A power system safety control measure generation method, device, equipment and medium

Abstract

The application discloses a power system safety control measure generation method, device, equipment and medium. The power system safety control measure generation method obtains basic information of a current fault of a power system; inputs the basic information of the current fault of the power system into a preset safety control strategy model; the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model; searches for a safety control strategy that satisfies the fault constraint, the monitoring constraint and the topology constraint in the strategy constraint model; and obtains an action constraint in an action constraint model corresponding to the searched safety control strategy as a safety control measure. The safety control strategy model is unified, standardized and fine, the system model is abstracted into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, the logical relationship of each part of the safety control system is clearer, and thus the generated safety control measure is more accurate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power system automation, and particularly relates to a power system safety control measure generation method, device, equipment and medium. BACKGROUND

[0002] The power grid safety control system is the second line of defense for power grid safety. In order to ensure the safe operation of China's ultra-high voltage AC / DC large power grid, a large number of power grid safety control systems have been built. Generally, the existing safety control system is divided into three layers, including a master station layer, a substation layer and an execution station layer, and each substation is connected with multiple execution stations. In the safety control system, model and measurement data, fault information come from each execution station and each substation, and the core strategy processing is completed in the master station host, and then finally issued to the execution station through the substation for implementation. The security and stability control system of each region is composed of the security automatic devices of the master station, substation and execution station in the jurisdiction, and after the occurrence of power grid operation failure, the safety control actions such as machine tripping and line tripping are performed according to the operation mode and control strategy to ensure the stable operation of the power grid.

[0003] In recent years, with the rapid development of ultra-high voltage AC / DC technology and new energy, a new energy high proportion and high proportion of sending type sending end power grid and a multi-direct current feeding and high proportion of distributed new energy access receiving end power grid have been formed, and the operation characteristics of the power grid have changed profoundly, thus a relatively complex ultra-high voltage cross-region direct current safety control system has been gradually formed. Due to the difference of the direct current sending and receiving end power grid system protection function, the direct current safety control strategies are not the same. At present, the commonly used safety control strategy modeling method is to analyze the fault form, operation mode, action value and action form of the different cross-region direct current and regional system protection related safety control system strategy table respectively, and form independent safety control strategy model, and a unified safety control strategy model has not been formed. In the online security analysis application function of the large power grid, the service calling method based on the safety control strategy model has not been widely applied. SUMMARY

[0004] The purpose of the present application is to provide a power system safety control measure generation method, device, equipment and medium, which is suitable for AC / DC hybrid large power grid, and solves the problem that there is no unified, standardized and fine model for the safety control strategy of the power system at present, which leads to the problem that accurate safety control strategy cannot be obtained.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A power system safety control measure generation method, comprising the following steps:

[0007] Obtaining the basic information of the current fault of the power system;

[0008] Input basic information of the current fault of the power system into a preset safety control strategy model; wherein, the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model;

[0009] Search for a safety control strategy in the strategy constraint model that satisfies the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model at the same time;

[0010] Obtain the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure.

[0011] As an optional solution of the present application, in the step of inputting the basic information of the current fault of the power system into the preset safety control strategy model, the safety control strategy model is obtained in the following way:

[0012] Obtain basic information of a safety control system to generate a safety control system model;

[0013] Obtain a grid operation mode specified in the safety control system and a fault type specified in the safety control system from the safety control system model;

[0014] Classify the grid operation mode specified in the safety control system, obtain device members, device types, device states and power flow target values for each type of grid operation mode, and input them into the topology constraint model;

[0015] Classify the fault type specified in the safety control system, input the fault type, fault name and fault on-off state into the fault constraint model for each type of fault;

[0016] For the trigger condition of each type of fault, input the fault member, member device type, monitoring variable, monitoring condition and monitoring value into the monitoring constraint model;

[0017] Combine the topology constraint model, the fault constraint model and the monitoring constraint model into the strategy constraint model in a logical expression combination manner, and input the threshold value, control amount, reserved amount and action principle of the strategy into the strategy constraint model;

[0018] For each type of strategy constraint condition, input the corresponding safety control action measure, including the action measure type, device name, device type, adjustment target value and action time delay, into the measure constraint model.

[0019] As an optional solution of the present application, the topology constraint in the topology constraint model is classified into: the state of a press plate set by a human being in advance; the on-off state of a unit, a line and a transformer automatically identified through electrical quantities and switch quantities of the unit, the line and the transformer; control information transmitted by a remote control system.

[0020] As an optional solution of the present application, the fault constraints in the fault constraint model are classified into: N-1 fault and N-m fault; single-phase ground short-circuit fault, two-phase short-circuit fault, three-phase short-circuit fault, same-phase permanent fault and different-phase permanent fault; DC commutation failure, DC blocking fault and DC pole blocking restart; overload, low frequency, low voltage, high frequency and high voltage fault.

[0021] As an optional solution of the present application, the monitoring constraints in the monitoring constraint model are classified into: active power, reactive power, voltage, current, phase angle, frequency, electric quantity and rotating speed; tripping signal, reclosing signal and fault phase; device commissioning state and device running state.

[0022] As an optional solution of the present application, the strategy constraints in the strategy constraint model are classified into: triggering measure threshold, control quantity and reserved quantity; maximum generator tripping quantity / number, maximum load shedding quantity / number and maximum DC modulation quantity / modulated DC bar number; generator tripping priority model, load shedding priority model, overload control model, reserved station designated number generator model and specified device removal model.

[0023] As an optional solution of the present application, the action constraints in the action constraint model are classified into: generator tripping, load shedding, capacitor tripping, power supply grid connection line tripping and terminal load feeder tripping; DC boosting, DC descending, unit power adjustment and load power adjustment; starting, circuit breaker opening and closing and switch opening and closing.

[0024] Based on the same inventive concept, the second aspect of the present application provides an electric power system security and control measure generation device, comprising:

[0025] An acquisition module is configured to acquire basic information of a current fault of an electric power system;

[0026] An input module is configured to input the basic information of the current fault of the electric power system into a preset security and control strategy model;

[0027] A search module is configured to search, in the strategy constraint model, a security and control strategy that simultaneously satisfies fault constraints, monitoring constraints and topology constraints in a fault constraint model, a monitoring constraint model and a topology constraint model;

[0028] A security and control measure generation module is configured to acquire an action constraint in an action constraint model corresponding to the searched security and control strategy as a security and control measure.

[0029] Based on the same inventive concept, the third aspect of the present application provides an electronic device comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the above-mentioned electric power system security and control measure generation method.

[0030] Based on the same inventive concept, the fourth aspect of the present application provides a computer readable storage medium, which stores at least one instruction, and the at least one instruction is executed by a processor to implement the power system safety control measure generation method.

[0031] The present application has the following advantages:

[0032] The present application provides a power system safety control measure generation method, which comprises the following steps: obtaining basic information of a current fault of a power system; inputting the basic information of the current fault of the power system into a preset safety control strategy model; wherein the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model; searching for a safety control strategy in the strategy constraint model, which satisfies the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model; and obtaining the action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure. Through the above steps, the present application establishes a unified, standardized and fine safety control strategy model, abstracts the system model into five basic elements of topology constraint, monitoring constraint, fault constraint, strategy constraint and action constraint, makes the logical relationship of each part of the safety control system clearer, and thus generates more accurate safety control measures. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are part of the specification, serve to further understand the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 It is a typical safety control system basic structure diagram in the embodiment of the present application.

[0035] Figure 2 It is a safety control strategy model structure diagram in the embodiment of the present application.

[0036] Figure 3 It is an object-oriented technology-based safety control strategy modeling entity class schematic diagram in the embodiment of the present application.

[0037] Figure 4 It is a power flow calculation flowchart based on the safety control strategy model service in the embodiment of the present application.

[0038] Figure 5 It is a structural block diagram of a power system safety control measure generation device in the embodiment of the present application.

[0039] Figure 6 It is a structural block diagram of an electronic device in the embodiment of the present application. DETAILED DESCRIPTION

[0040] The present application will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0041] The following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical terms used in the present application have the same meanings as generally understood by those skilled in the art. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0042] Term explanation

[0043] Security and stability control system: It is an important defense line to ensure the safe and stable operation of the power grid. It is a control system that, when the system is in an emergency state, restores the system to a normal operating state by executing various emergency control measures. According to the type of power grid, the security and stability control system can be divided into alternating current security and stability control system and direct current security and stability control system. The alternating current security and stability control system includes various safety automatic devices, and the direct current security and stability control system can be divided into sending end direct current security and stability control system and receiving end direct current security and stability control system according to the direct current sending and receiving end.

[0044] Embodiment 1

[0045] The embodiment 1 of the present application provides a security and stability control measure generation method for a power system, which comprises the following steps:

[0046] S100, monitoring the power grid to determine whether a fault occurs, and obtaining basic information of the current fault of the power system when the fault occurs. For example, according to the power grid operating mode of the base state flow, whether a fault or device action occurs in the power grid is monitored. When a fault or device action occurs, the basic information of the current fault is obtained.

[0047] S200, inputting the basic information of the current fault of the power system into a preset security and stability control strategy model; wherein the security and stability control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model.

[0048] It should be noted that the present application mainly models the security and stability control strategy (referred to as security and stability control strategy). The security and stability control strategy is completed by the control devices at all levels in the security and stability control system.

[0049] It should be noted that the security and stability control system is usually designed according to the principle of hierarchical zoning, and is divided into a control layer and an execution layer. The control layer and the execution layer can be designed into a multi-layer structure according to the needs of the control strategy. For example, the basic structure of a typical security and stability control system can be divided into three layers: a first control layer, a second control layer, and a third execution layer. The first control layer is composed of one or more master station systems, the second control layer is composed of multiple substation systems, and the third execution layer is composed of multiple execution station systems. The basic structure of a typical security and stability control system is shown in Figure 1 According to the system structure shown in Figure 1 The present application further integrates the security and stability control system structure into a two-layer model structure, with the upper layer being a control unit model responsible for managing the entire system and the lower layer being an execution unit model with actual execution functions. This makes the logical relationship of the security and stability control system more clear and facilitates the implementation of security and stability control strategy modeling.

[0050] Based on the two-layer structure security and stability control system model, the present application designs a security and stability control strategy model. By summarizing and classifying the basic structure and main features of the security and stability control strategy, the security and stability control strategy is abstracted into five basic elements: topology constraint, monitoring constraint, fault constraint, strategy constraint, and action constraint. Then, a reasonable data structure is designed to finally realize the universal description of the security and stability control strategy. The security and stability control strategy model structure is shown in Figure 2 .

[0051] In the security and stability control strategy model structure: the topology constraint is described by the mode members that determine the operation mode of the power grid; the fault constraint is described by the fault sets of various fault types; the monitoring constraint is described by the monitoring variables or fault members with monitoring functions, and the fault members also constitute the fault sets; a variety of fault sets and operation modes are combined to form different strategy models to describe the main operation control parameters of the corresponding strategy, i.e., the strategy constraint, such as the triggering threshold and action value; and the action constraint is composed of a series of security and stability control actions determined by the strategy constraint set, and the number of the action set is consistent with the number of the model in the strategy constraint.

[0052] The analysis of the above-mentioned five types of elements is as follows:

[0053] 1. Topology constraint

[0054] The topology constraint is mainly used to distinguish the operation mode of the current power grid. The security and stability control device can give the corresponding security and stability control strategy by recognizing the topology structure of the power grid. The topology constraint can be mainly divided into the following three types:

[0055] 1) The state of the pressure plate set by human beings in advance.

[0056] 2) The automatic recognition of the on-off state of the units, lines, and transformers by the electrical and switching values of the units, lines, and transformers.

[0057] 3) Control information transmitted from the remote control system.

[0058] 2) Fault constraints

[0059] Faults in the security and stability control system trigger corresponding actions of the control devices. According to the fault type, the faults can be classified into section faults and single equipment faults, and the single equipment faults include line faults, transformer faults, bus faults, etc. According to the specific content of the faults, the faults can be classified into:

[0060] 1) N-1 faults and N-m faults.

[0061] 2) Single-phase ground short-circuit faults, two-phase short-circuit faults, three-phase short-circuit faults, same-phase permanent faults, and different-phase permanent faults.

[0062] 3) DC commutation failure, DC blocking fault, and DC pole blocking restart.

[0063] 4) Overload, low frequency, low voltage, high frequency, and high voltage faults.

[0064] 3) Monitoring constraints

[0065] The monitoring constraints are the value ranges of the operating parameters of the main electrical elements concerned by the control devices, and are used to describe the action starting conditions and thresholds of the related strategies. The monitoring constraint types can be classified into:

[0066] 1) Active power, reactive power, voltage, current, phase angle, frequency, electric quantity, and rotating speed.

[0067] 2) Tripping signal, reclosing signal, and fault phase.

[0068] 3) Equipment commissioning state and equipment operating state.

[0069] 4) Strategy constraints

[0070] The strategy constraints are a series of constraint conditions for controlling the control actions. One control strategy is determined by the topology constraints, fault constraints, and monitoring constraints. According to the different combination modes of the three, the strategy constraint types are not the same, and can be classified into the following three types:

[0071] 1) Trigger measure threshold, control quantity, and reserved quantity.

[0072] 2) Maximum generator tripping quantity / generator tripping number, maximum load shedding quantity / load shedding number, maximum DC modulation quantity / modulation DC number.

[0073] 3) Generator tripping priority model, load shedding priority model, overload control model, reserved number of generators in the station designation model, and specified equipment removal model, etc.

[0074] 5) Action constraints

[0075] The security and control system needs to deal with various critical instability conditions in the power system, and also needs to effectively control the spread of system faults, which determines the complexity and diversity of the control measure structure. The action constraint needs to be as clear and direct as possible, and according to the action measures of different security and stability control systems, it can be divided into the following categories:

[0076] 1) Cut machine, cut load, cut capacitor, cut power grid line, cut terminal load feeder.

[0077] 2) DC boost, DC drop, unit power adjustment, load power adjustment.

[0078] 3) Start, circuit breaker on-off, knife switch on-off.

[0079] Based on the above analysis results, it needs to be explained that for the convenience of modeling, the present application regards a complete security and control strategy as a multi-input, multi-output control link, wherein the topological constraint, the fault constraint and the monitoring constraint are different types of inputs of the control link, and each type of input can be composed of several input conditions; and the action constraint is defined as the output of the control link, and the same output can also have several. In order to simplify the logic operation, the different types of "inputs" must be operated with "and" logic, and the same type of "input" can be "and" or "or" logic.

[0080] Based on the above analysis of the five types of elements, the security and control strategy model in step S200 is obtained as follows:

[0081] Step 1: Obtain the basic information of the security and control system, and generate a security and control system model; specifically, the basic information of the security and control system includes the system ID, Chinese name, system on-off state, etc. of the security and stability control system. Obtain the power grid operation mode specified in the security and control system and the fault type specified in the security and control system from the security and control system model.

[0082] Step 2: Classify the power grid operation mode specified in the security and control system, and for each type of power grid operation mode, obtain variables such as device members, device types, device states and power flow target values, and input them into the topological constraint model.

[0083] Step 3: Classify the fault types specified in the security and control system, and for each fault, input parameters such as fault type, fault name and fault on-off state into the fault constraint model.

[0084] Step 4: For the trigger condition of each fault, input parameters such as fault members, member device types, monitoring variables, monitoring conditions and monitoring values into the monitoring constraint model.

[0085] Step 5: According to the topological constraint model, the fault constraint model and the monitoring constraint model generated in steps 2-4, the policy constraint model is formed in a logical expression combination manner, and the threshold value, control quantity, reservation quantity and action principle of the policy are recorded in the policy constraint model.

[0086] Step 6: For each type of policy constraint condition, the corresponding safety control action measures, including the action measure type, device name, device type, adjustment target value and action time delay, are recorded in the measure constraint model.

[0087] S300, searching for a safety control policy in the policy constraint model that satisfies the fault constraint, monitoring constraint and topological constraint in the fault constraint model, the monitoring constraint model and the topological constraint model at the same time.

[0088] S400, obtaining the action constraint in the action constraint model corresponding to the searched safety control policy as a safety control measure.

[0089] The application classifies, merges and integrates the safety automatic devices, the safety and stability control system, the AC / DC frequency coordinated control system and other safety control systems, classifies all the safety control systems into a "two-layer model structure", the upper layer is a control unit model responsible for managing the whole system, and the lower layer is an execution unit model with actual execution function. Based on the "two-layer model structure" of the safety control system, the system model is abstracted into five basic elements of topological constraint, monitoring constraint, fault constraint, policy constraint and action constraint, so that the logical relationship of each part of the safety control system is more clear. The input information of the safety control system is classified into three types of fault constraint, monitoring constraint and topological constraint; wherein the fault constraint is more finely divided, not only considering the single power system fault, but also considering the N-1, N-m and other fault types, and comprehensively and accurately analyzing the power grid operation risk. The application simplifies the two-layer logical structure on the premise of ensuring the complete information of the three-layer control system safety automatic device by using the methods of extracting key information, designing reasonable data structure and optimizing service process, and ensures the comprehensiveness and accuracy of policy modeling.

[0090] According to the above steps, the structured modeling of all safety control policies in the safety and stability control system is completed, and the entity class diagram of the safety control policy modeling based on object-oriented technology is as shown in Figure 3 .

[0091] Next, the application takes the dispatcher power flow as an example, and the power flow calculation flowchart based on the safety control policy model service is as shown in Figure 4 .

[0092] Firstly, the dispatcher tidal flow starts the calculation, according to the base state tidal flow power grid operation mode, monitor whether the power grid failure or device action occurs. If no failure occurs, end the tidal flow program; if failure occurs, call the security control strategy service, based on the strategy table established by the security control strategy model, search the security control action measures that meet the topological constraints, fault constraints and monitoring constraints together, return to the dispatcher tidal flow application, the dispatcher tidal flow application judges whether the security control action measures are searched. If the security control measures are searched, the corresponding action is performed according to the security control measure model, and the tidal flow calculation is carried out; if not, no action is taken, and the tidal flow calculation is carried out normally, and the program ends after the tidal flow calculation.

[0093] Embodiment 2

[0094] As Figure 5 shown, based on the same inventive concept, the embodiment 2 of the present application also provides a power system security control measure generation device, comprising:

[0095] The acquisition module is configured to acquire basic information of a current fault of the power system.

[0096] The input module is configured to input the basic information of the current fault of the power system into a preset security control strategy model.

[0097] In the input module, the security control strategy model is acquired in the following manner:

[0098] Step 1: acquiring basic information of the security control system to generate a security control system model; specifically, the basic information of the security control system includes: system ID, Chinese name, system on-off state, etc. of the security and stability control system. The power grid operation mode specified in the security control system and the fault type specified in the security control system are acquired from the security control system model.

[0099] Step 2: classifying the power grid operation mode specified in the security control system, acquiring variables such as device members, device types, device states and tidal flow target values for each type of power grid operation mode, and inputting the variables into the topological constraint model.

[0100] Step 3: classifying the fault type specified in the security control system, inputting parameters such as fault type, fault name and fault on-off state into the fault constraint model for each type of fault.

[0101] Step 4: inputting parameters such as fault members, member device types, monitoring variables, monitoring conditions and monitoring values into the monitoring constraint model for the triggering conditions of each type of fault.

[0102] Step 5: forming a strategy constraint model in a logical expression combination manner according to the topological constraint model, the fault constraint model and the monitoring constraint model generated in steps 2-4, inputting the threshold value, control amount, reserved amount and action principle of the strategy into the strategy constraint model.

[0103] Step 6: for each type of policy constraint condition, corresponding safety control action measures are recorded into the measure constraint model, including action measure type, device name, device type, adjustment target value and action delay and other parameters.

[0104] The search module is configured to search, in the policy constraint model, a safety control policy that simultaneously satisfies the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model.

[0105] The safety control measure generation module is configured to obtain an action constraint in an action constraint model corresponding to the searched safety control policy as a safety control measure.

[0106] Embodiment 3

[0107] As shown in Figure 6 the same inventive concept, the embodiment 3 of the present application further provides an electronic device 100 for implementing the power system safety control measure generation method; the electronic device 100 comprises a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104. The memory 101 can be used to store the computer program 103, and the processor 102 can realize the steps of the power system safety control measure generation method of the embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101.

[0108] The memory 101 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required by a function (such as a sound playing function, an image playing function, etc.), and the like; the data storage area can store data (such as audio data) created according to the use of the electronic device 100, and the like. In addition, the memory 101 can include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0109] ​The at least one processor 102 can be a central processing unit (CPU), and can also be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc. The processor 102 can be a microprocessor or can also be any conventional processor, etc. The processor 102 is a control center of the electronic device 100, and is connected to various parts of the entire electronic device 100 through various interfaces and lines.

[0110] The memory 101 in the electronic device 100 stores a plurality of instructions to implement a power system safety control measure generation method, and the processor 102 can execute the plurality of instructions to implement the following:

[0111] Obtaining basic information of a current fault of a power system;

[0112] Inputting the basic information of the current fault of the power system into a preset safety control strategy model; wherein the safety control strategy model includes a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model;

[0113] Searching for, in the strategy constraint model, a safety control strategy that simultaneously satisfies the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model;

[0114] Obtaining, as a safety control measure, an action constraint in the action constraint model corresponding to the searched safety control strategy.

[0115] Embodiment 4

[0116] The modules / units integrated in the electronic device 100, if implemented in the form of software function units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on such understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment described above can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, and read-only memory (ROM).

[0117] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take 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 code.

[0118] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to produce a machine, so that the instructions executed by the computer or other programmable data processing devices produce a device that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one or more flows and / or blocks Figure 1 The functions specified in one or more flows and / or blocks

[0119] These computer program instructions can also be stored in a computer-readable memory capable of guiding a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a product including instruction devices, which implement the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one or more flows and / or blocks Figure 1 The functions specified in one or more flows and / or blocks

[0120] These computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0121] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the technical solutions of the present application. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A power system security control measure generation method characterized by comprising: The method comprises the following steps: obtaining basic information of a current fault of a power system; inputting the basic information of the current fault of the power system into a preset safety control strategy model; wherein the safety control strategy model comprises a fault constraint model, a monitoring constraint model, a topology constraint model, a strategy constraint model and an action constraint model; searching for a safety control strategy in the strategy constraint model that satisfies the fault constraint, the monitoring constraint and the topology constraint in the fault constraint model, the monitoring constraint model and the topology constraint model; obtaining an action constraint in the action constraint model corresponding to the searched safety control strategy as a safety control measure; merging and integrating a safety control system structure into a two-layer model structure, wherein an upper layer is a control unit model responsible for managing the whole system, and a lower layer is an execution unit model having an actual execution function; in the step of inputting the basic information of the current fault of the power system into the preset safety control strategy model, the safety control strategy model is obtained in the following manner: obtaining basic information of a safety control system to generate a safety control system model; obtaining a specified power grid operation mode and a fault type in the safety control system from the safety control system model; classifying the specified power grid operation mode in the safety control system, obtaining equipment members, equipment types, equipment states and power flow target values for each type of power grid operation mode, and inputting the topology constraint model; classifying the specified fault type in the safety control system, inputting the fault type, fault name and fault on-off state into the fault constraint model for each type of fault; inputting the fault member, member equipment type, monitoring variable, monitoring condition and monitoring value into the monitoring constraint model for the triggering condition of each type of fault; forming the strategy constraint model in a logical expression combination manner from the topology constraint model, the fault constraint model and the monitoring constraint model, inputting the threshold value, control amount, reserved amount and action principle of the strategy into the strategy constraint model; inputting the corresponding safety control action measure, including the action measure type, equipment name, equipment type, adjustment target value and action time delay into the action constraint model for each type of strategy constraint condition; regarding a complete safety control strategy as a multi-input and multi-output control link, wherein the topology constraint, the fault constraint and the monitoring constraint are different types of inputs of the control link, and each type of input is composed of a plurality of input conditions; the action constraint is defined as the output of the control link, and the same output also has a plurality of outputs; different types of "inputs" must be operated in "and" logic, and the same type of "input" is "and" or "or" logic; the topology constraints in the topology constraint model are divided into: the state of a pressure plate set by a human being in advance; the on-off state of a unit, a line and a transformer automatically identified through electrical quantities and switch quantities of the unit, the line and the transformer; control information transmitted from a remote control system; the strategy constraints in the strategy constraint model are divided into: a triggering measure threshold value, a control amount and a reserved amount; a maximum unit tripping amount / unit tripping number, a maximum load tripping amount / load tripping number and a maximum DC modulation amount / modulation DC number; a unit tripping priority model, a load tripping priority model, an overload control model, a reserved station designated number generator model and a specified equipment tripping model.

2. The power system security measure generating method according to claim 1, characterized by, The fault constraints in the fault constraint model are classified into N-1 fault and N-m fault; single-phase ground short-circuit fault, two-phase short-circuit fault, three-phase short-circuit fault, same-phase permanent fault and different-phase permanent fault; DC commutation failure, DC blocking fault and DC pole blocking restart; overload, low frequency, low voltage, high frequency and high voltage fault.

3. The power system security measure generating method according to claim 1, wherein The monitoring constraints in the monitoring constraint model are classified into active power, reactive power, voltage, current, phase angle, frequency, electric quantity and rotating speed; tripping signal, reclosing signal and fault phase; device commissioning state and device running state.

4. The power system security measure generating method according to claim 1, wherein The action constraints in the action constraint model are classified into generator tripping, load tripping, capacitor tripping, power supply grid connection line tripping and terminal load feeder tripping; DC boosting, DC back-down, generator power adjustment and load power adjustment; starting, circuit breaker opening and closing and switch opening and closing.

5. An electric power system security control measure generating device for implementing the electric power system security control measure generating method according to claim 1, characterized by The method comprises: an acquisition module configured to acquire basic information of a current fault of a power system; an input module configured to input the basic information of the current fault of the power system into a preset security control strategy model; a search module configured to search, in the strategy constraint model, a security control strategy that simultaneously satisfies fault constraints, monitoring constraints and topology constraints in a fault constraint model, a monitoring constraint model and a topology constraint model; a security control measure generation module configured to acquire action constraints in an action constraint model corresponding to the searched security control strategy as security control measures.

6. An electronic device, comprising: The computer readable storage medium stores at least one instruction, and the at least one instruction is executed by the processor to implement the power system security control measure generation method according to any one of claims 1 to 4.

7. A computer readable storage medium characterized in that, The computer readable storage medium stores at least one instruction, and the at least one instruction is executed by the processor to implement the power system security control measure generation method according to any one of claims 1 to 4.

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