Voltage drive control method and device for distribution network considering communication topology changes

Abstract

The present application provides a voltage drive control method and device for a distribution network considering changes in communication topology, and relates to the field of control technology of distribution networks. The method includes: obtaining multiple initial distribution parameters of a power grid area, adjusting the output power of a flexible distribution device, and collecting the current node voltage; constructing a voltage control trigger condition, and when the current node voltage meets the voltage control trigger condition, obtaining an effective communication path of the power grid area, and establishing a communication topology adjacency matrix based on the effective communication path, wherein the communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each power grid area; establishing a voltage control model based on the communication topology adjacency matrix, solving the voltage control model, obtaining the current output power of the flexible distribution device, and controlling the output power of the flexible distribution device to be the current output power. Through this application, the problem of unstable power grid in the case of changes in communication topology in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of control of distribution networks, and in particular to a voltage drive control method, device, computer-readable storage medium and electronic device for a distribution network that takes into account changes in communication topology. Background Art

[0002] With the in-depth construction and development of smart distribution networks, there is an increasing reliance on new information and communication technologies (ICT). Through ICT, massive amounts of data are measured, transmitted and processed, and the interaction between energy flow and information flow will become increasingly frequent. Modern power systems have developed into a new type of cyber-physical power system (CPPS). The CPPS system is composed of the interactive coupling of the ICT network on the information side and the power network on the physical side. It realizes the deep integration of the information field and the physical field through computing, communication and control, that is, 3C technology.

[0003] The rapid development of the cyber-physical system of the power grid has made the perception and control of the power side more accurate and efficient, but it has also introduced potential risks of network attacks. For example, denial of service attacks, as the most common network attacks, can maliciously interrupt the normal functions of equipment, thereby paralyzing the information network and affecting the regulation of the distribution network. At present, in terms of the operation and control of the distribution network, whether it is centralized or distributed voltage control, it relies on a reliable communication network to realize the issuance of control instructions and the interaction of information between regions. Once the communication topology changes, the distribution network cannot perform normal information interaction, and the original control method may fail, which will lead to the collapse of the distribution network control system and cause serious impact. In the current research on the operation and control of the distribution network, the control method under the scenario of the communication network being attacked is not sufficient. The distribution system is subject to dual interference from the information network and the power network during operation. Therefore, the interdependence between the power system and the information network must be considered, and the overall operation control problem must be considered from the perspective of CPPS to improve the reliability and control level of the entire system.

[0004] At the physical system level, each area of ​​the active distribution network is analogized to a cyber-physical power agent, and the actual distribution network is mapped to a multi-agent system. Each agent contains the following devices: 1) generator, 2) phasor measurement unit, 3) distributed controller, and 4) flexible distribution equipment. Advanced measurement devices and flexible distribution equipment at the physical system level provide a realistic guarantee for online voltage control of the active distribution network. At the information system level, the normal operation of a subsystem in the CPPS system depends on the interactive functions of other components or subsystems in the CPPS system. The status of each component or subsystem in the system will affect the performance of each subsystem. Based on the communication network between nodes and controllers, and between controllers, the real-time output strategy of flexible distribution equipment is formulated. The integrated interaction between the communication network and the control decision unit makes the coupling between the power grid and the information network closer, forming a closed-loop intelligent complex system based on real-time state perception, analysis and decision-making of information flow-energy flow. Through the mutual coupling and collaboration of the three levels of CPPS, the closed-loop control of the safe, reliable and efficient operation of the entire system is realized.

[0005] Therefore, how to perform voltage control on flexible distribution network data with changing communication topology when the communication topology between distribution network areas changes randomly is an urgent problem to be solved. Summary of the invention

[0006] The main purpose of the present application is to provide a voltage drive control method, device, computer-readable storage medium and electronic device for a distribution network taking into account changes in communication topology, so as to at least solve the problem of power grid instability in the case of changes in communication topology in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a voltage drive control method for a distribution network considering changes in communication topology is provided, comprising: obtaining multiple initial distribution parameters of a power grid area, adjusting the output power of a flexible distribution device, and collecting a current node voltage, wherein the power grid area includes a flexible distribution device, and the initial distribution parameters include at least the initial node voltage of the power grid area; constructing a voltage control trigger condition, and when the current node voltage satisfies the voltage control trigger condition, obtaining a valid communication path of the power grid area, and establishing a communication topology adjacency matrix based on the valid communication path, wherein the communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each of the power grid areas; establishing a voltage control model based on the communication topology adjacency matrix, solving the voltage control model to obtain the current output power of the flexible distribution device, and controlling the output power of the flexible distribution device to be the current output power, wherein the voltage control model is a model for controlling the output power of the flexible distribution device by voltage when the communication topology of the power grid area changes.

[0008] Optionally, after collecting the current node voltage, the method further includes: calculating a sensitivity vector based on the current node voltage, wherein the sensitivity vector represents the degree of change of the node voltage with the output power of the flexible distribution equipment; and establishing a voltage control mapping matrix based on the sensitivity vector, wherein the voltage control mapping matrix represents the node voltage matrix corresponding to each of the power grid areas.

[0009] Optionally, calculating the sensitivity vector according to the current node voltage includes: calculating the sensitivity vector according to the current node voltage by the formula Calculate the sensitivity vector, where r represents the number of the power grid area, represents the sensitivity vector of the grid area r, N r represents the number of controllable independent variables of the flexible power distribution device in the power grid area r, V r,i represents the current node voltage matrix of the ith controllable independent variable of the grid area r, F r,i represents the output power matrix of the ith controllable independent variable of the power grid area r, t represents the operation control time of the power grid area, Indicates the operation control time interval of the power grid area.

[0010] Optionally, according to the sensitivity vector, a voltage control mapping matrix is ​​established, including: by formula Establish a voltage control mapping matrix, where represents the voltage control mapping matrix of the grid area r, M r represents the number of all grid nodes in the grid area r, N r is the number of controllable independent variables of the flexible power distribution equipment in the grid area r, yes The set of elements from rows 1 to M and columns 1 to N, , represents the sensitivity vector of the grid region r, yes The set of elements from rows 1 to M and columns 1 to N+1.

[0011] Optionally, construct a voltage control trigger condition, including: The voltage control trigger condition is constructed, wherein: represents the current node voltage vector of the measurement node in the grid region r at time t, represents the voltage reference value vector of the measurement node in the grid area r at time t, is the voltage controlled trigger threshold.

[0012] Optionally, establishing a communication topology adjacency matrix according to the effective communication path includes: using the formula Establish the communication topology adjacency matrix, where A represents the communication topology adjacency matrix, and the element a in the communication topology adjacency matrix rs The value of indicates whether the effective communication path exists between the rth grid area and the sth grid area. In the case where the rth grid area and the sth grid area have the valid communication path, In the case where the rth power grid area and the sth power grid area do not have the valid communication path.

[0013] Optionally, establishing a voltage control model according to the communication topology adjacency matrix includes: using the formula The consistency output vector is calculated according to the communication topology adjacency matrix, wherein, represents the consistency output vector, represents the communication topology adjacency matrix of the power grid area r at time t, represents the current node voltage matrix of the grid area r at time t, represents the current node voltage matrix of the power grid area s at time t, is the voltage reference value of the grid area r at time t, Indicates whether the grid area r can obtain the voltage reference value. If so, then ,otherwise , H r represents a set of adjacent areas of the power grid area; a voltage control model is established according to the consistency output vector: ,in, Indicates t to The change in the consistency output vector within a time period, represents the change of the augmented control strategy, is the voltage control mapping matrix of the power grid area r at time t.

[0014] According to another aspect of the present application, a voltage drive control device for a distribution network taking into account changes in communication topology is provided, comprising: a collection unit, used to obtain multiple initial distribution parameters of a power grid area, adjust the output power of a flexible distribution device, and collect the current node voltage, wherein the power grid area includes flexible distribution equipment, and the initial distribution parameters include at least the initial node voltage of the power grid area; a first establishment unit, used to construct a voltage control trigger condition, and when the current node voltage satisfies the voltage control trigger condition, obtain an effective communication path of the power grid area, and establish a communication topology adjacency matrix based on the effective communication path, wherein the communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each of the power grid areas; a control unit, used to establish a voltage control model based on the communication topology adjacency matrix, solve the voltage control model, obtain the current output power of the flexible distribution device, and control the output power of the flexible distribution device to be the current output power, wherein the voltage control model is a model for controlling the output power of the flexible distribution device by voltage when the communication topology of the power grid area changes.

[0015] According to another aspect of the present application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the voltage drive control methods for the distribution network considering changes in communication topology.

[0016] According to another aspect of the present application, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a method for executing any one of the voltage drive control methods for a distribution network that takes into account changes in communication topology.

[0017] Apply the technical solution of the present application, obtain multiple initial power distribution parameters of the power grid area, adjust the output power of the flexible power distribution equipment, and collect the current node voltage. The power grid area includes flexible power distribution equipment, and the initial power distribution parameters include at least the initial node voltage of the power grid area; construct a voltage control trigger condition, and when the current node voltage meets the voltage control trigger condition, obtain the effective communication path of the power grid area, and establish a communication topology adjacency matrix based on the effective communication path. The communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each power grid area; establish a voltage control model based on the communication topology adjacency matrix, solve the voltage control model, obtain the current output power of the flexible power distribution equipment, and control the output power of the flexible power distribution equipment to be the current output power. The voltage control model is a model that controls the output power of the flexible distribution network by voltage when the communication topology of the power grid area changes. Compared with the prior art, when the communication topology of the power grid changes, the power grid may have the problem of unstable control. The present application constructs a data-driven distributed voltage control model based on real-time measurement data, fully saves computing resources, effectively improves the voltage over-limit situation of the distribution network, and improves the flexible and efficient operation level of the active distribution system. Therefore, the problem of power grid instability in the case of communication topology changes in the prior art can be solved, and the effect of stable power grid control can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 A hardware structure block diagram of a mobile terminal for executing a voltage drive control method for a distribution network taking into account changes in communication topology provided by an embodiment of the present application is shown;

[0020] Figure 2 A schematic flow chart of a voltage drive control method for a distribution network taking into account changes in communication topology provided in an embodiment of the present application is shown;

[0021] Figure 3 A schematic flow chart of a specific voltage drive control method for a distribution network taking into account changes in communication topology provided in an embodiment of the present application is shown;

[0022] Figure 4 A schematic diagram of a specific power grid topology structure provided by an embodiment of the present application is shown;

[0023] Figure 5 A schematic diagram of a source-charge fluctuation curve provided in an embodiment of the present application is shown;

[0024] Figure 6A schematic diagram of a random switching process of a communication topology at 10:00 provided in an embodiment of the present application is shown;

[0025] Figure 7 A schematic diagram of a random switching process of a communication topology from 10:00 to 11:00 provided in an embodiment of the present application is shown;

[0026] Figure 8 A schematic diagram of a communication topology between power grid areas provided in an embodiment of the present application is shown;

[0027] Fig. 9 A schematic diagram of a four-node voltage control process in a 10:00 scenario provided by an embodiment of the present application is shown;

[0028] Fig.10 A schematic diagram of a control process of a flexible power distribution device in scenario four at 10:00 provided in an embodiment of the present application is shown;

[0029] Fig.11 A schematic diagram of voltage comparison of node 18 in different scenarios at 10:00 provided by an embodiment of the present application is shown;

[0030] Fig.12 A schematic diagram of a four-node voltage control process in a 10:00-11:00 scenario provided by an embodiment of the present application is shown;

[0031] Fig.13 A schematic diagram of a control process of a flexible power distribution device in scenario 4 from 10:00 to 11:00 provided by an embodiment of the present application is shown;

[0032] Fig.14 A schematic diagram of voltage comparison of node 18 in different scenarios from 10:00 to 11:00 provided by an embodiment of the present application is shown;

[0033] Fig.15 A structural block diagram of a voltage drive control device for a distribution network taking into account changes in communication topology provided by an embodiment of the present application is shown.

[0034] The above drawings include the following reference numerals:

[0035] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] As introduced in the background technology, in the prior art, the power grid is unstable when the communication topology changes. To solve the problem of power grid instability when the communication topology changes, the embodiments of the present application provide a voltage drive control method, device, computer-readable storage medium and electronic device for a distribution network that takes into account the change of communication topology.

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a voltage drive control method for a distribution network considering changes in communication topology according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0042] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the voltage drive control method of the distribution network considering the change of communication topology in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof. The transmission device 106 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0043] In this embodiment, a voltage drive control method for a distribution network taking into account changes in communication topology is provided, which runs on a mobile terminal, a computer terminal or a similar computing device. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown here.

[0044] Figure 2 1 is a flow chart of a voltage drive control method for a distribution network considering changes in communication topology according to an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0045] Step S201, obtaining a plurality of initial power distribution parameters of a power grid area, adjusting the output power of a flexible power distribution device, and collecting a current node voltage, wherein the power grid area includes a flexible power distribution device, and the initial power distribution parameters include at least an initial node voltage of the power grid area;

[0046] Specifically, for a given plurality of power grid areas, a controller is deployed in each area to execute the voltage drive control method of the distribution network considering the change of communication topology of the present application. First, the initial distribution parameters of each controller are input, which may specifically include: the access location of the node voltage measurement device in the area, the access location and capacity of the flexible distribution equipment, the node voltage reference value V ref (i.e. the above-mentioned initial node voltage), the sampling frequency f of the controller and the total control time T, starting from the moment the controller is connected to the system, recorded as t=0.

[0047] Step S202, constructing a voltage control trigger condition, obtaining a valid communication path of the power grid area when the current node voltage satisfies the voltage control trigger condition, and establishing a communication topology adjacency matrix according to the valid communication path, wherein the communication topology adjacency matrix is ​​a matrix characterizing the communication relationship between each of the power grid areas;

[0048] Specifically, the measuring device in each area samples the current node voltage, and the controller constructs the voltage control trigger condition based on the real-time voltage measurement data; if the voltage measurement data (current node voltage) of a certain area at the current moment meets the voltage control trigger condition, then proceed to the next step to establish the communication topology adjacency matrix; otherwise, continue to determine whether the voltage control trigger condition is met.

[0049] Step S203, establishing a voltage control model according to the communication topology adjacency matrix, solving the voltage control model to obtain the current output power of the flexible distribution equipment, and controlling the output power of the flexible distribution equipment to be the current output power, wherein the voltage control model is a model in which the output power of the flexible distribution equipment is controlled by voltage when the communication topology of the power grid area changes.

[0050] Specifically, the controllers in each region search for the feasible communication paths between regions at the current moment and establish a communication topology adjacency matrix; the controllers in each region exchange voltage measurement information and calculate their respective consensus output vectors based on the adjacency matrix; according to the obtained consensus output vectors, the controllers in each region aim to minimize the overall deviation of the inter-region voltage, the deviation between the intra-region voltage measurement value and the voltage reference value, and the output power change of the flexible distribution equipment within the region, and establish a data-driven voltage control model for the flexible distribution network considering the communication topology change. The controllers in each region solve the voltage control model in parallel to obtain the active and reactive power output strategies of the flexible distribution equipment, i.e., the current output power, and send the control strategy to the flexible distribution equipment within its own region. Then, new real-time voltage measurement data is obtained again, and the above steps are repeated to complete the voltage-based drive control. Finally, the current control duration \(t = t_k\) is obtained, and it is judged whether the current control duration \(t_k\) is greater than the total control duration \(T\). If \(t_k < T\), it is continued to judge whether the voltage control trigger condition is satisfied; otherwise, the process ends.

[0051] Through this embodiment, multiple initial distribution parameters of the power grid region are obtained, the output power of the flexible distribution equipment is adjusted, and the current node voltage is collected. The power grid region includes the flexible distribution equipment, and the initial distribution parameters at least include the initial node voltage of the power grid region; a voltage control trigger condition is constructed. When the current node voltage satisfies the voltage control trigger condition, the effective communication paths of the power grid region are obtained, and a communication topology adjacency matrix is established according to the effective communication paths. The communication topology adjacency matrix is a matrix representing the communication relationship between each power grid region; a voltage control model is established according to the communication topology adjacency matrix, the voltage control model is solved to obtain the current output power of the flexible distribution equipment, and the output power of the flexible distribution equipment is controlled to be the current output power. The voltage control model is a model for controlling the output power of the flexible distribution network by voltage under the condition of the communication topology change of the power grid region. Compared with the prior art, in the case of the communication topology change of the power grid, there may be problems of unstable control in the power grid. In this application, a data-driven distributed voltage control model is constructed based on real-time measurement data, which fully saves computing resources, effectively improves the voltage over-limit situation of the distribution network, and enhances the flexible and efficient operation level of the active distribution system. Therefore, it can solve the problem of power grid instability in the prior art under the condition of communication topology change and achieve the effect of stable power grid control.

[0052] In the specific implementation process, after the above step S201 collects the current node voltage, the method further includes the following steps: step S204: calculating the sensitivity vector according to the current node voltage, wherein the sensitivity vector represents the degree of change of the node voltage with the output power of the flexible power distribution device; step S205: establishing a voltage control mapping matrix according to the sensitivity vector, wherein the voltage control mapping matrix represents the node voltage matrix corresponding to each of the power grid areas. The method establishes a voltage control mapping matrix through the above steps so that the subsequent steps can perform voltage control according to the voltage control mapping matrix.

[0053] Specifically, in the above steps, the controller of each area adjusts the active and reactive output levels of the flexible distribution equipment in the area, obtains the change in the voltage measurement value of each node in the area (the change can be calculated by subtracting the initial node voltage from the current node voltage), and calculates the sensitivity vector of the node voltage and the output of the flexible distribution equipment; the controller of each area initializes the voltage control mapping matrix based on the node voltage flexible distribution equipment output sensitivity vector obtained in the above steps, and establishes the voltage control mapping matrix.

[0054] In some optional implementations, step S204 calculates the sensitivity vector according to the current node voltage, which can be implemented by the following steps: step S2041: calculate the sensitivity vector according to the current node voltage by formula Calculate the sensitivity vector, where r represents the number of the power grid area, represents the sensitivity vector of the grid area r, N r represents the number of controllable independent variables of the flexible power distribution device in the power grid area r, V r,i represents the current node voltage matrix of the ith controllable independent variable of the grid area r, F r,i represents the output power matrix of the ith controllable independent variable of the power grid area r, t represents the operation control time of the power grid area, The method calculates the sensitivity vector by the above formula, so that the relationship between the output size of the flexible power distribution equipment and the voltage control amplitude can be obtained, so as to adjust the voltage control amplitude more accurately.

[0055] In some other optional implementations, step S205 establishes a voltage control mapping matrix according to the sensitivity vector, which can be achieved by the following steps: Establish a voltage control mapping matrix, where represents the voltage control mapping matrix of the grid area r, M r represents the number of all grid nodes in the grid area r, N ris the number of controllable independent variables of the flexible power distribution equipment in the grid area r, yes The set of elements from rows 1 to M and columns 1 to N, , represents the sensitivity vector of the grid region r, yes The set of elements in rows 1 to M and columns 1 to N+1. The method establishes a voltage control mapping matrix through the above steps, which can reflect the voltage control logic and relationship of each area and facilitate the voltage regulation of each grid area.

[0056] In the specific implementation process, the above , All are positive numbers.

[0057] In some optional implementations, the above step S202 constructs the voltage control trigger condition, which can be implemented by the following steps: The voltage control trigger condition is constructed, wherein: represents the current node voltage vector of the measurement node in the grid region r at time t, represents the voltage reference value vector of the measurement node in the grid area r at time t, The method constructs the voltage control triggering condition through the above steps, so as to judge whether the current node voltage meets the voltage control triggering condition, so as to further determine whether to perform voltage control.

[0058] Specifically, the measurement device in each area samples the current node voltage, and the controller constructs the voltage control trigger condition based on the real-time measurement data; if the measurement data of a certain area at the current moment meets the voltage control trigger condition, it proceeds to the next step, otherwise it continues to judge. If the above voltage control trigger condition is not met, the flexible power distribution equipment in each area adopts the active and reactive power control strategy of the previous moment, and continues to sample the measurement node voltage until the real-time measurement data meets the voltage control trigger condition; when the trigger condition is not met, the flexible power distribution equipment strategy update method in each area is as follows:

[0059]

[0060] In the formula, and They are Active and reactive power control strategy of flexible distribution equipment in area r at time t and time t; and They are The voltage control mapping matrix of region r at time t.

[0061] In some optional implementations, the establishment of a communication topology adjacency matrix according to the effective communication path in step S202 may be achieved by the following steps: Establish the communication topology adjacency matrix, where A represents the communication topology adjacency matrix, and the element a in the communication topology adjacency matrix rs The value of indicates whether the effective communication path exists between the rth grid area and the sth grid area. In the case where the rth grid area and the sth grid area have the valid communication path, In the case of , the effective communication path does not exist between the rth grid area and the sth grid area. The method establishes a communication topology adjacency matrix through the above steps, so that the current structure of the communication topology of the grid area and whether it has changed can be known, and voltage control is performed according to the current topology structure to adapt to changes in the communication topology structure and maintain the stability and controllability of the grid.

[0062] In the specific implementation process, the controller of each area searches for the feasible communication path between the areas at the current moment and establishes the communication topology adjacency matrix , that is, A is a matrix with H rows and H columns, where H is the number of power grid areas; the controllers in each area exchange voltage measurement information and calculate their own consistent distributed output vectors based on the adjacency matrix; among them, the communication relationship between the distribution network areas can be represented by a directed communication topology graph: , where v represents the set of regions; ε represents whether there is a communication path between regions; A represents the adjacency matrix of the directed communication topology. The adjacency matrix contains the communication relationship information between regions, where , the neighbors of region r are defined as the set .

[0063] In another optional implementation, the above step S203 establishes a voltage control model according to the communication topology adjacency matrix, including: The consistency output vector is calculated according to the communication topology adjacency matrix, wherein, represents the consistency output vector, represents the communication topology adjacency matrix of the power grid area r at time t, represents the current node voltage matrix of the grid area r at time t, represents the current node voltage matrix of the power grid area s at time t, is the voltage reference value of the grid area r at time t, Indicates whether the grid area r can obtain the voltage reference value. If so, then ,otherwise , H rrepresents a set of adjacent areas of the power grid area; a voltage control model is established according to the consistency output vector: ,in, Indicates t to The change in the consistency output vector within a time period, represents the change of the augmented control strategy, is the voltage control mapping matrix of the grid region r at time t. The method establishes a voltage control model through the above steps, so that the operation of the grid can be controlled based on the voltage.

[0064] Specifically, based on the above adjacency matrix, the controllers of each region exchange voltage measurement information and calculate the consistency output vector of the region respectively. Based on the obtained consistency output vector, the controllers of each region establish a flexible distribution network data-driven voltage control model that takes into account the change of communication topology, with the goal of minimizing the voltage deviation between regions, the deviation between the voltage measurement value and the voltage reference value within the region, and the overall change of the output of the flexible distribution equipment in the region; To augment control strategies; for The change of the augmented control strategy in the time period t, the voltage control mapping matrix is ​​used to reflect the internal structure and parameters of the system, and its expression can also be:

[0065]

[0066] In the formula, is the change in the consistency output vector of the grid region r, is the weight coefficient.

[0067] Furthermore, the objective function of voltage control driven by flexible distribution network considering the change of communication topology is:

[0068]

[0069] In the formula, for The consistency output vector of the grid area r at time, and are time t and The active and reactive output of flexible power distribution equipment at all times, is the weight coefficient.

[0070] The controllers in each grid area solve the above voltage control model in parallel to obtain the active and reactive output strategy of the flexible distribution equipment, send the control strategy to the flexible distribution equipment in its own area, and obtain new real-time voltage measurement data; the controllers in each area use the gradient descent method to solve the objective function, and the calculation method is:

[0071]

[0072] In the formula, and are time t and Active and reactive output strategy of flexible distribution equipment in area r at time, is the set of elements in the 1st to Mth rows and the 1st to Nth columns of the voltage control mapping matrix of the power grid region r at time t, is the set of elements from row 1 to M and column N+1 of the voltage control mapping matrix of region r at time t, is the consistency output vector of the power grid region r at time t; is the weight coefficient.

[0073] The controller of each area uses the gradient descent method to solve the voltage control mapping matrix, and its calculation method is:

[0074]

[0075] In the formula, and are time t and The voltage control mapping matrix of the region r at time; for The change in the region r augmentation control strategy from time period t to time period t; is the weight coefficient.

[0076] The modified equation of the voltage control mapping matrix is:

[0077]

[0078] In the formula, and They are and The initial value of and They are The diagonal and off-diagonal elements of ; is the correction factor.

[0079] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the voltage drive control method of the distribution network considering the change of communication topology of the present application will be described in detail below in combination with specific embodiments.

[0080] This embodiment relates to a specific voltage drive control method for a distribution network taking into account changes in communication topology, such as Figure 3 As shown, the following steps are included:

[0081] Step S1: Start;

[0082] Step S2: Acquire regional real-time measurement data (initial node voltage);

[0083] Step S3: Initializing the voltage control mapping matrix;

[0084] Step S4: Obtaining system real-time measurement data (current node voltage);

[0085] Step S5: determine whether the voltage control trigger condition is met, if yes, proceed to step S6, if no, return to step S4;

[0086] Step S6: Searching for communication topology and information exchange;

[0087] Step S7: constructing regional consistency output variables;

[0088] Step S8: Modify the voltage control mapping matrix;

[0089] Step S9: flexible power distribution equipment control strategy;

[0090] Step S10: Update system real-time measurement data;

[0091] Step S11: Determine whether t k >T, if yes, end; if no, return to step S5.

[0092] The following is a specific embodiment. Figure 4 This is a schematic diagram of a specific power grid topology structure. The structure is an improved IEEE33-node distribution system connected to a power grid topology structure with 6 groups of photovoltaics. The photovoltaic penetration rate reaches 99.60%. The (PV) photovoltaic capacities corresponding to nodes 13, 16, 17, 27, 30, and 33 are 800kWp, 800kWp, 600kWp, 500kWp, 600kWp, and 400kWp, respectively. Three groups of SOPs are connected between nodes 18 and 33, 25 and 29, and 12 and 22, namely SOP1, SOP2, and SOP3, with a capacity of 1MVA. The measurement device is deployed at the SOP port access node location. The measurement nodes in area one are nodes 18 and 33, the measurement nodes in area two are nodes 25 and 29, and the measurement nodes in area three are nodes 12 and 22. The source-load fluctuation curve is shown in Figure 2. Figure 5 As shown in the figure, the system voltage is 12.66kV, the reference power is 1MVA, and the system active and reactive loads are 3715kW and 2300kvar respectively. The sampling frequency is f=1Hz, the total control time is T=1h, and the voltage reference value of the distribution network is set to 1.0pu. The flexible distribution network data-driven voltage control method considering the change of communication topology is used for control. After the above steps, the output strategy of the flexible distribution equipment can be obtained. In order to verify the effectiveness of this method, the following four control scenarios are used for comparison for the flexible distribution system:

[0093] Scenario 1: The flexible power distribution equipment is not controlled to obtain the initial operating state of the flexible power distribution system;

[0094] Scenario 2: Using data-driven distributed voltage control method;

[0095] Scenario 3: Using a data-driven centralized voltage control method;

[0096] Scenario 4: Using the proposed data-driven voltage control method that considers changes in communication topology.

[0097] The computer hardware environment for performing optimization calculations is Intel(R) Core(TM) CPU i5-13500HX, with a main frequency of 2.5GHz and a memory of 16GB; the software environment is the Windows 11 operating system.

[0098] The communication topology between each power grid area is as follows: Figure 8 The random switching process of the communication topology at 10:00 is shown in Figure 6 The voltage control process of the four nodes in the 10:00 scenario is as follows: Fig. 9 10:00 Scenario 4 Flexible power distribution equipment control process is as follows Fig.10 As shown. The voltage comparison of node 18 in different scenarios at 10:00 is as follows Fig.11 The random switching process of communication topology from 10:00 to 11:00 is shown in Figure 7 The voltage control process of the four nodes in the 10:00-11:00 scenario is as follows: Fig.12 The control process of flexible power distribution equipment in scenario 4 from 10:00 to 11:00 is shown in the figure. Fig.13 The voltage comparison of node 18 in different scenarios from 10:00 to 11:00 is shown in Figure 1. Fig.14 shown.

[0099] Combination Fig. 9 and Fig.10 It can be seen that scenario four can effectively adapt to changes in communication topology, adaptively adjust the voltage level of the flexible distribution system in this embodiment, and adaptively adjust the active and reactive output levels of the flexible distribution equipment.

[0100] Depend on Fig.11 It can be seen that compared with the data-driven centralized voltage control method in scenario three, the data-driven voltage control method in scenario four that considers changes in communication topology can approximately achieve a global optimization effect.

[0101] Combination Fig.12 and Fig.13It can be seen that scenario four can effectively adapt to changes in communication topology and source-load status, adaptively adjust the voltage level of the flexible distribution system in this embodiment, and adaptively adjust the active and reactive output levels of the flexible distribution equipment.

[0102] Depend on Fig.14 It can be seen that compared with scenario 1 without control, the voltage level is significantly improved by using the data-driven voltage control method in scenario 4 that considers changes in communication topology.

[0103] The embodiment of the present application also provides a voltage drive control device for a distribution network considering changes in communication topology. It should be noted that the voltage drive control device for a distribution network considering changes in communication topology in the embodiment of the present application can be used to execute the voltage drive control method for a distribution network considering changes in communication topology provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and those that have been described will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0104] The following introduces a voltage drive control device for a distribution network that takes into account changes in communication topology provided in an embodiment of the present application.

[0105] Fig.15 Schematic diagram of a voltage drive control device for a distribution network considering changes in communication topology according to an embodiment of the present application. Fig.15 As shown, the device comprises:

[0106] The acquisition unit 110 is used to acquire a plurality of initial power distribution parameters of a power grid area, adjust the output power of a flexible power distribution device, and acquire a current node voltage, wherein the power grid area includes a flexible power distribution device, and the initial power distribution parameters include at least an initial node voltage of the power grid area;

[0107] Specifically, for a given plurality of power grid areas, a controller is deployed in each area to execute the voltage drive control device of the distribution network considering the change of communication topology of the present application. First, the initial distribution parameters of each controller are input, which may specifically include: the access location of the node voltage measurement device in the area, the access location and capacity of the flexible distribution equipment, the node voltage reference value V ref (i.e. the above-mentioned initial node voltage), the sampling frequency f of the controller and the total control time T, starting from the moment the controller is connected to the system, recorded as t=0.

[0108] The first establishment unit 120 is configured to construct a voltage control trigger condition. When the current node voltage meets the voltage control trigger condition, an effective communication path of the power grid area is obtained, and a communication topology adjacency matrix is established according to the effective communication path, where the communication topology adjacency matrix is a matrix representing the communication relationship between the power grid areas;

[0109] Specifically, the measurement devices in each area sample the current node voltage, and the controller constructs a voltage control trigger condition based on the real-time measurement data of the voltage. If the measurement data of the voltage in a certain area (the current node voltage) at the current moment meets the voltage control trigger condition, the next step is to establish a communication topology adjacency matrix; otherwise, continue to judge whether the voltage control trigger condition is met.

[0110] The control unit 130 is configured to establish a voltage control model according to the communication topology adjacency matrix, solve the voltage control model to obtain the current output power of the flexible power distribution device, and control the output power of the flexible power distribution device to be the current output power, where the voltage control model is a model for controlling the output power of the flexible power distribution device by voltage under the condition of the communication topology change in the power grid area.

[0111] Specifically, the controllers in each area search for the feasible communication paths between areas at the current moment and establish a communication topology adjacency matrix; the controllers in each area exchange voltage measurement information and calculate their respective consistent output vectors based on the adjacency matrix. Based on the obtained consistent output vectors, the controllers in each area aim to minimize the overall voltage deviation between areas, the deviation between the voltage measurement value and the voltage reference value within the area, and the output power change of the flexible power distribution device within the area, and establish a data-driven voltage control model for the flexible distribution network considering the communication topology change. The controllers in each area solve the voltage control model in parallel to obtain the active and reactive power output strategies of the flexible power distribution device, that is, the current output power, and send the control strategy to the flexible power distribution devices within their own areas. Then, new real-time voltage measurement data is obtained again, and the above steps are repeated to complete the drive control based on voltage. Finally, the current control duration t = t_k is obtained, and it is judged whether the current control duration t_k is greater than the total control duration T. If t_k < T, continue to judge whether the voltage control trigger condition is met; otherwise, end.

[0112] Through this embodiment, multiple initial power distribution parameters of the power grid area are obtained, the output power of the flexible power distribution equipment is adjusted, and the current node voltage is collected. The power grid area includes flexible power distribution equipment, and the initial power distribution parameters include at least the initial node voltage of the power grid area; the voltage control trigger condition is constructed, and when the current node voltage meets the voltage control trigger condition, the effective communication path of the power grid area is obtained, and the communication topology adjacency matrix is ​​established according to the effective communication path. The communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each power grid area; a voltage control model is established according to the communication topology adjacency matrix, and the voltage control model is solved to obtain the current output power of the flexible power distribution equipment, and the output power of the flexible power distribution equipment is controlled to be the current output power. The voltage control model is a model of the output power of the flexible distribution network controlled by voltage when the communication topology of the power grid area changes. Compared with the prior art, when the communication topology of the power grid changes, the power grid may have the problem of unstable control. The present application constructs a data-driven distributed voltage control model based on real-time measurement data, fully saves computing resources, effectively improves the voltage over-limit situation of the distribution network, and improves the flexible and efficient operation level of the active distribution system. Therefore, the problem of power grid instability in the case of communication topology changes in the prior art can be solved, and the effect of stable power grid control can be achieved.

[0113] In the specific implementation process, the above device also includes a first calculation unit and a second establishment unit, the first calculation unit is used to calculate the sensitivity vector according to the current node voltage, wherein the sensitivity vector represents the degree of change of the node voltage with the output power of the flexible power distribution device; the second establishment unit is used to establish a voltage control mapping matrix according to the sensitivity vector, wherein the voltage control mapping matrix represents the node voltage matrix corresponding to each of the power grid areas. The device establishes the voltage control mapping matrix through the above steps, so that the subsequent steps can perform voltage control according to the voltage control mapping matrix.

[0114] Specifically, in the above steps, the controller of each area adjusts the active and reactive output levels of the flexible distribution equipment in the area, obtains the change in the voltage measurement value of each node in the area (the change can be calculated by subtracting the initial node voltage from the current node voltage), and calculates the sensitivity vector of the node voltage and the output of the flexible distribution equipment; the controller of each area initializes the voltage control mapping matrix based on the node voltage flexible distribution equipment output sensitivity vector obtained in the above steps, and establishes the voltage control mapping matrix.

[0115] In some optional implementations, the first calculation unit includes a first calculation module, which is used to calculate the current node voltage according to the formula Calculate the sensitivity vector, where r represents the number of the power grid area, represents the sensitivity vector of the grid area r, N r represents the number of controllable independent variables of the flexible power distribution device in the power grid area r, V r,i represents the current node voltage matrix of the ith controllable independent variable of the grid area r, F r,i represents the output power matrix of the ith controllable independent variable of the power grid area r, t represents the operation control time of the power grid area, The device calculates the sensitivity vector by the above formula, so that the relationship between the output size of the flexible power distribution equipment and the voltage control amplitude can be obtained, so as to adjust the voltage control amplitude more accurately.

[0116] In some other optional embodiments, the second establishing unit includes a second calculating module for calculating the value of Establish a voltage control mapping matrix, where represents the voltage control mapping matrix of the grid area r, M r represents the number of all grid nodes in the grid area r, N r is the number of controllable independent variables of the flexible power distribution equipment in the grid area r, yes The set of elements from rows 1 to M and columns 1 to N, , represents the sensitivity vector of the grid region r, yes The set of elements from row 1 to M and column 1 to N+1. The device establishes a voltage control mapping matrix through the above steps, which can reflect the voltage control logic and relationship of each area and facilitate the voltage regulation of each grid area.

[0117] In the specific implementation process, the above , All are positive numbers.

[0118] In some optional embodiments, the first establishing unit includes a first building module for using the formula The voltage control trigger condition is constructed, wherein: represents the current node voltage vector of the measurement node in the grid region r at time t, represents the voltage reference value vector of the measurement node in the grid area r at time t, The device constructs the voltage control trigger condition through the above steps, so as to judge whether the current node voltage meets the voltage control trigger condition, so as to further determine whether to perform voltage control.

[0119] Specifically, the measurement device in each area samples the current node voltage, and the controller constructs the voltage control trigger condition based on the real-time measurement data; if the measurement data of a certain area at the current moment meets the voltage control trigger condition, it proceeds to the next step, otherwise it continues to judge. If the above voltage control trigger condition is not met, the flexible power distribution equipment in each area adopts the active and reactive power control strategy of the previous moment, and continues to sample the measurement node voltage until the real-time measurement data meets the voltage control trigger condition; when the trigger condition is not met, the flexible power distribution equipment strategy update device in each area is as follows:

[0120]

[0121] In the formula, and They are Active and reactive power control strategy of flexible distribution equipment in area r at time t and time t; and They are The voltage control mapping matrix of region r at time t.

[0122] In some optional implementations, the first establishing unit further includes a first establishing module for establishing Establish the communication topology adjacency matrix, where A represents the communication topology adjacency matrix, and the element a in the communication topology adjacency matrix rs The value of indicates whether the effective communication path exists between the rth grid area and the sth grid area. In the case where the rth grid area and the sth grid area have the valid communication path, In the case of , the effective communication path does not exist between the rth grid area and the sth grid area. The device establishes a communication topology adjacency matrix through the above steps, so that the current structure of the communication topology of the grid area and whether it has changed can be known, and voltage control is performed according to the current topology structure to adapt to changes in the communication topology structure and maintain the stability and controllability of the grid.

[0123] In the specific implementation process, the controller of each area searches for the feasible communication path between the areas at the current moment and establishes the communication topology adjacency matrix , that is, A is a matrix with H rows and H columns, where H is the number of power grid areas; the controllers in each area exchange voltage measurement information and calculate their own consistent distributed output vectors based on the adjacency matrix; among them, the communication relationship between the distribution network areas can be represented by a directed communication topology graph: , where v represents the set of regions; ε represents whether there is a communication path between regions; A represents the adjacency matrix of the directed communication topology. The adjacency matrix contains the communication relationship information between regions, where , the neighbors of region r are defined as the set .

[0124] In another optional embodiment, the control unit includes a third calculation module and a second establishment module, and the third calculation module is used to calculate the value of The consistency output vector is calculated according to the communication topology adjacency matrix, wherein, represents the consistency output vector, represents the communication topology adjacency matrix of the power grid area r at time t, represents the current node voltage matrix of the grid area r at time t, represents the current node voltage matrix of the power grid area s at time t, is the voltage reference value of the grid area r at time t, Indicates whether the grid area r can obtain the voltage reference value. If so, then ,otherwise , H r represents a set of adjacent areas of the power grid area; a voltage control model is established according to the consistency output vector: ,in, Indicates t to The change in the consistency output vector within a time period, represents the change of the augmented control strategy, is the voltage control mapping matrix of the grid area r at time t. The device establishes a voltage control model through the above steps, so that the operation of the grid can be controlled based on the voltage.

[0125] The voltage drive control device for the distribution network considering the change of communication topology includes a processor and a memory, and the above-mentioned acquisition unit, the first establishment unit and the control unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions. The above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in different processors in the form of any combination.

[0126] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the problem of power grid instability in the case of communication topology changes in the prior art can be solved by adjusting kernel parameters.

[0127] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0128] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the voltage drive control method of the distribution network considering the change of communication topology.

[0129] An embodiment of the present invention provides an electronic device, including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, a voltage drive control method for a distribution network that takes into account changes in communication topology is implemented.

[0130] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0131] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0132] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0133] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0134] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0135] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0136] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0137] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0138] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0139] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0140] 1) In the voltage-driven control method of the distribution network considering the change of communication topology of the present application, multiple initial distribution parameters of the power grid area are obtained, the output power of the flexible distribution equipment is adjusted, and the current node voltage is collected. The power grid area includes the flexible distribution equipment, and the initial distribution parameters include at least the initial node voltage of the power grid area; the voltage control trigger condition is constructed, and when the current node voltage meets the voltage control trigger condition, the effective communication path of the power grid area is obtained, and the communication topology adjacency matrix is ​​established according to the effective communication path. The communication topology adjacency matrix is ​​a matrix that characterizes the communication relationship between each power grid area; a voltage control model is established according to the communication topology adjacency matrix, and the voltage control model is solved to obtain the current output power of the flexible distribution equipment, and the output power of the flexible distribution equipment is controlled to be the current output power. The voltage control model is a model of the output power of the flexible distribution network controlled by voltage when the communication topology of the power grid area changes. Compared with the prior art, when the communication topology of the power grid changes, the power grid may have the problem of unstable control. The present application constructs a data-driven distributed voltage control model based on real-time measurement data, fully saves computing resources, effectively improves the voltage over-limit situation of the distribution network, and improves the flexible and efficient operation level of the active distribution system. Therefore, the problem of power grid instability in the case of communication topology changes in the prior art can be solved, and the effect of stable power grid control can be achieved.

[0141] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A voltage drive control method for a distribution network considering changes in communication topology, characterized in that: include: Acquire multiple initial power distribution parameters of a power grid area, adjust the output power of a flexible power distribution device, and collect current node voltages, wherein the power grid area includes flexible power distribution devices, and the initial power distribution parameters include at least an initial node voltage of the power grid area; Constructing a voltage control trigger condition, and when the current node voltage satisfies the voltage control trigger condition, obtaining a valid communication path of the power grid area, and establishing a communication topology adjacency matrix according to the valid communication path, wherein the communication topology adjacency matrix is ​​a matrix characterizing the communication relationship between each of the power grid areas; A voltage control model is established according to the communication topology adjacency matrix, the voltage control model is solved to obtain the current output power of the flexible power distribution device, and the output power of the flexible power distribution device is controlled to be the current output power, wherein the voltage control model is a model for controlling the output power of the flexible power distribution device by voltage when the communication topology of the power grid area changes; A voltage control model is established according to the communication topology adjacency matrix, including: By formula The consistency output vector is calculated according to the communication topology adjacency matrix, wherein, represents the consistency output vector, represents the communication topology adjacency matrix of the power grid area r at time t, represents the current node voltage matrix of the grid area r at time t, represents the current node voltage matrix of the power grid area s at time t, is the voltage reference value of the grid area r at time t, Indicates whether the grid area r can obtain the voltage reference value. If so, then ,otherwise , H r A set of adjacent regions representing the power grid region; The voltage control model is established according to the consistency output vector: ,in, Indicates t to The change in the consistency output vector within a time period, represents the change of the augmented control strategy, is the voltage control mapping matrix of the power grid area r at time t.

2. The voltage drive control method of the distribution network considering the change of communication topology according to claim 1 is characterized in that: After collecting the current node voltage, the method further includes: Calculating a sensitivity vector according to the current node voltage, wherein the sensitivity vector represents the degree of change of the node voltage with the output power of the flexible power distribution device; A voltage control mapping matrix is ​​established according to the sensitivity vector, wherein the voltage control mapping matrix represents a node voltage matrix corresponding to each of the power grid areas.

3. The voltage drive control method of the distribution network considering the change of communication topology according to claim 2, characterized in that: Calculating a sensitivity vector according to the current node voltage includes: According to the current node voltage through the formula Calculate the sensitivity vector, where r represents the number of the power grid area, represents the sensitivity vector of the grid area r, N r represents the number of controllable independent variables of the flexible power distribution equipment in the power grid area r, V r represents the current node voltage matrix of the grid area r, F r represents the output power of the flexible power distribution equipment in the power grid area r, t represents the operation control time of the power grid area, Indicates the operation control time interval of the power grid area.

4. The voltage drive control method of the distribution network considering the change of communication topology according to claim 2, characterized in that: According to the sensitivity vector, a voltage control mapping matrix is ​​established, including: By formula Establish a voltage control mapping matrix, where represents the voltage control mapping matrix of the grid area r, M r represents the number of all grid nodes in the grid area r, N r is the number of controllable independent variables of the flexible power distribution equipment in the grid area r, yes The set of elements from rows 1 to M and columns 1 to N, , represents the sensitivity vector of the grid region r, yes The set of elements from rows 1 to M and columns 1 to N+1.

5. The voltage drive control method of the distribution network considering the change of communication topology according to claim 1, characterized in that: Construct voltage-controlled trigger conditions, including: By formula The voltage control trigger condition is constructed, wherein: represents the current node voltage vector of the measurement node in the grid region r at time t, represents the voltage reference value vector of the measurement node in the grid area r at time t, is the voltage controlled trigger threshold.

6. The voltage drive control method of the distribution network considering the change of communication topology according to claim 1, characterized in that: Establishing a communication topology adjacency matrix according to the effective communication path includes: By formula A communication topology adjacency matrix is ​​established according to the effective communication path, where H is the number of the power grid areas. If the power grid area r can receive the information of the power grid area s, then ,otherwise .

7. A voltage drive control device for a distribution network taking into account changes in communication topology, characterized in that: include: A collection unit, used to obtain a plurality of initial power distribution parameters of a power grid area, adjust the output power of a flexible power distribution device, and collect a current node voltage, wherein the power grid area includes a flexible power distribution device, and the initial power distribution parameters include at least an initial node voltage of the power grid area; A first establishing unit is used to construct a voltage control trigger condition, and when the current node voltage satisfies the voltage control trigger condition, obtain a valid communication path of the power grid area, and establish a communication topology adjacency matrix according to the valid communication path, wherein the communication topology adjacency matrix is ​​a matrix representing the communication relationship between each of the power grid areas; A control unit, used to establish a voltage control model according to the communication topology adjacency matrix, solve the voltage control model, obtain the current output power of the flexible power distribution device, and control the output power of the flexible power distribution device to be the current output power, wherein the voltage control model is a model for controlling the output power of the flexible power distribution device by voltage when the communication topology of the power grid area changes; The control unit comprises: The third calculation module is used to calculate the The consistency output vector is calculated according to the communication topology adjacency matrix, wherein, represents the consistency output vector, represents the communication topology adjacency matrix of the power grid area r at time t, represents the current node voltage matrix of the grid area r at time t, represents the current node voltage matrix of the power grid area s at time t, is the voltage reference value of the grid area r at time t, Indicates whether the grid area r can obtain the voltage reference value. If so, then ,otherwise , H r A set of adjacent regions representing the power grid region; The second establishing module is used to establish a voltage control model according to the consistency output vector: ,in, Indicates t to The change in the consistency output vector within a time period, represents the change of the augmented control strategy, is the voltage control mapping matrix of the power grid area r at time t.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the voltage drive control method for the distribution network considering the change of communication topology as described in any one of claims 1 to 6.

9. An electronic device, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include a method for executing the voltage drive control method of the distribution network considering the communication topology change as described in any one of claims 1 to 6.

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