An online full-environment simulation platform for intelligent substation systems with relay protection

Abstract

This invention discloses an online full-environment simulation platform for a relay protection smart substation system, relating to the technical field of smart grids. The platform receives real-time models and operational data of the actual relay protection smart substation system, as well as data from the simulation substation, the actual substation, the first simulated protection device running on the simulation protection server, the second simulated protection device, and the actual protection device. This establishes the foundation for full-environment simulation of the actual relay protection smart substation system. Utilizing test and training simulation servers, the platform simulates the operation of the actual relay protection smart substation system online without affecting its operation, meeting the 24 / 7 on-call needs of maintenance personnel. Furthermore, it provides full-environment simulation training for maintenance personnel, enhancing their emergency response skills.

Description

Technical Field

[0001] This invention relates to the technical field of smart grids, and more specifically, to an online full-environment simulation platform for a relay protection smart substation system. Background Technology

[0002] With the development of "digital grids," the intelligence and networking of power systems are becoming increasingly sophisticated. As a crucial data source for building "digital grids," intelligent substation systems for relay protection must first possess excellent operational safety and reliability. They must be able to operate 24 / 7 without interruption, minimizing the impact on main station operation time due to new functions or version upgrades, and meeting the needs of maintenance personnel for round-the-clock on-call duty.

[0003] In addition, as the complexity of power systems continues to increase, the power grid has set higher standards for the emergency response and fault handling capabilities of operation and maintenance personnel. It requires operation and maintenance personnel to be on duty regularly and to be familiar with the relevant skills required for duty, including the steps, procedures and methods of business operations such as substation commissioning, remote control, and daily operation and maintenance, as well as emergency handling skills in cases of power grid failure, protection alarms, system malfunctions, and network anomalies.

[0004] Currently, improving the emergency response skills of relay protection professionals at the dispatching end relies mainly on training. Current training primarily uses materials such as regulations and is conducted offline. This method fails to systematically reflect the problems and phenomena during faults and anomalies, and trainees lack practical operational and handling experience, resulting in poor training effectiveness and hindering the improvement of maintenance personnel's experience and skills. While some online simulation systems exist for dispatcher training, these systems are primarily geared towards dispatcher applications, focusing on power system frequency regulation and grid stability simulation. The training content mainly focuses on primary-side monitoring operations and grid stability maintenance, without considering typical maintenance and operational scenarios. Therefore, they cannot meet the needs of remote maintenance training simulation on the secondary side. Summary of the Invention

[0005] To address the issue of improving the emergency response skills of maintenance personnel in intelligent substation systems for relay protection, this invention proposes an online full-environment simulation platform for intelligent substation systems for relay protection. This platform simulates the operation of actual intelligent substation systems for relay protection online, meeting the needs of maintenance personnel for 24 / 7 duty and providing full-environment simulation training to enhance their emergency response skills.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] This application proposes an online full-environment simulation platform for a relay protection intelligent substation system, comprising: a data synchronization server, a test simulation server, a training simulation server, a simulation protection server, a database server, a workstation, a simulation substation switch, an actual substation switch, a simulation substation, an actual substation, and an actual protection device. The simulation protection server includes a first simulation protection server and a second simulation protection server, and the actual protection device includes a first actual protection device and a second actual protection device.

[0008] The system comprises a data synchronization server, a test simulation server, a training simulation server, a simulation protection server, a database server, a workstation, one end of a simulation substation switch, and one end of an actual substation switch, all connected to a data bus. The other end of the simulation switch is connected to one end of the simulation substation, and the other end of the simulation substation is connected to both a first simulation protection server and a first actual protection device. Multiple first simulation protection devices are deployed and run on the first simulation protection server to simulate the operation of the first actual protection device. The other end of the actual substation switch is connected to one end of the actual substation, and the other end of the actual substation is connected to both a second simulation protection server and a second actual protection device. Multiple second simulation protection devices are deployed and run on the second simulation protection server to simulate the operation of the second actual protection device.

[0009] The data synchronization server is connected to the actual relay protection intelligent substation system, receives the real-time model and real-time operation data of the actual relay protection intelligent substation system, receives data from the simulation substation, the actual substation, the first simulation protection device data, the second simulation protection device data, and the actual protection device data running on the simulation protection server, and stores them in the database server; the test simulation server runs test programs corresponding to the functions of the actual relay protection intelligent substation system to provide functional testing services; the training simulation server runs training simulation programs to provide relay protection simulation training services, and the workstation is used to deploy the operating system for the relay protection simulation training services.

[0010] Preferably, the platform further includes a general business server, which is used to provide a basic platform for simulating the operation of an actual relay protection intelligent substation system. The general business server is also used to process general business, including: resource monitoring, network communication management, data acquisition, protocol conversion, file monitoring, process management, thread management, message bus, service bus, historical database management, real-time database management, log management, and graph model management.

[0011] Preferably, the platform further includes a display device for showcasing the application results of relay protection training simulation and test simulation.

[0012] Preferably, the data synchronization server has an actual relay protection intelligent substation system model and cross-sectional data consistent with the actual relay protection intelligent substation system. It parses and transmits the data packets monitored by the actual relay protection intelligent substation system to the database server, synchronizes the actual relay protection intelligent substation system model to the general business server, and creates or updates the disk files monitored by the actual relay protection intelligent substation system to the general business server.

[0013] Preferably, the test simulation server also runs an upgrade package test program to test whether the upgrade package of the actual relay protection intelligent substation system is qualified.

[0014] Preferably, during relay protection simulation training, trainers and trainees access the training simulation program online on a workstation. The trainer sets the upper and lower limits of the number of substations included in the training simulation scenario, the enabled simulation application functions, and the simulation process. The trainer can also browse and create detailed steps for each simulation application. The trainer can also create, set, and manage historical training materials. The trainer can set the start, pause, resume, replay, and event insertion for the training. The trainer can view abnormal training events, fault handling results, training completion notifications, and individual simulation practice notifications for the trainees. Finally, the trainer provides an evaluation of the trainees' training performance.

[0015] Preferably, during relay protection simulation training, trainers and trainees call the training simulation program online on the workstation. Trainees load simulation scenarios on the workstation. The simulation scenarios include real-time teaching scenarios and historical teaching scenarios. The real-time teaching scenarios are used by trainees to complete the training plan specified by the trainers, and the historical teaching scenarios are used for trainees' daily skills training. The training simulations conducted by trainees include operation and maintenance simulation, power grid fault handling simulation, and remote control operation simulation.

[0016] Preferably, the workstation will remind the trainee of any operational anomalies or errors, as well as the trainee's temporary plans, commands, and alarm pop-ups. It will also send the trainee's analysis results and operational results information to the trainee, and send the commands and events sent by the trainee to the trainee.

[0017] Preferably, after the relay protection simulation training is completed, the training simulation server stores the entire training simulation operation process to the database server.

[0018] Preferably, the simulation substation collects, processes, and forwards information from the first actual protection device, and simultaneously receives control commands from the general business server and forwards them to the first actual protection device; the first simulation protection server supports the first simulation protection device in simulating the operation of the first actual protection device, and the second simulation protection server supports the second simulation protection device in simulating the operation of the second actual protection device.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0020] This invention proposes an online full-environment simulation platform for a relay protection intelligent substation system. This platform receives real-time models and operational data of the actual relay protection intelligent substation system, as well as data from the simulation substation, the actual substation, the first simulated protection device running on the simulation protection server, the second simulated protection device, and the actual protection device. This establishes the foundation for full-environment simulation of the actual relay protection intelligent substation system. Utilizing test and training simulation servers, the platform simulates the operation of the actual relay protection intelligent substation system online without affecting its operation, meeting the 24 / 7 on-call needs of maintenance personnel. Furthermore, it provides full-environment simulation training for maintenance personnel, improving their emergency response skills. Attached Figure Description

[0021] Figure 1 This is a structural connection diagram of an online full-environment simulation platform for a relay protection intelligent substation system proposed in an embodiment of the present invention;

[0022] Figure 2 This diagram illustrates another structural connection of the online full-environment simulation platform for the intelligent substation system with relay protection proposed in this embodiment of the invention.

[0023] Figure 3 This diagram illustrates the third structural connection of the online full-environment simulation platform for the relay protection intelligent substation system proposed in this embodiment of the invention. Detailed Implementation

[0024] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0025] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions;

[0026] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment proposes an online full-environment simulation platform for a relay protection intelligent substation system. (See also...) Figure 1 The structure shown includes: a data synchronization server, a test simulation server, a training simulation server, a simulation protection server, a database server, a workstation, a simulation substation switch, an actual substation switch, a simulation substation, an actual substation, and an actual protection device. The simulation protection server includes a first simulation protection server and a second simulation protection server, and the actual protection device includes a first actual protection device and a second actual protection device.

[0030] See Figure 1 In this embodiment, the data synchronization server, test simulation server, training simulation server, simulation protection server, database server, workstation, one end of the simulation substation switch, and one end of the actual substation switch are all connected to the data bus. The other end of the simulation switch is connected to one end of the simulation substation. The other end of the simulation substation is connected to the first simulation protection server and the first actual protection device. Multiple first simulation protection devices A are deployed and run on the first simulation protection server to simulate the operation of the first actual protection device. See also... Figure 1 There are two simulation substations and two first simulation protection servers. Multiple first simulation protection devices A are deployed and run on the two first simulation protection servers respectively.

[0031] In this embodiment, there is one actual substation. The other end of the actual substation switch is connected to one end of the actual substation. The other end of the actual substation is connected to the second simulation protection server and the second actual protection device. Multiple second simulation protection devices are deployed and run on the second simulation protection server to simulate the operation of the second actual protection device.

[0032] like Figure 1As shown, the data synchronization server is connected to the actual intelligent substation system for relay protection, receiving the real-time model and real-time operating data of the actual intelligent substation system for relay protection. In this embodiment, the real-time operating data includes call results, burst data, etc. It receives data from the simulation substation, the actual substation, the first simulation protection device data, the second simulation protection device data, and the actual protection device data running on the simulation protection server, and stores them in the database server. The data mentioned here is mirror information consistent with the actual intelligent substation system for relay protection, which can be achieved through mirroring technology to ensure the integrity and controllability of data synchronization. Mirroring technology mainly includes data mirroring and port mirroring. Data mirroring is a type of clustering technology, which involves mirroring the hard drives of two servers established on the same local area network using software or other special network equipment. The master and slave servers monitor each other's operating status through heartbeat monitoring lines. When the master server fails and stops, the slave server will take over the application of the master server in a very short time. This technology is widely used in data backup and system testing of large-scale IT information systems. Port mirroring copies packets from a specified port or packets conforming to specified rules to a destination port. This technology is widely used in switches and packet analysis and monitoring to achieve network supervision and troubleshooting. Currently, there are no precedents in China for conducting research or applying full-environment mirroring based on intelligent substation systems for relay protection.

[0033] In this embodiment, after data synchronization, data parsing, comparison, and cleaning are also involved, followed by data updates. The update principle is as follows:

[0034] (1) When synchronizing data from the relay protection smart substation system in real time, only update the real-time status of the substation and equipment models, and do not affect the relevant substations in the simulation training state.

[0035] (2) Subsequent simulation training data information should only update the simulation training state of the plant and equipment model, and should not affect the real-time state of related plants.

[0036] The test simulation server runs test programs corresponding to the functions of the actual relay protection intelligent substation system to provide functional testing services; the training simulation server runs training simulation programs to provide relay protection simulation training services, and the workstation is used to deploy the operating system for the relay protection simulation training services.

[0037] In this embodiment, the real-time model and real-time operation data of the actual relay protection intelligent substation system received by the data synchronization server provide model and data source support for training simulation and actual relay protection intelligent substation system simulation.

[0038] The simulation substation collects, processes, and forwards information from the first actual protection device, and simultaneously receives control commands from the general business server and forwards them to the first actual protection device. The first simulation protection server supports the first simulation protection device in simulating the operation of the first actual protection device, and the second simulation protection server supports the second simulation protection device in simulating the operation of the second actual protection device.

[0039] In this embodiment, an upgrade package test program also runs on the test simulation server to test whether the upgrade package of the actual relay protection smart substation system is qualified.

[0040] The test simulation server functions include substation simulation, protection device simulation, main station application simulation, test verification, and remote operation and maintenance of the main station;

[0041] By combining simulation data from simulation substations or actual substations and simulation protection devices or actual protection devices, a test simulation platform for intelligent substation systems with relay protection is built. This platform enables simulation verification of upgrades and pre-testing of functions in actual intelligent substation systems with relay protection, improving the reliability and stability of the actual intelligent substation systems with relay protection, reducing operational risks caused by functional expansion and upgrades, enabling remote operation and maintenance of the master station across manufacturers and dispatch levels, achieving remote upgrades and updates, and improving the efficiency of master station upgrade and maintenance.

[0042] The online full-environment simulation platform for the intelligent substation relay protection system proposed in this embodiment supports the access of simulation substations to simulated and actual protection devices, enabling the collection, processing, and forwarding of information from protection devices. It can also receive various control commands from the simulation master station and forward them to the protection devices, achieving operational control of the protection. The simulation substation can simulate the actual substation at the station end. Communication with the master station adopts the Southern Power Grid 103 protocol and the Southern Power Grid Master-Substation 61850 protocol, while communication with the devices adopts the Network 103 protocol and the IEC 61850 protocol.

[0043] The online full-environment simulation platform for the intelligent substation system for relay protection proposed in this embodiment supports the simulation of actual protection devices and can be connected to actual substations or simulation substations. Preferably, communication with substations is carried out using the Network 103 protocol and the IEC61850 protocol.

[0044] The online full-environment simulation platform for relay protection intelligent substation system proposed in this embodiment realizes full-function simulation of actual relay protection intelligent substation system, forming a high-fidelity full mirror of the master station, supporting the upper-level master station to establish remote connection with the lower-level master station based on the mirror, and guiding operation and maintenance.

[0045] The online full-environment simulation platform proposed in this embodiment can provide full-environment simulation training for operation and maintenance personnel. Specifically, during relay protection simulation training, trainers and trainees can call the training simulation program online on the workstation. Trainers can set the upper and lower limits of the number of substations included in the training simulation scenario, the opening of simulation application functions, and the simulation process. Trainers can also browse and compile detailed steps for each simulation application; trainers can compile, set, and manage historical teaching materials for training plans; trainers can set the start, pause, resume, replay, and event insertion for training; trainers can browse abnormal training events, fault handling results, training completion notifications, and individual simulation practice notifications for trainees; and trainers can provide evaluations of the trainees' training performance.

[0046] Similarly, trainees load simulation scenarios on their workstations. These simulation scenarios include real-time and historical lesson plan scenarios. The real-time scenario is used by trainees to complete the training plan prescribed by the trainers, while the historical scenario is used for trainees' daily skills training. The training simulations conducted by trainees include operation and maintenance simulations, power grid fault handling simulations, and remote control operation simulations.

[0047] In addition, the workstation will remind trainees of operational anomalies and errors, as well as temporary plans, commands, and alarm pop-ups. It will also send the trainees' analysis results and operational results to the trainers, and send the commands and events sent by the trainers to the trainees.

[0048] When trainers and trainees conduct relay protection simulation training, they first log in to the workstation, automatically complete registration in the registration management center, and record a unique identity ID to ensure the subscription and accurate distribution of various subsequent messages. All login, query, and application operations of the online full-environment simulation platform proposed in this embodiment require corresponding permissions to perform, as follows:

[0049] (1) All simulation functions on the platform can be assigned access permissions to different users to ensure that critical parts are not accessed by unauthorized users to the greatest extent possible.

[0050] (2) Key operations performed by users must be recorded. The records include username, operation performed, execution time, execution machine, etc., and provide query and retrieval functions for operation records.

[0051] (3) User levels should be categorized and customized as follows:

[0052] Regular users are only authorized to access and browse relevant applications on the simulation test main station, without affecting its security and stable operation;

[0053] The instructor group has all the privileges of a regular user, as well as the privileges of an instructor, such as planning, editing lesson plans, and controlling the training process.

[0054] The trainee group has all the permissions of a regular user, as well as the permissions of a trainee, such as executing training plans and performing various simulation training operations;

[0055] System Administrator – The user with the highest privileges, who, in addition to having all the permissions of the above-mentioned personnel, can also authorize various other personnel.

[0056] Security auditor – Conducts security audits of other users' operations, such as log audits and audits of important events.

[0057] (4) User login must be verified, and the platform has an automatic lock function when there is no operation for a long time.

[0058] After the relay protection simulation training is completed, the training simulation server stores the entire training simulation operation process to the database server.

[0059] Example 2

[0060] like Figure 2 As shown in the figure, this embodiment also proposes another online full-environment simulation platform for intelligent substation systems for relay protection. Compared with embodiment 1, in addition to including a data synchronization server, test simulation server, training simulation server, simulation protection server, database server, workstation, simulation substation switch, actual substation switch, simulation substation, actual substation and actual protection device, it also includes a general business server. In this embodiment, the general business server is used to provide a basic platform for simulating the operation of the actual intelligent substation system for relay protection. The general business server is also used to process general business, including: resource monitoring, network communication management, data acquisition, protocol conversion, file monitoring, process management, thread management, message bus, service bus, historical database management, real-time database management, log management and graph model management.

[0061] As described in Example 1, the data synchronization server has an actual relay protection intelligent substation system model and cross-sectional data that are consistent with the actual relay protection intelligent substation system. The data synchronization server parses and transmits the data packets monitored by the actual relay protection intelligent substation system to the database server, synchronizes the actual relay protection intelligent substation system model to the general business server, and creates or updates the disk files monitored by the actual relay protection intelligent substation system to the general business server.

[0062] Example 3

[0063] like Figure 3As shown, this embodiment also proposes a third type of online full-environment simulation platform for intelligent substation systems for relay protection. Compared with embodiment 2, in addition to including a data synchronization server, test simulation server, training simulation server, simulation protection server, database server, workstation, simulation substation switch, actual substation switch, simulation substation, actual substation, actual protection device, and general business server, it also includes a display device, which is used to display the application results of relay protection training simulation and test simulation.

[0064] The terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of the present invention are merely examples to clearly illustrate the invention and are not intended to limit the implementation of the invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of this invention.

Claims

1. An online full-environment simulation platform for a relay protection intelligent substation system, characterized in that, include: The system includes a data synchronization server, a test simulation server, a training simulation server, a simulation protection server, a database server, a workstation, a simulation substation switch, an actual substation switch, a simulation substation, an actual substation, and an actual protection device. The simulation protection server includes a first simulation protection server and a second simulation protection server, and the actual protection device includes a first actual protection device and a second actual protection device. The system comprises a data synchronization server, a test simulation server, a training simulation server, a simulation protection server, a database server, a workstation, one end of a simulation substation switch, and one end of an actual substation switch, all connected to a data bus. The other end of the simulation switch is connected to one end of the simulation substation, and the other end of the simulation substation is connected to both a first simulation protection server and a first actual protection device. Multiple first simulation protection devices are deployed and run on the first simulation protection server to simulate the operation of the first actual protection device. The other end of the actual substation switch is connected to one end of the actual substation, and the other end of the actual substation is connected to both a second simulation protection server and a second actual protection device. Multiple second simulation protection devices are deployed and run on the second simulation protection server to simulate the operation of the second actual protection device. The data synchronization server is connected to the actual relay protection intelligent substation system, receives the real-time model and real-time operation data of the actual relay protection intelligent substation system, receives data from the simulation substation, the actual substation, the first simulation protection device data, the second simulation protection device data, and the actual protection device data running on the simulation protection server, and stores them in the database server; the test simulation server runs test programs corresponding to the functions of the actual relay protection intelligent substation system to provide functional testing services; the training simulation server runs training simulation programs to provide relay protection simulation training services, and the workstation is used to deploy the operating system for the relay protection simulation training services.

2. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 1, characterized in that, The platform also includes a general business server, which provides a basic platform for simulating the operation of an actual relay protection smart substation system. The general business server is also used to process general business, including: resource monitoring, network communication management, data acquisition, protocol conversion, file monitoring, process management, thread management, message bus, service bus, historical database management, real-time database management, log management, and graph model management.

3. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 2, characterized in that, It also includes a display device for showcasing the application results of relay protection training simulation and test simulation.

4. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 2, characterized in that, The data synchronization server contains the actual relay protection intelligent substation system model and cross-sectional data that are consistent with the actual relay protection intelligent substation system. It parses and transmits the data packets monitored by the actual relay protection intelligent substation system to the database server, synchronizes the actual relay protection intelligent substation system model to the general business server, and creates or updates the disk files monitored by the actual relay protection intelligent substation system to the general business server.

5. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 1, characterized in that, The test simulation server also runs an upgrade package test program, which is used to test whether the upgrade package of the actual relay protection intelligent substation system is qualified.

6. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 1, characterized in that, During relay protection simulation training, trainers and trainees access the training simulation program online on workstations. Trainers set upper and lower limits on the number of substations included in the training simulation scenario, the enabled simulation application functions, and the simulation process. Trainers can also view and create detailed steps for each simulation application. Trainers can also create, set, and manage historical training materials; set the start, pause, resume, replay, and event insertion functions for training; view abnormal training events, fault handling results, training completion notifications, and individual simulation practice notifications for trainees; and provide evaluations of the trainees' training performance.

7. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 1, characterized in that, When relay protection simulation training is conducted, trainers and trainees call the training simulation program online on the workstation. Trainees load simulation scenarios on the workstation. The simulation scenarios include real-time teaching scenarios and historical teaching scenarios. The real-time teaching scenarios are used for trainees to complete the training plan specified by the trainers, and the historical teaching scenarios are used for trainees' daily skills training. The training simulations conducted by the trainees include operation and maintenance simulation, power grid fault handling simulation, and remote control operation simulation.

8. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 6 or 7, characterized in that, The workstation will alert the trainees to any operational anomalies or errors, as well as to any temporary plans, commands, and alarm pop-ups from the trainees. It will also send the trainees' analysis results and operational results to the trainers, and send the commands and events sent by the trainers to the trainees.

9. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 8, characterized in that, After the relay protection simulation training is completed, the training simulation server stores the entire training simulation operation process to the database server.

10. The online full-environment simulation platform for intelligent substation systems with relay protection according to claim 1, characterized in that, The simulation substation collects, processes, and forwards information from the first actual protection device, and simultaneously receives control commands from the general business server and forwards them to the first actual protection device. The first simulation protection server supports the first simulation protection device to simulate the operation of the first actual protection device, and the second simulation protection server supports the second simulation protection device to simulate the operation of the second actual protection device.

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