Intelligent Substation Simulation Test Method, Device, Equipment and Storage Medium

Abstract

The present invention discloses an intelligent substation simulation test method, device, equipment and storage medium. The intelligent substation simulation test method includes: obtaining a main wiring diagram of the intelligent substation to be measured and a substation configuration description file; establishing a topological relationship between primary equipment and secondary equipment in the main wiring diagram based on the substation configuration description file; determining the secondary equipment of the interval to be measured in the main wiring diagram as the object to be measured; constructing a minimum test system based on the determined associated primary equipment and secondary equipment of the object to be measured; matching system parameters and simulated fault point parameters based on the minimum test system; and evaluating the test correctness of the intelligent substation based on the minimum test system, system parameters and simulated fault point parameters.

Description

Technical Field

[0001] The embodiments of the present invention relate to simulation test technologies, and particularly to an intelligent substation simulation test method, device, equipment, and storage medium. Background Art

[0002] In an intelligent substation, traditional cable wiring is no longer used in engineering, and fiber optic cables are used instead. High-integration and low-power electronic components are widely used in various electronic devices to achieve the automatic control of the substation.

[0003] During the construction of an intelligent substation, appropriate equipment and parameters need to be selected based on the needs of the power consumption area to complete the construction of the intelligent substation. Before actual construction, it is necessary to perform simulation verification on the equipment selection, line distribution, equipment parameters, etc. of the intelligent substation to ensure the correctness of the construction plan of the intelligent substation. In the prior art, the simulation verification of the construction plan of the intelligent substation mainly adopts the method of digital transient simulation, and the verification of the construction plan is realized by establishing a complete simulation model of the intelligent substation to simulate the actual operation. However, during the process of establishing a digital transient simulation model, a high requirement for the construction fineness of the model leads to a large number of required parameters, such as line distribution parameters, distributed capacitance of the main transformer winding, etc. In order to achieve protection simulation convergence, it is necessary to select from a variety of model algorithms, and the model parameters and model step size also need to be continuously adjusted, which requires a relatively high level of professional knowledge of the modeling personnel. Moreover, when the construction plan is modified, the simulation model and parameters all need to be reset. In addition, when using transient simulation for the whole-station simulation, the hardware cost is high, and sufficient analog or digital output interfaces are required. Summary of the Invention

[0004] The present invention provides an intelligent substation simulation test method, device, equipment, and storage medium to realize the construction of the minimum test system for the intelligent substation, complete the qualitative test of the intelligent substation, and reduce the workload and cost in the early stage of the construction of the intelligent substation.

[0005] In a first aspect, the embodiments of the present invention provide an intelligent substation simulation test method, including:

[0006] Obtain the main wiring diagram of the intelligent substation to be measured and the substation configuration description file;

[0007] Based on the substation configuration description file, establish the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram;

[0008] Determine the secondary equipment of the measured interval from the main wiring diagram as the object to be measured;

[0009] Based on the object to be measured, determine the associated primary equipment and secondary equipment to construct a minimum test system;

[0010] Match the system parameters and the simulated fault point parameters based on the minimum test system;

[0011] Evaluate the test correctness of the intelligent substation based on the minimum test system, the system parameters, and the simulated fault point parameters.

[0012] Optionally, establishing the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram based on the substation configuration description file includes:

[0013] Analyze the substation configuration description file to obtain the logical nodes and GOOSE data sets of the primary equipment and the secondary equipment of the intelligent substation;

[0014] Associate the logical nodes with the intervals in the main wiring diagram;

[0015] Associate the GOOSE data sets with the primary equipment in the main wiring diagram.

[0016] Optionally, constructing the minimum test system based on the determined associated primary equipment and secondary equipment of the object under test includes:

[0017] Determine the interval under test based on the object under test;

[0018] Determine the primary equipment associated with the object under test based on the topological relationship as the associated object;

[0019] Construct a minimum test system based on the object under test and the associated object.

[0020] Optionally, the system parameters include power supply parameters, load parameters, line branch parameters, main transformer branch parameters, and CT transformation ratios;

[0021] Among them, the line branch parameters include line positive sequence impedance, line length, branch type, and line CT transformation ratio;

[0022] The main transformer branch parameters include the rated voltage of each side of the main transformer, the short-circuit voltage of each side of the main transformer, the wiring method of each side of the main transformer, the transformation ratio of each side of the main transformer, the transformation ratio of the common winding, and the transformation ratio of the low-voltage side winding;

[0023] The CT transformation ratio includes CT transformation ratio parameters and CT polarities.

[0024] Optionally, the simulated fault point parameters include the fault node position, fault branch information, and analog quantities.

[0025] Optionally, evaluating the test correctness of the intelligent substation based on the minimum test system, the system parameters, and the simulated fault point parameters includes:

[0026] Establish a matrix equation for the intelligent substation based on the main wiring diagram and the topological relationship;

[0027] Input the system parameters and the simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation.

[0028] Optionally, the inputting the system parameters and the simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation includes:

[0029] Input the system parameters and the simulated fault point parameters into the matrix equation to obtain fault quantities;

[0030] Output the fault quantities to the minimum test system to obtain the GOOSE signals of the object under test;

[0031] Evaluate whether the intelligent substation is correct based on the expected actions of the object under test and the GOOSE signals.

[0032] In a second aspect, an embodiment of the present invention further provides an intelligent substation simulation test device, including:

[0033] An acquisition module, configured to acquire the main wiring diagram of the intelligent substation under test and the substation configuration description file;

[0034] An analysis module, configured to establish the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram based on the substation configuration description file;

[0035] A determination module, configured to determine the secondary equipment of the interval under test from the main wiring diagram as the object under test;

[0036] A construction module, configured to construct a minimum test system based on the determined associated primary equipment and secondary equipment of the object under test;

[0037] A matching module, configured to match system parameters and simulated fault point parameters based on the minimum test system;

[0038] An evaluation module, configured to evaluate the test correctness of the intelligent substation based on the minimum test system, the system parameters, and the simulated fault point parameters.

[0039] In a third aspect, an embodiment of the present invention further provides an intelligent substation simulation test device, the device includes:

[0040] One or more processors;

[0041] A storage device, configured to store one or more programs,

[0042] When the one or more programs are executed by the one or more processors, the one or more processors implement the intelligent substation simulation test method as described in the first aspect.

[0043] In a fourth aspect, an embodiment of the present invention further provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the intelligent substation simulation test method as described in the first aspect when executed by a computer processor.

[0044] The present invention obtains the main wiring diagram of the intelligent substation and the substation configuration description file, and then constructs a minimum test system based on the main wiring diagram of the intelligent substation, the substation configuration description file, and the object under test, converting the simulation test of the entire intelligent substation into partial simulation and test of the minimum test system, thereby effectively reducing the size of the digital model for simulating the intelligent substation, the requirement for construction fineness, and the requirements for computing power and hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a flowchart of the intelligent substation simulation test provided by Embodiment 1 of the present invention;

[0046] Figure 2 is a schematic structural diagram of an intelligent substation simulation test device provided by Embodiment 2 of the present invention;

[0047] Figure 3 is a schematic structural diagram of an electronic device provided by Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0049] Embodiment 1

[0050] Figure 1 is a flowchart of the intelligent substation simulation test provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of simulating and testing an intelligent substation. The method can be executed by an intelligent substation simulation test device, which can be implemented by software and / or hardware and can be configured in a computer device, such as a server, a workstation, a personal computer, etc. The method specifically includes the following steps:

[0051] Step 110: Obtain the main wiring diagram of the intelligent substation to be tested and the substation configuration description file.

[0052] Intelligent substations adopt reliable, economical, integrated, low-carbon, and environmentally friendly equipment and designs. With requirements such as digitalization of all-station information, networking of communication platforms, standardization of information sharing, integration of system functions, compactness of structural design, intelligence of high-voltage equipment, and visualization of operation status, they can support real-time online analysis and control decision-making of the power grid, thereby improving the operation reliability and economy of the entire power grid. In intelligent substations, basic functions such as automatic information collection, measurement, control, protection, metering, and detection can be achieved. At the same time, they have advanced functions such as supporting real-time automatic control, intelligent regulation, online analysis and decision-making, and collaborative interaction of the power grid.

[0053] Intelligent substations mainly include two parts: intelligent high-voltage equipment and the substation unified information platform. Intelligent high-voltage equipment mainly includes intelligent transformers, intelligent high-voltage switchgear, electronic current transformers, etc. Intelligent transformers are connected to the control system by communication optical fibers, and can timely master the state parameters and operation data of the transformers. When the operation mode changes, the equipment decides whether to adjust the tap according to the voltage and power conditions of the system; when there are problems with the equipment, it will issue a warning and provide state parameters, etc., reducing the operation management cost to a certain extent, reducing potential hazards, and improving the operation reliability of the transformers.

[0054] Among them, the main wiring diagram is the electrical main wiring of an intelligent substation. The electrical main wiring mainly refers to the circuit for transmitting electric energy that is designed to meet the requirements of predetermined power transmission and operation, etc. in power plants, substations, and power systems, and shows the interconnection relationship between high-voltage electrical equipment. It is a circuit for receiving and distributing electric energy formed by connecting various switchgears, power transformers, circuit breakers, disconnectors, lightning arresters, current transformers, busbars, power cables, shunt capacitors, etc. in a certain order.

[0055] The substation configuration description file can be abbreviated as the SCD file (Substation Configuration Desciption, SCD). The substation configuration description file describes each isolated intelligent electronic device in the intelligent substation, as well as the logical connections between the intelligent electronic devices. At the same time, it also describes the instance configuration and communication parameters of all intelligent electronic devices, the communication configuration between the intelligent electronic devices, and the primary system structure of the substation, and can completely describe the process of how each isolated intelligent electronic device is integrated into a fully functional substation automation system.

[0056] In the embodiment of the present invention, it is necessary to obtain the main wiring diagram and the substation configuration description file of the measured intelligent substation to achieve a complete digital presentation of the intelligent substation, and provide a model data basis for subsequent establishment of the minimum test system and evaluation of the intelligent substation.

[0057] Step 120: Establish the topological relationship between primary equipment and secondary equipment in the main wiring diagram based on the substation configuration description file.

[0058] In the substation configuration description file, specific parameters of each primary equipment and secondary equipment in the intelligent substation, the primary equipment logical nodes of the intelligent substation, the secondary equipment logical nodes (LLN0), and the secondary equipment channel GOOSE data set (dsGOOSE) can be obtained.

[0059] In the specific implementation, the substation configuration description file is parsed to obtain the logical nodes and GOOSE data sets of the primary equipment and secondary equipment in the intelligent substation. Then, based on the obtained logical nodes and GOOSE data sets of the primary equipment and secondary equipment, the logical nodes of the primary equipment and secondary equipment are associated with the intervals in the main wiring diagram, and the GOOSE data set of the secondary equipment is associated with the primary equipment in the main wiring diagram.

[0060] Step 130: Determine the secondary equipment of the measured interval in the main wiring diagram as the object to be measured.

[0061] In the embodiment of the present invention, the simulation test of the intelligent substation is specifically divided into separately performing simulation tests on each or part of the secondary equipment to construct a minimum test system. In this step, the secondary equipment required for this test needs to be determined. The determination of the object to be measured can be made by manual selection, random selection, or sequential selection, etc. The object to be measured can be a single secondary equipment, including line protection, bus protection, transformer protection, etc.; or a group of secondary equipment within the same interval, such as line protection and line merging unit, bus protection and bus intelligent terminal, etc.

[0062] Step 140: Based on the object to be measured, determine the associated primary equipment and secondary equipment to construct a minimum test system.

[0063] In this step, based on the object to be measured, determine the interval where the object to be measured is located. Then, based on the substation configuration description file obtained in the previous step, parse to obtain the secondary equipment with a link connection relationship with the object to be measured. Then, according to the topological relationship between the primary and secondary equipment in the main wiring diagram, determine the primary equipment associated with the measured IED. Finally, jointly construct a minimum test system with the determined measured IED, as well as the primary equipment and secondary equipment associated with the measured IED.

[0064] Step 150: Match the system parameters and simulated fault point parameters based on the minimum test system.

[0065] In the previous step, a minimum test system constructed based on the object to be measured was determined. In this step, the system parameters and simulated fault point parameters of the minimum test system need to be set to realize the operation simulation of the minimum test system.

[0066] Among them, the system parameters may include power supply parameters, load parameters, line branch parameters, main transformer branch parameters, CT transformation ratios, etc. The simulated fault point parameters are the parameters of the simulated fault point, which may include the fault node location, fault branch information, analog quantities, etc.

[0067] In addition, the SV quantity of the minimum test system and the network load can also be set. Among them, the SV quantity mainly refers to the set value of electrical components. The network load is used to load and simulate the process layer network load of the minimum test system, which may include valid background messages and invalid background messages. Among them, the invalid background traffic is the message that all IEDs in the minimum test system cannot identify and receive. The invalid background traffic cannot affect the data transmission and reception of all IEDs in the minimum system, but only adds network load to the entire system; the valid background message is the SV / GOOSE message transmitted and received between all IEDs in the minimum test system; generally, the sampling value of the SV message in the valid background message is 0, and the channel in the GOOSE message is in the initial state;

[0068] Step 160: Evaluate the test correctness of the intelligent substation based on the minimum test system, system parameters, and simulated fault point parameters.

[0069] In the foregoing steps, the minimum test system is constructed by using the main wiring diagram of the intelligent substation and the substation configuration description file, and the parameters of the minimum test system are set to complete the simulation modeling of the minimum test system. In this step, the constructed minimum test system can be simulated and verified based on the set parameters. For example, when the fault point is in the action area of the IED under test, after the fault output, the tripping displacement GOOSE signal of the IED under test is received, and the tripping displacement time is within the tripping displacement time period of the IED under test, then the evaluation is correct; when the fault point is in the non-action area of the IED under test, after the fault output, the GOOSE signal received by the IED under test has no tripping displacement, then the evaluation is correct.

[0070] In the embodiment of the present invention, by obtaining the main wiring diagram of the intelligent substation and the substation configuration description file, and then constructing the minimum test system based on the main wiring diagram of the intelligent substation, the substation configuration description file, and the object under test, the simulation test of the entire intelligent substation is converted into partial simulation and test of the minimum test system, thereby effectively reducing the size of the digital model for simulating the intelligent substation, the requirements for construction fineness, and the requirements for computing power and hardware.

[0071] On the basis of the above technical solution, the main wiring diagram can be in the unit of the substation, and a topological tree structure is established according to the voltage level. The IEDs under each voltage level are associated with the corresponding graphic elements. At the same time, the main wiring diagram is drawn according to the wiring form, transformer type, and interval type.

[0072] Among them, the voltage levels of the intelligent substation may include: 500 kV, 330 kV, 220 kV, 110 kV, 66 kV, 35 kV, 20 kV, 10 kV; the wiring forms may include: single busbar without sectioning, single busbar with sectioning, single busbar section with bypass, double busbar without sectioning, double busbar with sectioning, double busbar with bypass, 3 / 2 wiring, inner bridge wiring, extended inner bridge wiring, outer bridge wiring; the transformer types may include: double-winding, three-winding; the intelligent substation bays may include: main transformer bay, busbar bay, bus coupler bay, line bay; the intelligent substation bay is composed of secondary equipment and primary equipment within the bay; the secondary equipment of the intelligent substation bay may include: protection, merging unit, intelligent terminal; the primary equipment of the intelligent substation bay may include: disconnector, earthing switch, circuit breaker.

[0073] Step 120 may include:

[0074] Step 121, parse the substation configuration description file to obtain the logical nodes and GOOSE data sets of the primary equipment and secondary equipment of the intelligent substation.

[0075] In the embodiments of the present invention, the substation communication system IEC61850 is mainly adopted as the construction standard of the intelligent substation. Through the implementation of the standard, the engineering operation standardization of the intelligent substation is realized. The engineering implementation of the intelligent substation becomes standardized, unified and transparent. The intelligent substation project established by any system integrator can understand the structure and layout of the entire substation through the SCD (system configuration) file, which plays an irreplaceable role in the development of the intelligent substation.

[0076] The IEC 61850 protocol for the substation communication system divides the substation communication system into three layers: the station control layer, the bay layer, and the process layer. The network between the station control layer and the bay layer uses the abstract communication service interface to map to the Manufacturing Message Specification (MMS), Transmission Control Protocol / Internet Protocol (TCP / IP) Ethernet or fiber optic network. The network between the bay layer and the process layer uses a single-point-to-multipoint unidirectional transmission Ethernet. The intelligent electronic devices (IEDs, measurement and control units, and relay protections) in the substation all use a unified protocol to exchange information through the network. In the protocol, each IED is used as a server, and is hierarchically modeled by subdividing into logical devices, logical nodes, data objects, and data attributes of each object. Each server contains one or more logical devices. A logical device contains logical nodes, and a logical node contains data objects. A data object is a named instance of a common data class composed of data attributes. In terms of communication, the IED also acts as a client. Any client can communicate with the server through the abstract communication service interface (ACSI) to access data objects.

[0077] In the embodiment of the present invention, the logical nodes and GOOSE data sets of the primary equipment and secondary equipment of the intelligent substation are obtained by parsing the substation configuration description file obtained in step 110.

[0078] Step 122: Associate the logical nodes with the bays in the main wiring diagram. In this step, the logical nodes are associated with the corresponding bays in the main wiring diagram.

[0079] Step 123: Associate the GOOSE data sets with the primary equipment in the main wiring diagram.

[0080] Step 140 may include:

[0081] Step 141: Determine the measured bay based on the object to be measured.

[0082] In a specific implementation, the bay where the object to be measured is located may be determined based on the substation configuration description file, and then the measured bay is determined.

[0083] Step 142: Determine the primary equipment associated with the object to be measured based on the topological relationship as the associated object.

[0084] In the previous step, the measured bay is determined based on the object to be measured. In this step, the primary equipment associated with the object to be measured needs to be found to form a complete associated system and ensure the integrity of the minimum test system.

[0085] Step 143: Construct a minimum test system based on the object under test and associated objects.

[0086] In the embodiments of the present invention, the system parameters include power supply parameters, load parameters, line branch parameters, main transformer branch parameters, and CT transformation ratios.

[0087] Among them, the power supply parameters and load parameters are used to allocate load capacity and voltage capacity according to the main transformer capacity, and allocate power supply according to the wiring type. The line branch parameters include line positive sequence impedance, line length, branch type, line CT transformation ratio, etc.; the main transformer branch parameters include rated voltage on each side of the main transformer, short-circuit voltage on each side of the main transformer, wiring method on each side of the main transformer, transformation ratio on each side of the main transformer, common winding transformation ratio, low-voltage side winding transformation ratio, etc.; the CT transformation ratio includes CT transformation ratio parameters, CT polarity, etc.

[0088] Secondly, the main transformer wiring methods may include: Y12, △1, △5, △7, △11, Y6, etc.

[0089] In the embodiments of the present invention, the simulated fault point parameters include fault node position, fault branch information, and analog quantity.

[0090] Among them, the simulated fault points may include line fault points, main transformer fault points, and bus fault points. The setting principle of the line fault point is: the model of the line fault point is a grounded short-circuit point with a transition resistance, and a node and a grounding branch are added at the fault point during the simulation of the fault. The setting principle of the main transformer fault point is: when simulating an internal fault, a fault branch is added to the main transformer node; when simulating an external fault, fault points are added to the buses on each side. The setting principle of the bus fault point is: when simulating a fault, a fault branch is added to the bus node, and a fault branch is added to the associated bus node.

[0091] In the embodiments of the present invention, the analog quantity can also be an SV quantity. The analog quantity or SV quantity is obtained according to the object under test in the minimum test system and the SV link output by the MU in the secondary equipment associated with the object under test; the GOOSE switch quantity is obtained according to the object under test in the minimum test system, the GOOSE link output by the intelligent terminal in the secondary equipment associated with the object under test, and the primary equipment state of the primary equipment associated with the object under test; the MU output can select to output SV or analog quantity, and the intelligent terminal output can select to perform switch testing or not.

[0092] During switch testing, the selected intelligent terminal does not output GOOSE signals and only receives GOOSE signals; during non-switch testing, the selected intelligent terminal outputs GOOSE signals and receives GOOSE signals.

[0093] Among them, the SV or analog quantity and GOOSE output ports are manually set according to the fiber optic interface of the actual IED to be measured.

[0094] In addition, in the embodiment of the present invention, it can also include matching the network load based on the minimum test system. The network load includes valid background messages and invalid background messages; invalid background messages are messages that cannot be recognized and received by all devices in the minimum test system, and invalid background messages cannot affect the data transmission and reception of all devices in the minimum test system, but only add network load to the minimum test system; valid background messages are SV / GOOSE messages sent and received between all devices in the minimum test system; generally, the sampling value of the SV message in the valid background message is 0, and the channel in the GOOSE message is in the initial state.

[0095] Among them, the network load can be sent according to the time mechanism and the flow mechanism.

[0096] Among them, the time mechanism is to send SV / GOOSE messages according to the IEC61850 protocol; the flow mechanism is to send SV / GOOSE messages according to the flow size.

[0097] Step 160 may include:

[0098] Step 161: Establish a matrix equation of the smart substation based on the main wiring diagram and topological relationship.

[0099] In an embodiment of the present invention, the matrix equation may be a node impedance matrix and / or a node admittance matrix. The node impedance matrix presents the relationship between current, voltage and impedance in a multi-port network in the form of a matrix. The impedance matrix is ​​also called an open-circuit impedance matrix. The impedance matrix corresponds to the admittance matrix. The difference between the two is that the impedance matrix is ​​excited by the terminal current, while the admittance matrix is ​​excited by the terminal voltage. However, the problem described by the two is essentially the same, but they are just two different ways of expressing it.

[0100] Step 162: Input the system parameters and simulated fault point parameters into the matrix equation to evaluate the test correctness of the smart substation.

[0101] In the above steps, the matrix equation of the minimum test system is constructed using the main wiring diagram of the smart substation and the substation configuration description file, and the parameters of the minimum test system are set to complete the simulation modeling of the minimum test system. In this step, the constructed minimum test system can be simulated and tested based on the set parameters. For example, when the fault point is in the action zone for the IED under test, after the fault is output, the tripping and changing position GOOSE signal of the IED under test is received, and the tripping and changing position time is within the tripping and changing position time period of the IED under test, then the evaluation is correct; when the fault point is in the non-action zone for the IED under test, after the fault is output, the GOOSE signal of the IED under test is received without tripping and changing position, then the evaluation is correct.

[0102] In an optional embodiment, step 162 includes:

[0103] Step 1621: Input the system parameters and simulated fault point parameters into the matrix equation to obtain the fault quantity;

[0104] Step 1622: Output the fault quantity to the minimum test system to obtain the GOOSE signal of the object under test;

[0105] Step 1623: Evaluate whether the intelligent substation is correct based on the expected actions of the object under test and the GOOSE signal.

[0106] In the embodiment of the present invention, an impedance or admittance matrix of all IEDs in the substation is established. According to the fault points generated by the impedance or admittance matrix, system parameters and simulated fault point parameters, the fault quantity is calculated by combining the nodal admittance matrix algorithm, output to the minimum test system, and the GOOSE signal of the IED under test is collected. Finally, the fault output result can be evaluated.

[0107] In the embodiment of the present invention, the fault quantity output is modeled based on all IEDs in the substation to establish an impedance or admittance matrix to calculate the fault point; the fault output is to output fault data with the minimum test system as the object;

[0108] Furthermore, the impedance or admittance matrix replaces each primary equipment and secondary setting in the main wiring diagram with equivalent circuit elements to obtain the topological diagram of the whole substation circuit.

[0109] Furthermore, taking the zero-potential point as the reference point for calculating the node voltage, according to Kirchhoff's current law, the operating state of the power system can be described by node equations or loop equations. Omitting the exciting power of the transformer and the line capacitance, and representing the load with impedance, an equivalent network with N nodes (including the zero-potential point) and M branches can be obtained, as follows:

[0110]

[0111] Furthermore, the above equations can be arranged and written as

[0112]

[0113] Among them, Y 11 = y 10 + y 12 ; Y 22 = y 20 + y 23 + y 24 + y 12 ; Y 33 = y 23 + y 34 ; Y 44 = y 40 + y 24 + y 34 ; Y 12 = Y21 = -y 12 ; Y 23 = Y 32 = -y 23 ; Y 24 = Y 42 = -y 24 ; Y 34 = Y 43 = -y 34 。

[0114] Generally, for a network with n independent nodes, n nodal equations can be written and represented in matrix form as follows:

[0115]

[0116] Thus, the impedance or admittance matrix is obtained.

[0117] where Y ii is the input admittance of port i when all other ports are short - circuited.

[0118] Y ij is the transfer admittance between port j and port i when all other ports are short - circuited.

[0119] Furthermore, combine the obtained impedance or admittance matrix and the fault point generated in the foregoing steps with the existing nodal admittance matrix algorithm, calculate the fault quantity and output it to the minimum test system, and collect the GOOSE signals of the IED under test to evaluate the fault output result.

[0120] After the fault is output, the minimum test system receives the GOOSE signal fed back by the IED under test and evaluates the test result according to the GOOSE signal.

[0121] Specifically, when the fault point is in the action area for the IED under test, after the fault is output, if the trip - change GOOSE signal of the IED under test is received and the trip - change time is within the trip - change time period of the IED under test, the evaluation is correct; when the fault point is in the non - action area for the IED under test, after the fault is output, if the GOOSE signal received from the IED under test has no trip - change, the evaluation is correct.

[0122] Embodiment 2

[0123] Figure 2 FIG. is a schematic structural diagram of an intelligent substation simulation test device provided by Embodiment 2 of the present invention. The device may specifically include: an acquisition module 21, an analysis module 22, a determination module 23, a construction module 24, a matching module 25, and an evaluation module 26.

[0124] Among them:

[0125] An acquisition module 21, configured to acquire the main wiring diagram of the intelligent substation under test and the substation configuration description file;

[0126] An analysis module 22, configured to establish the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram based on the substation configuration description file;

[0127] A determination module 23, configured to determine the secondary equipment of the interval under test in the main wiring diagram as the object under test;

[0128] A construction module 24, configured to determine the associated primary equipment and secondary equipment based on the object under test to construct a minimum test system;

[0129] A matching module 25, configured to match the system parameters and the simulated fault point parameters based on the minimum test system;

[0130] An evaluation module 26, configured to evaluate the test correctness of the intelligent substation based on the minimum test system, the system parameters, and the simulated fault point parameters.

[0131] The analysis module 22 includes:

[0132] An analysis unit, configured to analyze the substation configuration description file to obtain the logical nodes and GOOSE data sets of the primary equipment and secondary equipment of the intelligent substation;

[0133] A first association unit, configured to associate the logical nodes with the intervals in the main wiring diagram;

[0134] A second association unit, configured to associate the GOOSE data sets with the primary equipment in the main wiring diagram.

[0135] The construction module 24 includes:

[0136] A first determination unit, configured to determine the interval under test based on the object under test;

[0137] A second unit, configured to determine the primary equipment associated with the object under test based on the topological relationship as the associated object;

[0138] A construction unit, configured to construct a minimum test system based on the object under test and the associated object.

[0139] In the embodiment of the present invention, the system parameters include power supply parameters, load parameters, line branch parameters, main transformer branch parameters, and CT transformation ratios;

[0140] Among them, the line branch parameters include line positive sequence impedance, line length, branch type, and line CT transformation ratio;

[0141] The main transformer branch parameters include the rated voltage of each side of the main transformer, the short-circuit voltage of each side of the main transformer, the wiring method of each side of the main transformer, the transformation ratio of each side of the main transformer, the transformation ratio of the common winding, and the transformation ratio of the low-voltage side winding;

[0142] The CT transformation ratio includes CT transformation ratio parameters and CT polarities.

[0143] The simulated fault point parameters include the fault node location, fault branch information, and analog quantities.

[0144] The evaluation module 26 includes:

[0145] An equation unit, configured to establish a matrix equation of the intelligent substation based on the main wiring diagram and topological relationship;

[0146] An evaluation unit, configured to input the system parameters and simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation.

[0147] The evaluation unit includes:

[0148] A first acquisition subunit, configured to input the system parameters and simulated fault point parameters into the matrix equation to obtain fault quantities;

[0149] A second acquisition subunit, configured to output the fault quantities to the minimum test system to obtain the GOOSE signals of the object under test;

[0150] An evaluation subunit, configured to evaluate whether the intelligent substation is correct based on the expected actions of the object under test and the GOOSE signals.

[0151] The intelligent substation simulation test device provided by the embodiments of the present invention can execute the intelligent substation simulation test method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0152] Embodiment 3

[0153] Figure 3 It is a schematic structural diagram of an electronic device provided by Embodiment 3 of the present invention. As Figure 3 shown, the electronic device includes a processor 30, a memory 31, a communication module 32, an input device 33, and an output device 34; the number of processors 30 in the electronic device can be one or more, Figure 3 taking one processor 30 as an example; the processor 30, memory 31, communication module 32, input device 33, and output device 34 in the electronic device can be connected through a bus or other means, Figure 3 taking the connection through a bus as an example.

[0154] The memory 31, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the modules corresponding to an intelligent substation simulation test method in this embodiment (for example, a fault information receiving module, a solution determination module, and a first maintenance personnel determination module in an intelligent substation simulation test device). The processor 30 executes various functional applications and data processing of the electronic device by running the software programs, instructions, and modules stored in the memory 31, that is, implements the above-mentioned intelligent substation simulation test method.

[0155] The memory 31 may mainly include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the electronic device, etc. In addition, the memory 31 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 31 may further include a memory remotely set relative to the processor 30, and these remote memories can be connected to the electronic device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0156] The communication module 32 is used to establish a connection with the display screen and implement data interaction with the display screen. The input device 33 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function control of the electronic device.

[0157] An intelligent substation simulation test device provided in this embodiment can execute the intelligent substation simulation test method provided in any embodiment of the present invention, and specifically has corresponding functions and beneficial effects.

[0158] Embodiment Four

[0159] Embodiment Four of the present invention further provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute an intelligent substation simulation test method when executed by a computer processor. The method includes:

[0160] Receiving fault information of a subway system fault, where the fault information includes a fault phenomenon and an equipment type;

[0161] Determining a solution to the subway system fault according to the fault phenomenon and equipment type, where the solution includes a professional type;

[0162] Send the solution and the fault information to the first maintenance personnel so that the first maintenance personnel can repair the subway system fault, and the professional type of the first maintenance personnel conforms to the professional type included in the solution.

[0163] Of course, for a storage medium containing computer-executable instructions provided by an embodiment of the present invention, the computer-executable instructions are not limited to the method operations described above, and can also execute relevant operations in an intelligent substation simulation test method provided by any embodiment of the present invention.

[0164] From the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software and necessary general hardware. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (FLASH), a hard disk, or an optical disc of a computer, and includes several instructions for causing a computer electronic device (which can be a personal computer, a server, or a network electronic device, etc.) to execute the methods described in various embodiments of the present invention.

[0165] It should be noted that in the embodiments of the above intelligent substation simulation test device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of mutual distinction and do not limit the protection scope of the present invention.

[0166] Note that the above is only a preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An intelligent substation simulation test method, characterized in that, it includes: Obtain the main wiring diagram of the intelligent substation to be tested and the substation configuration description file; Based on the substation configuration description file, establish the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram; The establishing the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram based on the substation configuration description file includes: Parse the substation configuration description file to obtain the logical nodes and GOOSE data sets of the primary equipment and the secondary equipment of the intelligent substation; Associate the logical nodes with the intervals in the main wiring diagram; Associate the GOOSE data sets with the primary equipment in the main wiring diagram; Determine the secondary equipment of the interval to be tested in the main wiring diagram as the object to be tested; Based on the object to be tested, determine the associated primary equipment and the secondary equipment to construct a minimum test system; The constructing a minimum test system based on the object to be tested and determining the associated primary equipment and the secondary equipment includes: Based on the object to be tested, determine the interval to be tested; Based on the topological relationship, determine the primary equipment associated with the object to be tested as the associated object; Based on the object to be tested and the associated object, construct a minimum test system; Match the system parameters and the simulated fault point parameters based on the minimum test system; Evaluate the test correctness of the intelligent substation based on the minimum test system, the system parameters and the simulated fault point parameters; The evaluating the test correctness of the intelligent substation based on the minimum test system, the system parameters and the simulated fault point parameters includes: Based on the main wiring diagram and the topological relationship, establish the matrix equation of the intelligent substation; Input the system parameters and the simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation.

2. The intelligent substation simulation test method according to claim 1, characterized in that, the system parameters include power supply parameters, load parameters, line branch parameters, main transformer branch parameters and CT transformation ratios; wherein, the line branch parameters include line positive sequence impedance, line length, branch type, line CT transformation ratio; the main transformer branch parameters include rated voltages on each side of the main transformer, short-circuit voltages on each side of the main transformer, wiring modes on each side of the main transformer, transformation ratios on each side of the main transformer, common winding transformation ratio, low-voltage side winding transformation ratio; the CT transformation ratios include CT transformation ratio parameters, CT polarities.

3. The intelligent substation simulation test method according to claim 1, characterized in that, the simulated fault point parameters include fault node positions, fault branch information and analog quantities.

4. The intelligent substation simulation test method according to claim 1, characterized in that, the inputting the system parameters and the simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation includes: Input the system parameters and the simulated fault point parameters into the matrix equation to obtain fault quantities; Output the fault quantities to the minimum test system to obtain the GOOSE signals of the object to be tested. Evaluate whether the intelligent substation is correct based on the expected actions of the object under test and the GOOSE signal.

5. An intelligent substation simulation test device, characterized in that it includes: An acquisition module for acquiring the main wiring diagram of the intelligent substation under test and the substation configuration description file; An analysis module for establishing the topological relationship between the primary equipment and the secondary equipment in the main wiring diagram based on the substation configuration description file; A determination module for determining the secondary equipment of the interval under test in the main wiring diagram as the object under test; A construction module for constructing a minimum test system based on the determined primary equipment and secondary equipment associated with the object under test; A matching module for matching the system parameters and the simulated fault point parameters based on the minimum test system; An evaluation module for evaluating the test correctness of the intelligent substation based on the minimum test system, the system parameters, and the simulated fault point parameters; The analysis module includes: An analysis unit for analyzing the substation configuration description file to obtain the logical nodes and GOOSE data sets of the primary equipment and secondary equipment of the intelligent substation; A first association unit for associating the logical nodes with the intervals in the main wiring diagram; A second association unit for associating the GOOSE data sets with the primary equipment in the main wiring diagram; The construction module includes: A first determination unit for determining the interval under test based on the object under test; A second unit for determining the primary equipment associated with the object under test based on the topological relationship as the associated object; A construction unit for constructing a minimum test system based on the object under test and the associated object; The evaluation module includes: An equation unit for establishing a matrix equation of the intelligent substation based on the main wiring diagram and the topological relationship; An evaluation unit for inputting the system parameters and the simulated fault point parameters into the matrix equation to evaluate the test correctness of the intelligent substation.

6. An intelligent substation simulation test device, characterized in that the device includes: One or more processors; A storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the intelligent substation simulation test method according to any one of claims 1-4.

7. A storage medium containing computer-executable instructions, characterized in that the computer-executable instructions are used to execute the intelligent substation simulation test method according to any one of claims 1-4 when executed by a computer processor.

Images