reserve force and the current load rate being less than the preset load rate as the candidate power supply line.

[0035] The priority allocation unit is used to assign a priority to each candidate power transfer source line based on the corresponding line reserve capacity, the current load rate, and whether it is connected to the target power user.

[0036] Thirdly, embodiments of this application provide a control device, including at least one control processor and a memory for communicatively connecting to the at least one control processor; the memory stores instructions executable by the at least one control processor, which, when executed by the at least one control processor, enable the at least one control processor to perform the power distribution network load transfer method as described in the first aspect.

[0037] Fourthly, embodiments of this application also provide a computer-readable storage medium storing computer-executable instructions for performing the power distribution network load transfer method as described in the first aspect.

[0038] This application provides a method, system, device, and medium for load transfer in a power distribution network. The method includes: determining a fault area based on the operating status information of each terminal device; determining a region to be transferred from the power distribution network system based on the fault area; dividing the region to be transferred into multiple load blocks based on the device type and device attributes of each terminal device in the region to be transferred; determining multiple candidate transfer source lines from the corresponding reference transfer source lines for any load block; simulating load transfer for the load block based on the switching status information of each candidate transfer source line and the corresponding tie switch, and determining the load status of the candidate transfer source lines corresponding to each simulated transfer operation; determining the candidate transfer source lines corresponding to the load status that meet the target conditions as the target transfer source lines for the corresponding load block, wherein the reference transfer source lines are connected to the load block through the tie switch; and performing load transfer based on all the target transfer source lines. According to the solution provided in the embodiments of this application, the final load transfer scheme is formed by comprehensively considering multiple factors such as the load condition and equipment type of the equipment in the distribution network line. Compared with the existing scheme that only considers the large reserve capacity, this application can avoid secondary overload and resource imbalance after the load transfer operation, and ensure the operational reliability of the distribution network. Attached Figure Description

[0039] Figure 1 This is a flowchart of the steps of a power distribution network load transfer method provided in one embodiment of this application;

[0040] Figure 2 This is a line fault load transfer line diagram of a distribution network system provided in another embodiment of this application;

[0041] Figure 3 This is a structural diagram of a control device provided in another embodiment of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] It is understandable that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, or the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0044] Current distribution automation systems rely on simplified preset rules for load transfer strategies during power restoration in non-faulty areas. For example, they prioritize transferring power to tie lines with larger standby capacity. The load transfer decision-making process lacks comprehensive consideration of multi-dimensional operational factors such as the load distribution balance of lines in the distribution network and line priorities. Such load transfer schemes have low intelligence levels, making it difficult to ensure optimal load transfer and robustness. This can easily lead to insufficient resource utilization, load imbalance, and affect the operational reliability of the distribution network.

[0045] To address the aforementioned problems, this application provides a method, system, device, and medium for load transfer in a power distribution network. The method includes: determining a fault area based on the operating status information of each terminal device; determining a region to be transferred from the power distribution network system based on the fault area; dividing the region to be transferred into multiple load blocks based on the device type and device attributes of each terminal device in the region to be transferred; determining multiple candidate transfer source lines from a corresponding reference transfer source line for any load block; simulating load transfer for the load block based on the switching status information of each candidate transfer source line and the corresponding tie switch, and determining the load status of the candidate transfer source line corresponding to each simulated transfer operation; determining the candidate transfer source line corresponding to the load status that meets the target conditions as the target transfer source line for the corresponding load block, wherein the reference transfer source line is connected to the load block through the tie switch; and performing load transfer based on all the target transfer source lines. According to the solution provided in the embodiments of this application, the final load transfer scheme is formed by comprehensively considering multiple factors such as the load condition and equipment type of the equipment in the distribution network line. Compared with the existing scheme that only considers the large reserve capacity, this application can avoid secondary overload and resource imbalance after the load transfer operation, and ensure the operational reliability of the distribution network.

[0046] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0047] refer to Figure 1 , Figure 1 This is a flowchart illustrating the steps of a power distribution network load transfer method according to an embodiment of this application. This application provides a power distribution network load transfer method applied to a power distribution network system, which includes multiple terminal devices. The method includes, but is not limited to, the following steps:

[0048] Step S10: Determine the fault area based on the operating status information of each terminal device, and determine the area to be transferred from the power distribution network system based on the fault area.

[0049] It is understandable that the area to be transferred to another power source refers to the power-deprived area formed after a fault occurs in the distribution network system lines and is isolated by circuit breakers or automated switching equipment, disconnected from the main power supply but in a non-faulty state. Therefore, the area to be transferred to another power source needs to be determined based on the location of the fault in the distribution network system lines (i.e., the fault area) to provide effective support for subsequent load transfer.

[0050] Specifically, the running status information in this embodiment is a Kafka message.

[0051] Specifically, in some embodiments, the operating status information includes opening / closing status change signals and protection action signals, with the protection action signals corresponding to protection action types. Figure 1 Step S10, which determines the fault area based on the operating status information of each terminal device, includes, but is not limited to, the following steps:

[0052] Step S11: For any terminal device, when the corresponding opening / closing status change signal and protection action signal are received, and the opening / closing status change signal and protection action type meet the fault conditions, a fault event is generated based on the opening / closing status change signal and the protection action type corresponding to the terminal device.

[0053] Step S12: Determine the fault area based on the fault event.

[0054] Specifically, in this embodiment, the fault condition is that the opening / closing status change signal indicates that the circuit is open, and the protection action type is fault general, zero sequence protection, overcurrent protection, or instantaneous overcurrent protection.

[0055] It is understood that in this embodiment, whether a fault event in the distribution network system is generated is determined based on the real-time switching status change signals and protection action types sent by each terminal device. Specifically, when a switching status change signal and a protection action signal are received, and the switching status change signal indicates a switch opening, and the corresponding protection action type is overcurrent protection or instantaneous overcurrent protection, then the fault conditions are met, and a fault event is generated for that terminal device. If the switching status change signal indicates a switch opening, and the corresponding protection action type is a type other than fault general, zero-sequence protection, overcurrent protection, or instantaneous overcurrent protection, or the switching status change signal indicates a switch closing, or only one of the switching status change signal and the protection action signal is received, etc., all are considered as not meeting the fault conditions.

[0056] Furthermore, in this embodiment, upon receiving both the opening / closing status change signal and the protection action signal, if only the opening / closing status change signal indicates opening, or only the protection action type corresponding to the protection action signal is fault general, zero-sequence protection, overcurrent protection, or instantaneous overcurrent protection, a temporary fault record is created. Based on this temporary fault record, if no missing signal (opening / closing status change signal or protection action signal) is received within a preset time period, the temporary fault record is deleted. In other words, this embodiment's fault determination mechanism includes three aspects in determining the fault area: first, the determination of a formal fault event; second, temporary recording; and third, the timeout clearing of temporary records. This greatly improves the reliability and accuracy of fault initiation, effectively avoids malfunctions caused by signal interference or normal operation, and ensures that the automation system only functions during "real faults."

[0057] It is understood that the fault area determination of the distribution network system in this embodiment adopts a differentiated strategy based on equipment type. Specifically, current-type switches, primary and secondary integrated switches, user boundary switches, and fault indicators are triggered to operate based on valid fault signals. Simultaneously, the system verifies the validity of the fault signal and implements logical blocking for the following situations: equipment not in operation, fault signals that have not returned after timeout, fault signals that are suppressed, or equipment with test tags. When all determination conditions are met, the system can accurately locate the fault area and automatically initiate the division of load transfer area blocks, thereby generating a detailed transfer strategy.

[0058] Step S20: Based on the equipment type and equipment attributes of each terminal device in the area to be transferred, the area to be transferred is divided into multiple load blocks.

[0059] Understandably, dividing the area into multiple load blocks based on the equipment type and attributes of each terminal device in the area to be resupplied allows for the determination of the priority and load size of each load block. This enables more intelligent load resupplied allocation of existing resources. Furthermore, if all loads are a single large block, the inrush current during system recovery would be extremely high. By dividing the loads into multiple blocks, the system can disconnect each block from the backup power supply and then reconnect them to the main power supply one by one, achieving a soft start and avoiding impact on the power grid. In this way, the "one-size-fits-all" extensive recovery approach can be transformed into a "meticulous" intelligent recovery approach, thereby achieving refined, safe, and efficient power restoration.

[0060] Specifically, in some embodiments, Figure 1 Step S20 includes, but is not limited to, the following steps:

[0061] Step S21: Based on all device types and device attributes, determine reference devices from all terminal devices in the area to be transferred, wherein the device type corresponding to the reference device is a switch and the corresponding device attribute is an automation device.

[0062] Step S22: Using the reference device as the boundary, divide the area to be transferred to obtain multiple load blocks.

[0063] Understandably, in this embodiment, based on the information about the devices to be transferred in the Kafka messages sent by each terminal device, the device type and attributes of each terminal device in the area to be transferred can be determined. The division of load blocks needs to comprehensively consider the real-time operating status of the relevant devices, including whether the switch is in manual operation mode, whether there are maintenance or prohibition of operation signs (label information), whether the terminal communication is online, etc., to ensure that the division result conforms to the actual operating conditions. Based on the device type and device attributes of each terminal device in the area to be transferred, the specific method of dividing the area to be transferred into multiple load blocks is as follows: from all the terminal devices in the area to be transferred, determine the reference devices whose device type is switch and whose corresponding device attribute is automation equipment, and divide the area to be transferred into several load block units that can be independently transferred. The core purpose of the system's division of load blocks is that each load block can be independently switched (added or removed) by remotely operating these boundary switches, thereby creating more and more flexible "control points" for the system, so that the load can be finely divided and restored in case of failure.

[0064] In some embodiments, such as Figure 2 As shown, a fault has occurred on line A, and the fault area is located within the area enclosed by load switches SW2 and SW3, where SW5 and SW9 are manual switches. Based on the current network topology and equipment status, the system divides the area to be transferred into several load blocks, as shown in Table 1.

[0065] Table 1. Load Block Division of Areas to be Transferred

[0066]

[0067]

[0068] Step S30: Based on any load block, determine multiple candidate power transfer lines from the corresponding reference power transfer line.

[0069] Specifically, in some embodiments, Figure 1 Step S30 includes, but is not limited to, the following steps:

[0070] Step S31: For any reference power source line, determine the corresponding line reserve capacity and current load rate based on the corresponding maximum operating load and current load;

[0071] Step S32: The reference power supply line corresponding to the line reserve force is less than the preset reserve force and the current load rate is less than the preset load rate is determined as the candidate power supply line.

[0072] Step S33: For each candidate power transfer source line, priority is assigned to each candidate power transfer source line based on the corresponding line reserve capacity, current load rate, and whether it is connected to the target electricity user.

[0073] It is understandable that a single fault event can create multiple independent areas awaiting power transfer. Each area needs to find its own power transfer path and power source. Therefore, in this embodiment, to select a suitable power transfer source line for each load block, the line reserve capacity and load rate of the multiple available reference power transfer source lines are first determined to see if the power transfer conditions are met. Specifically, for any reference power transfer source line, the corresponding line reserve capacity and current load rate are determined based on the corresponding maximum operating load and current load. Reference power transfer source lines with line reserve capacity less than a preset reserve capacity and current load rate less than a preset load rate are identified as candidate power transfer source lines. Then, for each candidate power transfer source line, priority is assigned based on the corresponding line reserve capacity, current load rate, and whether it connects to the target electricity user, providing effective support for subsequently determining the most suitable target power transfer source line for the load block.

[0074] Specifically, the target electricity users in this embodiment correspond to important electricity users, such as hospitals and water pumping stations. The candidate power supply lines connecting these electricity users have higher priority and are switched on and off first.

[0075] It should be noted that in this embodiment, the priority value range for the candidate transfer source lines is 0-10, with a higher value indicating a higher transfer priority. Figure 2 The diagram showing the line fault load transfer route is illustrated, and the priorities of each candidate transfer source line are shown in Table 2. When the priority is set to 0, it indicates that the transfer source is prohibited from providing transfer power to the target line. This is often used to avoid power sources that do not meet the transfer conditions (such as excessive line load or insufficient power supply capacity). By configuring priorities appropriately, a reasonable transfer plan can be quickly generated to restore power to non-faulty areas when a feeder fault occurs.

[0076] Table 2 Priority Configuration Table for Supply Source Lines to be Transferred

[0077]

[0078]

[0079] It should be noted that the method for determining the corresponding line reserve capacity and current load rate based on the maximum operating load and current load of the reference transfer source line in this embodiment is as follows: (1) The line reserve capacity is the difference between the maximum operating load and the current load. (2) The current load rate is the ratio of the current load to the maximum operating load.

[0080] Step S40: Based on the switching status information of each candidate transfer source line and the corresponding tie switch, simulate the transfer of power to the load block, and determine the load status of the candidate transfer source line corresponding to each simulated transfer operation. The candidate transfer source line corresponding to the load status that meets the target conditions is determined as the target transfer source line of the corresponding load block. The reference transfer source line is connected to the load block through the tie switch.

[0081] Understandably, this embodiment simulates power transfer for each load block to be transferred, taking into account the status of the tie switch and available power transfer sources. During each power transfer simulation, the load condition of the power transfer source line is assessed to ensure that no heavy load or overload occurs. If the safety constraints (i.e., the target conditions) are met, meaning there is no heavy overload, the power transfer path and the resulting scheme information are retained. If the safety constraints are not met, meaning there is a heavy overload, the power transfer source line is determined not to be a power transfer source. Based on this screening mechanism, a safe and feasible regional block power transfer scheme is ultimately generated.

[0082] Step S50: Load transfer is performed based on all target transfer source lines.

[0083] It is understandable that after determining the target power transfer source line for each load block, load transfer is performed based on the corresponding tie switch in each load block. For example, this embodiment targets... Figure 2 The operation steps for the load transfer of the corresponding area block in the line diagram are as follows: SW2 control (power supply side isolation) -> FCB1 control (power supply side power restoration) -> SW3 control (load side isolation) -> SW7 control (load side power restoration) -> SW4 control (load side power restoration) -> SW11 control (load side power restoration).

[0084] Understandably, in this embodiment, after a feeder fault occurs, the system divides the area to be transferred into multiple load blocks, using the line automation equipment as the boundary and combining equipment information, user priority, and load rate. Taking into account factors such as the available capacity (reserve capacity), load level, and power supply priority of each interconnecting line, the system comprehensively evaluates and optimizes different transfer source paths. Based on these considerations, it automatically selects the transfer scheme that meets safety constraints, load balancing, prioritizes important users, and achieves the best overall efficiency. Compared to traditional distribution automation systems that make transfer decisions solely based on reserve capacity, this embodiment improves the precision and intelligence of load transfer, effectively avoiding secondary overloads and resource imbalances, and enhancing the self-healing capability and operational reliability of the distribution network.

[0085] In addition, embodiments of this application also disclose a power distribution network system, which includes multiple power distribution network systems and further includes:

[0086] The area to be transferred is determined by the unit, which is used to determine the fault area based on the operating status information of each terminal device, and to determine the area to be transferred from the distribution network system based on the fault area.

[0087] The load block partitioning unit is used to divide the area to be transferred into multiple load blocks based on the equipment type and equipment attributes of each terminal device in the area to be transferred.

[0088] The candidate power transfer source line determination unit is used to determine multiple candidate power transfer source lines from the corresponding reference power transfer source lines based on any load block.

[0089] The target transfer source line determination unit is used to simulate the transfer of load blocks based on the switching status information of each candidate transfer source line and the corresponding tie switch, and to determine the load status of the candidate transfer source line corresponding to each simulated transfer operation. The candidate transfer source line corresponding to the load status that meets the target conditions is determined as the target transfer source line of the corresponding load block. The reference transfer source line is connected to the load block through the tie switch.

[0090] The load transfer execution unit is used to perform load transfer based on all target load transfer source lines.

[0091] In some embodiments, the operating status information includes a circuit breaker status change signal and a protection action signal, wherein the protection action signal corresponds to a protection action type, and the unit for determining the area to be transferred includes:

[0092] The fault event determination unit is used to generate a fault event based on the corresponding opening / closing status change signal and the protection action signal when it receives the corresponding opening / closing status change signal and the protection action type for any terminal device, and the opening / closing status change signal and the protection action type meet the fault conditions.

[0093] The fault area determination unit is used to determine the fault area based on the fault event.

[0094] In some embodiments, the load block partitioning unit includes:

[0095] The reference device determination module is used to determine the reference device from all terminal devices in the area to be transferred based on all device types and device attributes. The reference device is a switch and its corresponding device attribute is an automation device.

[0096] The execution unit is used to divide the area to be transferred into multiple load blocks, with the reference device as the boundary.

[0097] In some embodiments, the candidate transfer source line determination unit includes:

[0098] The data acquisition unit is used to determine the corresponding line reserve capacity and current load rate for any reference power source line based on the corresponding maximum operating load and current load.

[0099] The data processing unit is used to identify reference power supply lines that have a line reserve capacity less than a preset reserve capacity and a current load rate less than a preset load rate as candidate power supply lines.

[0100] The priority allocation unit is used to assign priority to each candidate power transfer source line based on the corresponding line reserve capacity, current load rate, and whether it is connected to the target electricity user.

[0101] It should be noted that the specific implementation methods of the distribution network system are basically the same as the specific implementation methods of the above-mentioned distribution network load transfer methods, and will not be repeated here.

[0102] like Figure 3 As shown, Figure 3 This is a structural diagram of a control device provided in one embodiment of this application. The present invention also provides a control device 300, comprising:

[0103] The processor 310 can be implemented using a general-purpose central processing unit (CPU), microprocessor, application specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0104] The memory 320 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 320 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 320 and called and executed by the processor 310 to execute the power distribution network load transfer method of the embodiments of this application.

[0105] Input / output interface 330 is used to realize information input and output;

[0106] The communication interface 340 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0107] Bus 350 transmits information between various components of the device (e.g., processor 310, memory 320, input / output interface 330, and communication interface 340);

[0108] The processor 310, memory 320, input / output interface 330 and communication interface 340 are connected to each other within the device via bus 350.

[0109] In addition, this application also provides an electronic device, including the control device 300 described in the above embodiments.

[0110] In addition, this application embodiment also provides a storage medium, which is a computer-readable storage medium, storing a computer program that, when executed by a processor, implements the above-described distribution network load transfer method.

[0111] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate, and may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0112] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0113] The above provides a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A method for transferring load in a power distribution network, characterized in that, Applied to a power distribution network system, the power distribution network system including multiple terminal devices, the method includes: Based on the operating status information of each terminal device, the fault area is determined, and based on the fault area, the area to be transferred to the power distribution network system is determined. Based on the equipment type and equipment attributes of each terminal device in the area to be transferred, the area to be transferred is divided into multiple load blocks; Based on any of the load blocks, multiple candidate power transfer lines are determined from the corresponding reference power transfer lines; Based on the switching status information of each candidate power transfer source line and the corresponding tie switch, the load block is simulated for power transfer, and the load status of the candidate power transfer source line corresponding to each simulated power transfer operation is determined. The candidate power transfer source line corresponding to the load status that meets the target condition is determined as the target power transfer source line of the corresponding load block. The reference power transfer source line is connected to the load block through the tie switch. Load transfer is carried out based on all the aforementioned target power transfer source lines.

2. The distribution network load transfer method according to claim 1, characterized in that, The operational status information includes opening / closing status change signals and protection action signals. Each protection action signal corresponds to a protection action type. Based on the operational status information of each terminal device, the fault area is determined, including: For any of the terminal devices, when the corresponding opening / closing status change signal and the protection action signal are received, and the opening / closing status change signal and the protection action type meet the fault conditions, a fault event is generated based on the opening / closing status change signal and the protection action type corresponding to the terminal device. The fault area is determined based on the fault event.

3. The distribution network load transfer method according to claim 1, characterized in that, Based on the device type and status of each terminal device in the area to be supplied, the area to be supplied is divided into multiple load blocks, including: Based on all the device types and device attributes, a reference device is determined from all the terminal devices in the area to be supplied, wherein the device type corresponding to the reference device is a switch and the corresponding device attribute is an automation device; Using the reference device as the boundary, the area to be transferred is divided to obtain multiple load blocks.

4. The distribution network load transfer method according to claim 1, characterized in that, Based on any of the load blocks, multiple candidate power transfer lines are determined from the corresponding reference power transfer lines, including: For any of the reference power supply lines, the corresponding line reserve capacity and current load rate are determined based on the corresponding maximum operating load and current load; The reference power supply line corresponding to the line reserve force being less than the preset reserve force and the current load rate being less than the preset load rate is determined as the candidate power supply line. For each candidate power transfer source line, a priority is assigned to each candidate power transfer source line based on the corresponding line reserve capacity, the current load rate, and whether it is connected to the target electricity user.

5. A power distribution network system, characterized in that, Including multiple terminal devices, and also: The unit for determining the area to be transferred to power distribution is used to determine the fault area based on the operating status information of each of the terminal devices, and to determine the area to be transferred to power distribution from the power distribution network system based on the fault area. The load block partitioning unit is used to divide the area to be transferred into multiple load blocks based on the device type and device attributes of each terminal device in the area to be transferred. The candidate power transfer source line determination unit is used to determine multiple candidate power transfer source lines from the corresponding reference power transfer source lines based on any one of the load blocks. The target power transfer source line determination unit is used to simulate power transfer to the load block based on the switching status information of each candidate power transfer source line and the corresponding tie switch, and determine the load status of the candidate power transfer source line corresponding to each simulated power transfer operation, and determine the candidate power transfer source line corresponding to the load status that meets the target conditions as the target power transfer source line of the corresponding load block, wherein the reference power transfer source line is connected to the load block through the tie switch; The load transfer execution unit is used to perform load transfer based on all of the target load transfer source lines.

6. The power distribution network system according to claim 5, characterized in that, The operating status information includes opening / closing status change signals and protection action signals, wherein the protection action signals correspond to protection action types, and the unit for determining the area to be transferred includes: The fault event determination unit is used to generate a fault event based on the corresponding opening / closing status change signal and the protection action signal when it receives the corresponding opening / closing status change signal and the protection action type for any of the terminal devices, and the opening / closing status change signal and the protection action type meet the fault conditions. The fault area determination unit is used to determine the fault area based on the fault event.

7. The power distribution network system according to claim 5, characterized in that, The load block partitioning unit includes: A reference device determination module is used to determine a reference device from all the terminal devices in the area to be transferred based on all the device types and the device attributes, wherein the device type corresponding to the reference device is a switch and the corresponding device attribute is an automation device; The execution unit is used to divide the area to be transferred into multiple load blocks, with the reference device as the boundary.

8. The power distribution network system according to claim 5, characterized in that, The candidate power supply line determination unit includes: The data acquisition unit is used to determine the corresponding line reserve capacity and current load rate for any of the reference power transfer source lines based on the corresponding maximum operating load and current load. The data processing unit is used to determine the reference power supply line corresponding to the line reserve force being less than the preset reserve force and the current load rate being less than the preset load rate as the candidate power supply line. The priority allocation unit is used to assign a priority to each candidate power transfer source line based on the corresponding line reserve capacity, the current load rate, and whether it is connected to the target power user.

9. A control device, characterized in that, It includes at least one control processor and a memory for communicatively connecting to the at least one control processor; the memory stores instructions executable by the at least one control processor, which, when executed by the at least one control processor, enable the at least one control processor to perform the power distribution network load transfer method as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the power distribution network load transfer method as described in any one of claims 1 to 4.

Images