A method, device, distribution terminal and storage medium for low-voltage power distribution network control.

Abstract

This invention discloses a low-voltage distribution network control method, device, distribution terminal, and storage medium. The low-voltage distribution network control method includes: acquiring path information and rated current information along the path corresponding to sub-control nodes in each initial sub-control area of ​​the low-voltage distribution network; determining the centrality correlation of the sub-control nodes; dividing the low-voltage distribution network into at least one hierarchical control area according to its organizational structure; determining the number of sub-control nodes required for each hierarchical control area; determining the target sub-control area based on the centrality correlation and the number of sub-control nodes; and further controlling the low-voltage distribution network based on the predicted power output and regional power consumption of the target sub-control area. This invention decentralizes decision-making control to a certain extent within the low-voltage distribution network, balancing the load situation and achieving a relatively balanced state between load and power supply, thus realizing local autonomy.

Description

Technical Field

[0001] This invention relates to the field of power distribution network control technology, and in particular to a low-voltage power distribution network control method, device, power distribution terminal and storage medium. Background Technology

[0002] Traditional existing distribution networks employ a centralized control strategy, where all measurement data is uploaded to the distribution network decision terminal at a certain frequency. The decision terminal then processes the collected data and performs centralized control. However, with continuous technological advancements and increased emphasis on energy conservation and emission reduction, the number of actively connected loads such as charging piles and energy storage is increasing. Furthermore, the growing electricity demand and the rapid expansion of the number of devices in the distribution network necessitate the unified uploading of massive amounts of data to the distribution network decision terminal for calculation, control, and decision-making. Clearly, relying solely on the distribution network decision terminal is insufficient to handle the computation of such massive amounts of operational data, which would negatively impact the efficiency and accuracy of decision-making and control.

[0003] On the other hand, each region of the distribution network has its own characteristics during peak electricity consumption periods. At the same time, some regions also have distributed energy sources such as renewable energy. The output of renewable energy is not constant and has certain variation patterns. When a concurrent power source is integrated into the distribution network, if the energy it produces cannot be used reasonably, it will cause certain transportation and storage losses, such as the loss of energy storage containers (self-discharge rate). Existing distribution networks have relatively few measures for this part. Summary of the Invention

[0004] This invention provides a low-voltage distribution network control method, device, distribution terminal, and storage medium to solve the problem of untimely response in traditional centralized control of low-voltage distribution networks.

[0005] According to one aspect of the present invention, a low-voltage distribution network control method is provided, the low-voltage distribution network control method comprising:

[0006] Obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information;

[0007] Based on the organizational structure of the low-voltage distribution network, at least one hierarchical control area is divided, and the number of sub-control nodes required for each hierarchical control area is determined.

[0008] The target sub-control area is determined based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area;

[0009] The low-voltage distribution network is regulated based on the predicted power output and regional power consumption of the target sub-control area.

[0010] Optionally, the number of sub-control nodes required for each of the said hierarchical control regions is determined, including:

[0011] Based on the number of edges in each hierarchical control region and the number of corresponding sub-control nodes, and in conjunction with the number of hierarchical control regions, determine the number of sub-control nodes required for each hierarchical control region.

[0012] Optionally, the target sub-control region is determined based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control region, including:

[0013] When the number of sub-control nodes required for the hierarchical control region is 1, the target sub-control region is determined by adding one sub-control node to the sub-control node with the highest central relevance in the hierarchical control region.

[0014] When the number of sub-control nodes required for the hierarchical control region is greater than 1, the hierarchical control region is determined as the target sub-control region after adding at least two sub-control nodes.

[0015] Optionally, after adding at least two sub-control nodes to the hierarchical control area and determining it as the target sub-control area, the method further includes:

[0016] Select the sub-control node with the highest central relevance in the target sub-control region and add a sub-control node. Then, traverse the other sub-control nodes in the target sub-control region with the sub-control node with the highest central relevance as the root node.

[0017] Determine whether the number of sub-control nodes already added in the target sub-control region is less than the number of sub-control nodes required for the corresponding hierarchical control region. If so, reselect the sub-control node with the highest center relevance in the target sub-control region. If not, the addition of sub-control nodes in the target sub-control region has been completed.

[0018] Optionally, the low-voltage distribution network control method further includes:

[0019] Determine whether all sub-control nodes have been added to each target sub-control area. If so, determine the number of sub-control nodes contained in the target sub-control area. If not, redetermine the target sub-control area.

[0020] Optionally, after traversing other sub-control nodes in the target sub-control region with the sub-control node having the highest central relevance as the root node, the method further includes:

[0021] If the sub-control node needs to change its target sub-control area, then according to the target function for dividing the control area of ​​the sub-control node, the target sub-control area to which the sub-control node belongs is changed from the current target sub-control area to the next target sub-control area.

[0022] Optionally, the low-voltage distribution network is regulated based on the predicted power output and regional power consumption of the target sub-control area, including:

[0023] If the power load of the target sub-control area exceeds the preset power load based on the predicted power output and regional power consumption of the target sub-control area, a request signal is sent to other target sub-control areas.

[0024] According to another aspect of the present invention, a low-voltage distribution network control device is provided, the low-voltage distribution network control device comprising:

[0025] The center correlation calculation module is used to obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information.

[0026] The sub-control node number determination module is used to divide at least one hierarchical control area according to the organizational structure of the low-voltage distribution network, and determine the number of sub-control nodes required for each hierarchical control area.

[0027] The target sub-control area determination module is used to determine the target sub-control area based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area.

[0028] The low-voltage distribution network control module is used to control the low-voltage distribution network based on the predicted power output and regional power consumption of the target sub-control area.

[0029] According to another aspect of the present invention, a power distribution terminal is provided, the power distribution terminal comprising:

[0030] At least one processor; and

[0031] A memory communicatively connected to the at least one processor; wherein,

[0032] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the low-voltage distribution network control method according to any embodiment of the present invention.

[0033] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the low-voltage distribution network control method according to any embodiment of the present invention.

[0034] The technical solution of this invention provides a method for organizing and controlling a low-voltage distribution network. It decentralizes decision-making and control to a certain extent to the low-voltage distribution network, which can solve the problem of untimely response in the traditional centralized control of low-voltage distribution networks. At the same time, based on the characteristics of active loads and distributed power sources, the low-voltage distribution network can perform topology self-regulation and self-adaptation, make full use of renewable energy sources such as wind power, balance the load of the low-voltage distribution network, and achieve a relatively balanced state between load and power supply, thus realizing local autonomy.

[0035] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart of a low-voltage distribution network control method provided in Embodiment 1 of the present invention;

[0038] Figure 2 This is a flowchart of a low-voltage distribution network control method according to Embodiment 2 of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of a low-voltage distribution network control device according to Embodiment 3 of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of a power distribution terminal for implementing the low-voltage power distribution network control method of this invention. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "initial," "target," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Example 1

[0044] Figure 1 This is a flowchart of a low-voltage distribution network control method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where autonomous local adaptive control of the low-voltage distribution network topology is achieved based on sub-control areas of the low-voltage distribution network. This low-voltage distribution network control method can be executed by a low-voltage distribution network control device, which can be implemented in hardware and / or software. This low-voltage distribution network control device can be configured in the required distribution terminals of the low-voltage distribution network. Figure 1 As shown, the low-voltage distribution network control method includes:

[0045] S110. Obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information.

[0046] The low-voltage distribution network is divided to a certain extent, namely, the low-voltage distribution network includes multiple initial sub-control areas. All initial sub-control areas are uniformly controlled by the distribution network decision terminal. Each initial sub-control area can independently perform information calculation, decision-making, information transmission within its jurisdiction, and communication between adjacent sub-control centers. This can greatly reduce the pressure on the distribution network decision terminal and improve the efficiency and reliability of decision-making and operation.

[0047] A sub-control node is set at the center of each initial sub-control area, enabling communication and coordination between multiple initial sub-control areas and between each initial sub-control area and the sub-control node.

[0048] In this embodiment, the centrality of a sub-control node represents the transmission relevance of each sub-control node relative to the entire link. The higher the centrality of a sub-control node, the more important the location of the sub-control node is for data transmission and decision-making.

[0049] There are two factors that affect the centrality of a sub-control node. One is the number of shortest paths passing through the sub-control node (the number of shortest paths from the root node distribution network decision terminal to all sub-control nodes that pass through the sub-control node), which is the path information corresponding to the sub-control node. The other is the rated current of the switch (equipment in the low-voltage distribution network) closest to the sub-control node on the path where the sub-control node is located, which is the rated current information of the sub-control node on the path. When the rated current near the sub-control node is large, it indicates that the load capacity at that location is strong. At the same time, the load is also related to the number of equipment. When there are many equipment in the load, even if the total rated current is large, it will be relatively small when distributed to each load.

[0050] For each path, the more sub-control nodes on the path, the smaller the role of each sub-control node on that path (the initial sub-control area traversed is large, and the low-voltage distribution network density is low; when the low-voltage distribution network density is low, there is no need to set up an initial sub-control area). The formula for calculating the central relevance of each sub-control node q in the low-voltage distribution network is as follows; please refer to the formula below for details:

[0051]

[0052] Where n represents all shortest paths, and i represents the i-th shortest path. This indicates whether the i-th path passes through this sub-control node. A value of 1 indicates that the process does not pass through this sub-control node. The value is 0. This indicates the number of sub-control nodes on the shortest path. j represents the j-th switch passed through, and m represents all the nearest switches passed through sub-control node q. Let represent the k-th load connected to switch j, and t represent the total number of loads connected to switch j. This represents the current in the load k. This represents the current in the sub-control node q.

[0053] S120. Divide at least one hierarchical control area according to the organizational structure of the low-voltage distribution network, and determine the number of sub-control nodes required for each hierarchical control area.

[0054] In this context, a hierarchical control area refers to a level within the distribution network organizational structure. Within this structure, there are multiple levels from the hierarchical control area to the feeders of the distribution network substations. First, the density d of each hierarchical control area is calculated, using the following formula:

[0055]

[0056] Where p represents the number of edges in the hierarchical control region, l represents the number of sub-control nodes, and the larger the density d of the hierarchical control region, the denser the hierarchical control region.

[0057] The number of edges in the hierarchical control area refers to the number of lines connecting the sub-control nodes in the distribution network's organizational structure.

[0058] Furthermore, in this embodiment, the number of sub-control nodes that need to be set for each level of control area is determined. The specific calculation formula is as follows:

[0059]

[0060] in, The value represents the density of the current hierarchical control area, r represents the number of hierarchical control areas, and the denominator represents the average density of hierarchical control areas in the entire distribution network.

[0061] S130. Determine the target sub-control area based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area.

[0062] The target sub-control area is the area that has been finally divided after coordination. The number of corresponding sub-control nodes and their locations have been determined in the target sub-control area.

[0063] Based on the above embodiments, when the number of sub-control nodes required for the hierarchical control region is 1, the target sub-control region is determined by adding one sub-control node to the sub-control node with the highest center relevance in the hierarchical control region; when the number of sub-control nodes required for the hierarchical control region is greater than 1, the target sub-control region is determined by adding at least two sub-control nodes to the hierarchical control region.

[0064] Specifically, when the required number of sub-control nodes for this level of control area When the value is 1, a sub-control node is added to the sub-control point with the highest central correlation in the control area at this level, thus obtaining the target sub-control area.

[0065] When the required number of sub-control nodes in this level of control area When the value is greater than 1, multiple sub-control nodes need to be added to this level of control area to obtain the target sub-control area. Further, first, select the sub-control node with the highest central relevance to add a sub-control node, then use it as the root node for a breadth-first traversal to find the sub-control nodes it controls; the number of sub-control nodes is l / .

[0066] Based on the above, when a traversed sub-control node has been added to a certain level of control region, the objective function is used to calculate which level of control region the sub-control node should be added to to minimize losses and communication distance, and then the level of control region to which the sub-control node belongs is adjusted.

[0067]

[0068] in, This represents the line loss after passing through the j-th switch; This represents the communication distance between j switches on the i-th path.

[0069] in, Sum the communication distances between all switches from j=1 to j=s.

[0070] Furthermore, if the sub-control node needs to change its hierarchical control region, then the association between the sub-control node and the sub-control nodes that have been added to the original hierarchical control region is terminated, and the hierarchical control region to which the sub-control node belongs is re-determined according to the above steps. This process is repeated iteratively until the division of hierarchical control regions is finally determined, and the target sub-control region is obtained.

[0071] S140. The low-voltage distribution network is regulated based on the predicted power output and power consumption of the target sub-control area.

[0072] Specifically, after the hierarchical control area is divided, target sub-control areas are obtained. The static topology of each target sub-control area is determined. In the actual operation of the distribution network, it is not static but dynamically and adaptively adjusted according to the power load. When the power load of a target sub-control area is too high, the sub-control nodes of that target sub-control area can send request signals to the target sub-control areas corresponding to other sub-control nodes. When distributed power sources directly supply power on the low-voltage side, due to the instability of power supply, when the capacity of a target sub-control area is large, it can send request signals to the target sub-control areas corresponding to other sub-control nodes to coordinate the excess power. If this part of the power is transmitted to the target sub-control area, then the path traversed by this part of the power is dynamically divided into the topology of the target sub-control area in this coordination. After the coordination is completed, the division ends, thereby achieving the goal of full utilization of resources.

[0073] The technical solution of this invention divides the entire distribution network into multiple regions based on the hierarchy of the sub-control nodes and the energy and load characteristics of their respective regions. A sub-control node for that region is established at the center of each region. Multiple regions can communicate with each other, and regions and control centers can communicate with each other. This strategy can distribute the communication and computing pressure of the distribution network decision terminal to each sub-control center. At the same time, each sub-control node will also transmit relevant information to the distribution network decision terminal at regular intervals to ensure the overall control of the distribution network.

[0074] To improve the coordination capabilities of distribution network decision terminals and reduce the communication and computational burden on sub-control nodes, local sub-control nodes are deployed for local computation and regulation. This enhances the intelligence of the distribution network, enabling each sub-control area to achieve a certain degree of autonomy. Furthermore, it allows for coordination between different areas based on the electricity consumption and transmission characteristics at different times, thereby improving resource utilization and system stability.

[0075] Example 2

[0076] Figure 2 This is a flowchart of a low-voltage distribution network control method provided in Embodiment 2 of the present invention. Based on this embodiment, it further details how to autonomously control and coordinate the number and location of sub-control nodes. Figure 2 As shown, the low-voltage distribution network control method includes:

[0077] S210. Obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information.

[0078] S211. Divide at least one hierarchical control area according to the organizational structure of the low-voltage distribution network, and determine the number of sub-control nodes required for each hierarchical control area.

[0079] Specifically, at least one hierarchical control area is divided according to the organizational structure of the low-voltage distribution network, and the number of sub-control nodes required for each hierarchical control area is determined based on the number of sides of each hierarchical control area and the number of corresponding sub-control nodes, combined with the number of hierarchical control areas.

[0080] S212. Determine whether the number of sub-control nodes required for the hierarchical control area is greater than 1. If yes, proceed to step S213; otherwise, proceed to step S214.

[0081] S213. After adding at least two sub-control nodes to the hierarchical control area, determine it as the target sub-control area and execute step S215.

[0082] S214. After adding a sub-control node to the sub-control node with the highest central relevance in the hierarchical control area, it is determined as the target sub-control area.

[0083] S215. Select the sub-control node with the highest central relevance in the target sub-control region and add a sub-control node. Use the sub-control node with the highest central relevance as the root node to traverse other sub-control nodes in the target sub-control region and execute step S216.

[0084] S216. Determine whether sub-control node i has been traversed and is outside the control range of the target sub-control area. If yes, proceed to step S217; otherwise, proceed to step S218.

[0085] S217. If the sub-control node needs to change its target sub-control area, then according to the target function for dividing the control area of ​​the sub-control node, the target sub-control area to which the sub-control node belongs is changed from the current target sub-control area to the next target sub-control area.

[0086] S218. The control range of sub-control node i in the target sub-control area, execute step S219.

[0087] S219. Determine whether the number of sub-control nodes added in the target sub-control area is greater than the number of sub-control nodes required by the corresponding hierarchical control area. If yes, proceed to step S220; otherwise, proceed to step S215.

[0088] S220. Determine whether the target sub-control area has completed the addition of sub-control nodes. If yes, proceed to step S215; otherwise, proceed to step S221.

[0089] S221. Determine whether the target sub-control area has completed the addition of sub-control nodes. If yes, proceed to step S222; otherwise, proceed to step S211.

[0090] S222. When it is determined that the power load of the target sub-control area exceeds the preset power load based on the predicted power output and regional power consumption of the target sub-control area, a request signal is sent to other target sub-control areas.

[0091] In one embodiment, the daily output of the distributed power source is predicted at regular intervals by the sub-control nodes. Specifically, the net daily output of the distributed power source is the difference between the generated electricity and the electricity consumed for storage, transmission, etc. Therefore, the relevant factors include weather (daily wind speed), the load of the target sub-control area on that day (if there is excess electricity generated, there will be storage losses), and the active power and reactive power in the target sub-control area.

[0092] For example, in this case, a backpropagation (BP) neural network is used for prediction. The input parameters are the active power, reactive power, daily wind speed, rainfall, maximum current, transmission distance, whether it is a holiday, daily temperature, humidity, and the electricity consumed by actively connected loads within the target sub-control area. Since BP neural networks have a local minima problem, empirical formulas are used to improve the convergence speed and solve the minima problem. The number of hidden layer neurons is calculated, where v represents the number of input layer neurons (optional, v can be 10), b represents the number of output layer neurons (optional, b can be 2), and a is any integer between 1 and 10. After multiple experiments, it was found that the BP neural network has the best prediction effect when a is 2. In other words, after multiple experiments, selecting 5 hidden layer neurons has the best prediction effect.

[0093] In another embodiment, electricity is allocated based on the predicted daily output. There are three possible scenarios, detailed in the following formula:

[0094]

[0095] in, This represents the net electricity demand within the target sub-control area. This represents the predicted output, and S represents the average power supply of conventional power lines (when the line pressure is low, the goal is for distributed power sources to share the power supply pressure and improve resource utilization). Indicates the predicted consumption. This indicates the prediction tolerance error.

[0096] when When supply and demand are in balance, there is no coordinated action.

[0097] when When the target sub-control area receives a request for coordination signal from a neighboring target sub-control area, it will respond to the request. The priority of the request for coordination signal is higher than that of the active query. If not, the target sub-control area will send a request signal to other target sub-control areas around it (sent to its neighboring target sub-control areas in sequence according to the shortest communication path) to inquire whether power supply coordination is required.

[0098] when At this time, the target sub-control area sends a request signal to other target sub-control areas to accept power supply coordination. At this time, the power supply path topology of the target sub-control area is also dynamically assigned to the assisted target sub-control area.

[0099] when When the target sub-control area is under high power supply pressure, if the target sub-control area receives a coordination inquiry signal from other target sub-control areas, it sends a coordination acceptance signal; otherwise, it sends a coordination request signal to its adjacent target sub-control areas in sequence according to the shortest communication path.

[0100] Example 3

[0101] Figure 3 This is a schematic diagram of a low-voltage distribution network control device provided in Embodiment 3 of the present invention. Figure 3 As shown, the low-voltage distribution network control device includes:

[0102] The center correlation calculation module 310 is used to obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information.

[0103] The sub-control node number determination module 320 is used to divide at least one hierarchical control area according to the organizational structure of the low-voltage distribution network, and determine the number of sub-control nodes required for each hierarchical control area.

[0104] The target sub-control area determination module 330 is used to determine the target sub-control area based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area;

[0105] The low-voltage distribution network control module 340 is used to control the low-voltage distribution network based on the predicted power output and regional power consumption of the target sub-control area.

[0106] Optionally, the number of sub-control nodes required for each of the said hierarchical control regions is determined, including:

[0107] Based on the number of edges in each hierarchical control region and the number of corresponding sub-control nodes, and in conjunction with the number of hierarchical control regions, determine the number of sub-control nodes required for each hierarchical control region.

[0108] Optionally, the target sub-control area determination module 330 includes:

[0109] When the number of sub-control nodes required for the hierarchical control region is 1, the target sub-control region is determined by adding one sub-control node to the sub-control node with the highest central relevance in the hierarchical control region.

[0110] When the number of sub-control nodes required for the hierarchical control region is greater than 1, the hierarchical control region is determined as the target sub-control region after adding at least two sub-control nodes.

[0111] Optionally, the low-voltage distribution network control device further includes:

[0112] Select the sub-control node with the highest central relevance in the target sub-control region and add a sub-control node. Then, traverse the other sub-control nodes in the target sub-control region with the sub-control node with the highest central relevance as the root node.

[0113] Determine whether the number of sub-control nodes already added in the target sub-control region is less than the number of sub-control nodes required for the corresponding hierarchical control region. If so, reselect the sub-control node with the highest center relevance in the target sub-control region. If not, the addition of sub-control nodes in the target sub-control region has been completed.

[0114] Optionally, the low-voltage distribution network control device further includes:

[0115] Determine whether all sub-control nodes have been added to each target sub-control area. If so, determine the number of sub-control nodes contained in the target sub-control area. If not, redetermine the target sub-control area.

[0116] Optionally, after traversing other sub-control nodes in the target sub-control region with the sub-control node having the highest central relevance as the root node, the method further includes:

[0117] If the sub-control node needs to change its target sub-control area, then according to the target function for dividing the control area of ​​the sub-control node, the target sub-control area to which the sub-control node belongs is changed from the current target sub-control area to the next target sub-control area.

[0118] Optionally, the low-voltage distribution network control module 340 is specifically used for:

[0119] If the power load of the target sub-control area exceeds the preset power load based on the predicted power output and regional power consumption of the target sub-control area, a request signal is sent to other target sub-control areas.

[0120] The low-voltage distribution network control device provided in the embodiments of the present invention can execute the low-voltage distribution network control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the low-voltage distribution network control method.

[0121] Example 4

[0122] Figure 4 A schematic diagram of a power distribution terminal 10, which can be used to implement embodiments of the present invention, is shown. The power distribution terminal is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The power distribution terminal can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0123] like Figure 4 As shown, the power distribution terminal 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the power distribution terminal 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0124] Multiple components in the power distribution terminal 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless transceiver, etc. The communication unit 19 allows the power distribution terminal 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0125] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as low-voltage distribution network control methods.

[0126] In some embodiments, the low-voltage distribution network control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded into and / or installed on the distribution terminal 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the low-voltage distribution network control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the low-voltage distribution network control method by any other suitable means (e.g., by means of firmware).

[0127] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0128] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0129] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0130] To provide user interaction, the systems and techniques described herein can be implemented on a power distribution terminal, which includes: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the power distribution terminal. Other types of devices can also be used to provide user interaction; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0131] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0132] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0133] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0134] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A low-voltage distribution network control method, characterized in that, include: Obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information; The center correlation of the sub-control node includes: the transmission correlation of each sub-control node relative to the entire link; the determination of the center correlation of the sub-control node based on the path information and the rated current information includes the following calculation formula: ； Where Rq represents the centrality of the sub-control node, n represents all shortest paths, and i represents the i-th shortest path. This indicates whether the i-th path passes through this sub-control node. A value of 1 indicates that the process does not pass through this sub-control node. The value is 0; This represents the number of sub-control nodes on the shortest path; j represents the j-th switch passed through, and m represents all the nearest switches passed through sub-control node q. k Let represent the k-th load connected to switch j, and t represent the total number of loads connected to switch j. This represents the current in the load k. This represents the current in the sub-control node q; Based on the organizational structure of the low-voltage distribution network, at least one hierarchical control area is divided, and the number of sub-control nodes required for each hierarchical control area is determined. The target sub-control area is determined based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area; The low-voltage distribution network is regulated based on the predicted power output and power consumption of the target sub-control area; Based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control region, the target sub-control region is determined, including: When the number of sub-control nodes required for the hierarchical control area is 1, the sub-control node with the highest center relevance in the hierarchical control area is selected as a sub-control node and then determined as the target sub-control area. When the number of sub-control nodes required for the hierarchical control area is greater than 1, the hierarchical control area is determined as the target sub-control area after adding at least two sub-control nodes. When the number of sub-control nodes required for the hierarchical control region is greater than 1, the hierarchical control region is further defined as a target sub-control region after adding at least two sub-control nodes, including: Select the sub-control node with the highest central relevance to add a sub-control node, and then perform a breadth-first traversal with the sub-control node with the highest central relevance as the root node to find the sub-control node controlled by the sub-control node with the highest central relevance.

2. The low-voltage distribution network control method according to claim 1, characterized in that, Determine the number of sub-control nodes required for each of the aforementioned hierarchical control regions, including: Based on the number of edges in each hierarchical control region and the number of corresponding sub-control nodes, and in conjunction with the number of hierarchical control regions, determine the number of sub-control nodes required for each hierarchical control region.

3. The low-voltage distribution network control method according to claim 1, characterized in that, After adding at least two sub-control nodes to the hierarchical control area and determining it as the target sub-control area, the following is also included: Select the sub-control node with the highest central relevance in the target sub-control region as a sub-control node, and traverse the other sub-control nodes in the target sub-control region with the sub-control node with the highest central relevance as the root node; Determine whether the number of sub-control nodes already added in the target sub-control region is less than the number of sub-control nodes required for the corresponding hierarchical control region. If so, reselect the sub-control node with the highest center relevance in the target sub-control region. If not, the addition of sub-control nodes in the target sub-control region has been completed.

4. The low-voltage distribution network control method according to claim 3, characterized in that, The low-voltage distribution network control method also includes: Determine whether all sub-control nodes have been added to each target sub-control area. If so, determine the number of sub-control nodes contained in the target sub-control area. If not, redetermine the target sub-control area.

5. The low-voltage distribution network control method according to claim 3, characterized in that, After traversing other sub-control nodes in the target sub-control region using the sub-control node with the highest central relevance as the root node, the process further includes: If the sub-control node needs to change its target sub-control area, then according to the target function for dividing the control area of ​​the sub-control node, the target sub-control area to which the sub-control node belongs is changed from the current target sub-control area to the next target sub-control area.

6. The low-voltage distribution network control method according to claim 1, characterized in that, The low-voltage distribution network is regulated based on the predicted power output and regional power consumption of the target sub-control area, including: If the power load of the target sub-control area exceeds the preset power load based on the predicted power output and regional power consumption of the target sub-control area, a request signal is sent to other target sub-control areas.

7. A low-voltage distribution network control device, used to execute the low-voltage distribution network control method of any one of claims 1-6, characterized in that, include: The center correlation calculation module is used to obtain the path information and rated current information on the path corresponding to the sub-control node of each initial sub-control area of ​​the low-voltage distribution network, and determine the center correlation of the sub-control node based on the path information and the rated current information. The sub-control node number determination module is used to divide at least one hierarchical control area according to the organizational structure of the low-voltage distribution network, and determine the number of sub-control nodes required for each hierarchical control area. The target sub-control area determination module is used to determine the target sub-control area based on the central relevance of the sub-control nodes and the number of sub-control nodes required for the hierarchical control area. The low-voltage distribution network control module is used to control the low-voltage distribution network based on the predicted power output and regional power consumption of the target sub-control area.

8. A power distribution terminal, characterized in that, The power distribution terminal includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the low-voltage distribution network control method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that are used to cause a processor to execute the low-voltage power distribution network control method according to any one of claims 1-6.

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