Active power distribution network operation and maintenance simulation system and method

Abstract

The invention relates to the technical field of power distribution network maintenance, in particular to an active power distribution network operation, maintenance and overhaul simulation system and method.The system comprises a simulation system, a user side and an overhaul application module, and the simulation system comprises a power grid simulation module, an acquisition module, an analysis module, a processing module, a simulation overhaul module and a communication module; the user side comprises a learning module, a simulation practice module, a task module and a management module. According to the operation and maintenance simulation system and method for the active power distribution network, the simulation scene model of the active power distribution network is set, the fault information is imported into the simulated simulation scene model, the fault of the real active power distribution network is simulated, and then the equipment of the active power distribution network is repaired in a simulation maintenance mode. By using the simulation system, an operation and maintenance model which is close to reality can be effectively provided for working personnel, the working personnel can conveniently simulate maintenance, and the working speciality of the working personnel is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution network maintenance, and particularly to an active distribution network operation and maintenance simulation system and method. Background Technique

[0002] An active distribution network refers to a distribution network with a large number of distributed power sources connected and two-way power flow, also known as an active distribution network. Compared with the traditional distribution network, the active distribution network also connects distributed power sources on the distribution side, making the power flow no longer unidirectional but bidirectional. An active distribution network is a network for energy exchange and distribution, with bidirectional power flow of its power flow and fault current. The power flow and fault analysis, voltage and reactive power control, relay protection methods, and operation management measures of the traditional distribution network are no longer applicable and all need to be adjusted and improved accordingly. It is called an active distribution network, aiming to emphasize that the distributed power sources actively adjust their reactive and active power outputs and use modern communication means to coordinate and control the distribution network to give full play to the role of the distributed power sources and achieve the optimal operation of the distribution network.

[0003] During the current operation and maintenance of the active distribution network, it is necessary for staff to judge and repair distribution network faults. For newly recruited staff, there is a lack of practical experience, resulting in low work efficiency. Moreover, the current active distribution network has a complex network, a large number of devices, and frequent changes, further increasing the difficulty of maintenance and repair for the staff. Summary of the Invention

[0004] The purpose of the present invention is to provide an active distribution network operation and maintenance simulation system and method to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the first part of the present invention provides an active distribution network operation and maintenance simulation system, including a simulation system, a user terminal, and a maintenance application module. The simulation system includes: a power grid simulation module, an acquisition module, an analysis module, a processing module, a simulation maintenance module, and a communication module. The user terminal includes: a learning module, a simulation practice module, a task module, and a management module;

[0006] The power grid simulation module is used to establish an active distribution network scenario model for simulation, and after establishing the simulation scenario, simulate faults for the equipment in the simulated power grid scenario. The acquisition module is used to import the entity data of the scenario and the data information of the corresponding power grid faults when the power grid simulation module establishes the simulation power grid scenario. The analysis module is used for fault judgment of the active distribution network simulation scenario model and generating corresponding fault repair and troubleshooting solutions. The processing module is used to confirm the accuracy of the fault judgment and fault scenario generation by the analysis module, and confirm the corresponding fault repair content and solutions. The communication module is used for data communication transmission among the simulation system, the user terminal, and the maintenance application module. The simulation maintenance module formulates a maintenance training course for the corresponding fault according to the corresponding maintenance content and solutions generated by the processing module, and conducts an assessment of the maintenance training course;

[0007] The learning module is used for users to learn knowledge about the operation and maintenance of the active distribution network of the system using the simulation system. The simulation practice module is used for users to perform simulated practical operation exercises through the simulated active distribution network scenario after completing the learning. The task module is used to generate a corresponding power grid fault maintenance simulation course task after the fault simulation of the simulation system, and match the power grid maintenance simulation practice content corresponding to the learning content for users. The management module is used for users to manage their personal information and learning information on the user terminal;

[0008] The maintenance application module is used to actually apply the maintenance solutions for the simulated faults of the active distribution network simulated by the simulation system, and complete the corresponding automated maintenance according to the causes of the power grid faults.

[0009] In a further embodiment, the simulation system further includes a data storage module, a visualization module, and a background management module;

[0010] The data storage module is used to store the data of the active distribution network scenario model established by the simulation system and the simulated faults, and store the actual scenario data and fault data imported by the acquisition unit;

[0011] The visualization module is used to display the simulation process of the simulation system for users to view through a display device;

[0012] The background management module is the overall control module, used for background data management of the user terminal and the simulation system, as well as operation management of various functions, and has the highest system management authority.

[0013] In a further embodiment, the simulation practice module is specifically provided with simulation practice equipment, which consists of a controller, a network communicator, and a virtual reality head-mounted device. A camera and a millimeter-wave radar for capturing hand movements are provided at the bottom of the virtual reality head-mounted device. The controller communicates with and controls the virtual reality head-mounted device through infrared transmission. The network communicator is built inside the virtual reality head-mounted device and is used for network communication of the simulation practice equipment.

[0014] In a further embodiment, the power grid simulation module includes: a scenario generation unit and a fault occurrence unit;

[0015] The scenario generation unit is used to identify the active distribution network data imported into the simulation system and establish a simulated power grid scenario model. The fault occurrence unit adds corresponding fault simulation scenarios to the simulated power grid scenario model established by the scenario generation unit.

[0016] In a further embodiment, the acquisition module includes: a scenario data import unit and a fault data import unit;

[0017] The scenario data import unit is used to collect the physical data of the active distribution network and import it into the simulation system. The collection of the physical data of the active distribution network is completed by a three-dimensional scanning device. The fault data import unit is used to import the existing fault information of the active distribution network into the simulation system.

[0018] In a further embodiment, the analysis module includes: a fault judgment unit and a fault solution unit;

[0019] The fault judgment unit is used to judge the simulated fault type of the active distribution network model generated in the power grid simulation module and match the corresponding fault problems. The fault solution unit is used to match the corresponding past maintenance solutions after the fault problems confirmed by the fault judgment unit;

[0020] The processing module includes: a confirmation unit and a fault repair unit;

[0021] The confirmation unit is used to confirm the fault problems and the matching corresponding maintenance solutions by the fault judgment unit and the fault solution unit, and calculate the matching degree of the fault type and the maintenance solution. The fault repair unit is used to perform simulated fault maintenance on the faults and corresponding solutions matched by the confirmation unit.

[0022] In a further embodiment, the calculation formula for the matching degree of the fault type and the maintenance solution is as follows:

[0023]

[0024] Wherein, A and B respectively represent two sets to be compared, |A∩B| represents the size of the intersection of A and B, and |A∪B| represents the size of the union of A and B.

[0025] In a further embodiment, the simulation maintenance module includes: a fault maintenance training unit and a maintenance training assessment unit;

[0026] The fault maintenance training unit is used to formulate training course content for the fault points confirmed by the processing module and the corresponding maintenance solutions, and send the training course content to the task module of the user terminal through the communication module. The maintenance training assessment unit, after the user learns the training courses formulated by the fault maintenance training unit, formulates corresponding examination content according to the maintenance training courses learned by the user, and records and confirms the user's examination results.

[0027] The second part of the present invention provides a simulation usage method for active distribution network operation and maintenance simulation applied to the active distribution network operation and maintenance simulation system, including the following steps:

[0028] 1) Perform data modeling on the physical equipment of the active distribution network by means of 3D scanning and import it into the simulation system. Use the imported active distribution network data to establish a simulation active distribution network scene model, and import the active distribution network fault data to simulate equipment faults in the active distribution network scene model;

[0029] 2) After the active distribution network scene model simulates the faults of the distribution network equipment, the analysis module of the simulation system confirms the types of the simulated faults, and then matches the corresponding past fault solutions according to the types of the faults;

[0030] 3) After the types of faults and the past fault solutions are matched, confirm the matching degree of the solutions. When the matching degree reaches the set threshold, this set of solutions can be adopted, and the final solution for fault repair and the process are generated in combination with the actually simulated fault information. If the matching degree does not reach the threshold, it is necessary to return and match the past solutions again;

[0031] 4) After the confirmation is completed, formulate the final fault maintenance plan and process, and then generate the corresponding training courses for the plan and process. The training courses include the preliminary theoretical knowledge of the corresponding faults and simulation practical operations. After the courses are completed, the corresponding courses can be examined. The examination is divided into theory and simulation practical operations, and the score for simulation operation and maintenance learning is given after the examination is completed;

[0032] 5) For the simulation of the active distribution network operation and maintenance by the simulation system, when a fault occurs in the physical equipment of the active distribution network in the established simulation model, the simulation is applied to the actual work through the above-mentioned maintenance plan formulation.

[0033] In a further embodiment, the operation steps of the client are as follows:

[0034] 1) The user logs in to the management interface of the client through the account password. In the task bar set within the client, the corresponding training courses are matched and assigned according to the user information.

[0035] 2) The user completes the training plan formulated by the simulation system according to the assigned courses, and then can perform the simulation operation of the active distribution network.

[0036] 3) During the simulation operation, the user connects an external virtual reality device and then performs simulated maintenance and repair within the constructed three-dimensional space model.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] 1. In the present invention, by setting up a simulation scenario model of the active distribution network and importing the fault information into the simulated simulation scenario model to simulate the faults of the real active distribution network, and then repairing the equipment of the active distribution network through the simulation repair method, the simulation system can effectively provide a maintenance and repair model close to the real situation for the staff, facilitating the staff to simulate the repair, and thus improving the work professionalism of the staff.

[0039] 2. In the present invention, by setting up simulated faults, the simulation system applies the simulated data to the actual operation and maintenance of the active distribution network. By continuously using the simulation repair to formulate corresponding repair plans and standards, it is convenient for the staff to quickly and accurately judge the faults and perform standardized repairs on the faults, improving the operation and maintenance of the active distribution network more efficiently and accurately.

[0040] 3. In the present invention, through the simulation scenario model of the active distribution network, the entire active distribution network can perform rapid self-check and some information-based fault troubleshooting, thereby reducing the manual workload, improving the operation stability of the active distribution network, reducing problems such as the shutdown of the distribution network caused by non-physical faults, and being able to self-check and automatically repair bugs when the system and program fail, improving the stability and operation and maintenance convenience of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the system framework of the active distribution network simulation system and the client of the present invention;

[0042] Figure 2 It is a schematic diagram of the system framework of the active distribution network simulation system of the present invention;

[0043] Figure 3 It is a schematic diagram of the flow chart of the operation method of the active distribution network simulation system of the present invention;

[0044] Figure 4 This is a schematic flow diagram of the usage method of the user side of the active distribution network simulation system of the present invention. Specific implementation manners

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] Please refer to Figure 1-2 , this embodiment provides an active distribution network operation and maintenance simulation system, including a simulation system, a user side, and a maintenance application module. The simulation system includes: a power grid simulation module, an acquisition module, an analysis module, a processing module, a simulation maintenance module, and a communication module. The user side includes: a learning module, a simulation practice module, a task module, and a management module;

[0048] The power grid simulation module is used to establish a simulated active distribution network scenario model, and after establishing the simulation scenario, simulate faults of the devices in the simulated power grid scenario. The acquisition module is used to import the entity data of the scenario when the power grid simulation module establishes the simulation power grid scenario, and import the data information corresponding to the power grid faults. The analysis module is used for fault judgment of the active distribution network simulation scenario model and generating corresponding fault maintenance and elimination solutions. The processing module is used to confirm the accuracy of the fault judgment and fault solution generation by the analysis module, and confirm the corresponding fault repair content and solution. The communication module is used for data communication transmission among the simulation system, the user side, and the maintenance application module. The simulation maintenance module formulates a maintenance training course for the corresponding fault according to the corresponding maintenance content and solution generated by the processing module, and conducts an assessment on the maintenance training course;

[0049] The learning module is used for users to learn the knowledge of the active distribution network operation and maintenance of the system by using the simulation system. The simulation practice module is used for users to perform simulated practical operation exercises through the simulated active distribution network scenario after completing the learning. The task module is used to generate a corresponding power grid fault maintenance simulation course task after the fault simulation of the simulation system, and match the power grid maintenance simulation practice content corresponding to the learning content for the users. The management module is used for users to manage their personal information and learning information on the user side;

[0050] The maintenance application module is used to actually apply the maintenance plan for the simulated faults in the active distribution network simulated by the simulation system, and complete the corresponding automated maintenance according to the causes of the power grid faults. The maintenance application module has deep learning capabilities. After the simulation system formulates the maintenance plan for the corresponding faults, it can make the process and plan functions of actual maintenance and repair according to this plan. For some faults caused by systematic bugs in the active distribution network, the self-check and self-repair functions can be realized through the deep learning ability of this maintenance application module. When systematic problems that can be self-repaired occur in the active distribution network, the maintenance application module will replace manual maintenance by modifying systematic errors to ensure that the active distribution network can be self-repaired in the first time without manual operation, ensuring that the active distribution network can be repaired in time and improving the stability of the distribution network. When some faults that require manual maintenance occur, the maintenance application module can match corresponding staff for the active distribution network for standardized maintenance and repair according to the repair plan given by the simulation system.

[0051] The simulation system also includes a data storage module, a visualization module, and a background management module;

[0052] The data storage module is used to store the data of the active distribution network scenario model and simulated faults established by the simulation system, and store the actual scenario data and fault data imported by the acquisition unit. The visualization module is used to display the simulation process of the simulation system for users to view through a display device. The background management module is the overall control module, used for the background data management of the user side and the simulation system, as well as the operation management of various functions, with the highest system management authority. It stores the modeling data and fault information required by the simulation system. After the simulation system conducts operation and maintenance simulation according to the simulation scenario model, all the generated simulation data is stored in the data storage module. These data are displayed and viewed through the visualization module, and it is convenient for subsequent manual operation of the simulation system and the display of operation and maintenance plans.

[0053] The simulation practice module is specifically equipped with simulation practice equipment, which consists of a controller, a network communicator, and a virtual reality head-mounted device. The bottom of the virtual reality head-mounted device is provided with a camera and a millimeter-wave radar for capturing hand movements. The controller communicates and controls with the virtual reality head-mounted device through infrared transmission. The network communicator is built into the virtual reality head-mounted device for the networking communication of the simulation practice equipment.

[0054] Embodiment 2

[0055] Refer to Figure 1-2 On the basis of Embodiment 1, further improvements are made:

[0056] The power grid simulation module includes: a scenario generation unit and a fault occurrence unit;

[0057] The scenario generation unit is used to identify the active distribution network data imported into the simulation system and establish a simulation power grid scenario model. The fault occurrence unit adds corresponding fault simulation scenarios to the simulation power grid scenario model established by the scenario generation unit. By using the sample data of the real environment and the past fault information data to establish the simulation scenario model, it can greatly restore the authenticity of the network composition of the active distribution network and improve the effectiveness of the simulation system.

[0058] The acquisition module includes: a scenario data import unit and a fault data import unit;

[0059] The scenario data import unit is used to collect the physical data of the active distribution network and import it into the simulation system. The collection of the physical data of the active distribution network is completed by a three-dimensional scanning device. The fault data import unit is used to import the existing fault information of the active distribution network into the simulation system. By collecting the sample data of the real environment and the past fault information data, and then establishing the simulation scenario model, it can greatly restore the authenticity, ensure the accuracy of the simulation system, and facilitate the subsequent users to use the simulation system for more efficient and accurate utilization of operation and maintenance.

[0060] The analysis module includes: a fault judgment unit and a fault solution unit;

[0061] The fault judgment unit is used to judge the simulated fault type of the active distribution network model generated in the power grid simulation module and match the corresponding fault problems. The fault solution unit is used to match the corresponding past maintenance solutions after the fault problems confirmed by the fault judgment unit. Based on the past fault information, the simulation system uses this past fault information data to match the corresponding maintenance solutions, and performs simulation maintenance operations on this solution to optimize the maintenance solutions, continuously optimize the process of active distribution network operation and maintenance, improve the operation stability of the active distribution network, and the convenience of subsequent manual operations;

[0062] The processing module includes: a confirmation unit and a fault repair unit;

[0063] The confirmation unit is used to confirm the fault problems and the corresponding maintenance solutions confirmed by the fault judgment unit and the fault solution unit, and calculate the matching degree of the fault type and the maintenance solution. The fault repair unit is used to perform simulation fault simulation maintenance on the faults and corresponding solutions matched by the confirmation unit. After the simulation system confirms the maintenance solution, it will perform simulation simulation maintenance, use the self-simulation maintenance of the simulation system to generate the corresponding maintenance process and maintenance solutions, and mark the precautions for maintenance as a reference standard. Subsequent users can learn through the process and solutions of self-simulation maintenance and perform user simulation maintenance, which can effectively improve the accuracy of user operation and maintenance, improve the accuracy of subsequent operation and maintenance of the active distribution network, and the safe use of the distribution network.

[0064] The calculation formula for the matching degree between the fault type and the maintenance plan is as follows:

[0065]

[0066] Among them, A and B respectively represent two sets to be compared, |A∩B| represents the size of the intersection of A and B, and |A∪B| represents the size of the union of A and B. Here, the sets take the key data of the fault code and the actual simulated fault, such as voltage, resistance, and whether there is a short circuit, etc., which match the fault information in the fault code, so that the simulation system can quickly retrieve the corresponding maintenance plan, and improve the subsequent provision of more efficient and accurate fault judgment information and maintenance plans for the maintenance and operation of the active distribution network.

[0067] The simulation maintenance module includes: a fault maintenance training unit and a maintenance training assessment unit;

[0068] The fault maintenance training unit is used to formulate the training course content of the corresponding maintenance plan for the fault points and corresponding maintenance plans confirmed by the processing module, and send the training course content to the task module of the user terminal through the communication module. For the maintenance training assessment unit, after the user learns the training course formulated by the fault maintenance training unit, the maintenance training assessment unit formulates the corresponding examination content according to the maintenance training course learned by the user, records and confirms the user's examination results, and can effectively formulate the improvement plan for the corresponding user according to the user's learning situation and the proficiency of the simulated operation and maintenance, thereby improving the user's professional degree of operation and maintenance of the active distribution network, ensuring that the active distribution network can operate more stably, and eliminating the need for manual actual operation, making the process of maintenance learning safer and the simulated actual operation more convenient.

[0069] Embodiment 3

[0070] Refer to Figure 2-4 On the basis of Embodiment 1, further improvements are made:

[0071] A simulation usage method for the operation and maintenance simulation of an active distribution network is applied to an active distribution network operation and maintenance simulation system, including the following steps:

[0072] 1) Data model the physical equipment of the active distribution network through 3D scanning and import it into the simulation system. Use the imported active distribution network data to establish a simulation active distribution network scene model, and import the active distribution network fault data to simulate equipment faults in the active distribution network scene model;

[0073] 2) After the active distribution network scene model simulates the faults of the distribution network equipment, the analysis module of the simulation system confirms the types of the simulated faults, and then matches the corresponding past fault solutions through the types of the faults;

[0074] 3) After the matching of the fault types and the previous solutions to the faults is completed, the matching degree is confirmed. When the matching degree reaches the set threshold, this set of solutions can be adopted, and the final solution for fault repair and the process are generated by combining the actually simulated fault information. If the matching degree does not reach the threshold, it is necessary to return and match the previous solutions again;

[0075] 4) After the confirmation is completed, the final fault repair plan and process are formulated, and then the corresponding training courses are generated from this plan and process. The training courses include the previous theoretical knowledge of the corresponding faults and simulation practical operations. After the courses are completed, the corresponding courses can be examined. The examination is divided into theory and simulation practical operations, and the score for the simulation operation and maintenance repair learning is given after the examination;

[0076] 5) For the simulation of the operation and maintenance of the active distribution network by the simulation system, when a fault occurs in the physical equipment of the active distribution network in the established simulation model, through the above-mentioned formulation of the repair plan, the simulation is applied to the actual work. When a fault occurs in the active distribution network, the simulation system transfers the fault information of the active distribution network into the system, and then the simulation system simulates the fault, and then generates the corresponding repair plan. When a fault occurs in the system and the program, it self-checks and automatically repairs the bugs, while for other faults that require manual operation and repair, the corresponding repair process plan will be generated immediately, reducing the complexity of manual repair and improving the repair efficiency and convenience of the active distribution network.

[0077] The operation steps of the user side are as follows:

[0078] 1) The user logs in to the management interface of the user side through the account password, and in the task bar set in the user side, the corresponding training courses are matched and assigned according to the user information;

[0079] 2) The user completes the training plan formulated by the simulation system according to the assigned courses, and then can perform the simulation operation of the active distribution network. The user learns through the training courses formulated by the simulation system, understands professional knowledge, improves the understanding of the active distribution network, and improves the efficiency and professionalism of subsequent operation and maintenance;

[0080] 3) During the simulation operation, the user uses an external virtual reality device, and then in the constructed three-dimensional space model, performs simulated maintenance and repair, and uses the virtual reality operation method to simulate the maintenance and repair of the active distribution network equipment, enabling the user to perform repair learning more flexibly.

[0081] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An active distribution network operation and maintenance simulation system, comprising a simulation system, a user terminal and a maintenance application module, characterized in that: The simulation system includes: a power grid simulation module, an acquisition module, an analysis module, a processing module, a simulation maintenance module and a communication module, and the user end includes: a learning module, a simulation practice module, a task module and a management module; The power grid simulation module is used to establish a simulated active distribution network scenario model, and after the simulation scenario is established, simulate the fault of the simulated power grid scenario equipment. The acquisition module is used to import the entity data of the scenario when the power grid simulation module establishes the simulated power grid scenario, and import the data information of the corresponding power grid fault. The analysis module is used for fault judgment of the active distribution network simulation scenario model, and to generate corresponding fault troubleshooting and elimination solutions. The processing module is used to confirm the accuracy of the fault judgment and fault solution generated by the analysis module, and confirm the corresponding fault maintenance content and solution. The communication module is used for data communication transmission between the simulation system, the user end and the maintenance application module. The simulation maintenance module formulates a maintenance training course for the corresponding fault according to the corresponding maintenance content and solution generated by the processing module, and assesses the maintenance training course. The learning module is used for users to learn the knowledge of active power distribution network operation and maintenance of the system by using the simulation system. The simulation practice module is used for users to perform simulated practical operation exercises by simulating active power distribution network scenarios after completing the learning. The task module is used to generate corresponding power grid fault maintenance simulation course tasks after the fault simulation of the simulation system, and match the power grid maintenance simulation practice content of the corresponding learning content for the user. The management module is used for users to manage the personal information and learning information of the user end; The maintenance application module is used to actually apply the maintenance plan of the simulated fault of the active power distribution network simulated by the simulation system, and complete the corresponding automated maintenance according to the cause of the power grid fault.

2. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The simulation system also includes a data storage module, a visualization module and a background management module; The data storage module is used to store the data of the active power distribution network scenario model established by the simulation system and the simulated fault, and to store the actual scenario data and fault data imported by the acquisition unit; The visualization module is used to display the simulation process of the simulation system for users to view through a display device; The background management module is a general control module, which is used for background data management of the user terminal and the simulation system, as well as operation management of various functions, and has the highest system management authority.

3. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The simulation practice module is specifically provided with a simulation practice device, which is composed of a controller, a network communicator and a virtual reality head-mounted device. A camera and a millimeter-wave radar for capturing hand movements are arranged at the bottom of the virtual reality head-mounted device. The controller communicates and controls the virtual reality head-mounted device through infrared transmission. The network communicator is built into the virtual reality head-mounted device and is used for the network communication of the simulation practice device.

4. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The power grid simulation module includes: a scenario generation unit and a fault generation unit; The scenario generation unit is used to identify the active power distribution network data imported into the simulation system and establish a simulated power grid scenario model. The fault occurrence unit adds a corresponding fault simulation scenario to the simulated power grid scenario model established by the scenario generation unit.

5. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The acquisition module includes: a scene data import unit and a fault data import unit; The scene data import unit is used to collect the physical data of the active distribution network and import it into the simulation system. The collection of the physical data of the active distribution network is completed using a three-dimensional scanning device. The fault data import unit is used to import the existing fault information of the active distribution network into the simulation system.

6. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The analysis module includes: a fault judgment unit and a fault solution unit; The fault judgment unit is used to judge the simulated fault type of the active distribution network model generated in the power grid simulation module and match the corresponding fault problem. The fault solution unit is used to match the corresponding previous maintenance solution after the fault problem is confirmed by the fault judgment unit. The processing module includes: a confirmation unit and a fault repair unit; The confirmation unit is used to confirm the fault problem and the corresponding maintenance plan confirmed by the fault judgment unit and the fault plan unit, and calculate the matching degree between the fault type and the maintenance plan. The fault repair unit is used to perform simulated fault simulation maintenance on the fault matched by the confirmation unit and the corresponding plan.

7. An active distribution network operation and maintenance simulation system according to claim 6, characterized in that: The calculation formula for the matching degree between the fault type and the maintenance plan is as follows: Among them, A and B represent two sets to be compared, |A∩B| represents the size of the intersection of A and B, and |A∩B| represents the size of the union of A and B.

8. The active distribution network operation and maintenance simulation system according to claim 1, characterized in that: The simulation maintenance module includes: a fault maintenance training unit and a maintenance training assessment unit; The fault maintenance training unit is used to formulate training course content corresponding to the maintenance plan based on the fault points and corresponding maintenance plans confirmed by the processing module, and send the training course content to the task module of the user end through the communication module. The maintenance training assessment unit, after the user studies the training course formulated by the fault maintenance training unit, the maintenance training assessment unit formulates corresponding examination content according to the maintenance training course studied by the user, and records and confirms the user's examination results.

9. A simulation method for active distribution network operation and maintenance simulation is applied to the active distribution network operation and maintenance simulation system as described in claims 1-8, characterized in that: The following steps are involved: 1) The physical equipment of the active distribution network is modeled by three-dimensional scanning and imported into the simulation system. The imported active distribution network data is used to establish a simulated active distribution network scenario model, and the active distribution network fault data is imported to simulate equipment failures in the active distribution network scenario model; 2) After the active distribution network scenario model simulates the distribution network equipment failure, the analysis module of the simulation system confirms the fault type of the simulated fault, and then matches the corresponding previous fault solution according to the fault type; 3) After the fault type and previous fault solutions are matched, the matching degree of the solutions is confirmed. When the matching degree reaches the set threshold, the solution can be adopted, and the final solution and process of fault repair are generated and formulated in combination with the actual simulated fault information. If the matching degree does not reach the threshold, it is necessary to return to match the previous solutions again; 4) After completion confirmation, formulate the final fault troubleshooting plan and process, and then generate the corresponding training course for the plan and process. The training course includes the previous theoretical knowledge of the corresponding fault, as well as simulation and practical operation simulation. After the course is completed, the corresponding course examination can be taken. The examination is divided into theory and simulation and practical operation. After the examination is completed, the simulation operation and maintenance learning is scored; 5) The simulation system simulates the operation and maintenance of the active distribution network. The established simulation model is used to apply the simulation to actual work through the formulation of the above-mentioned maintenance plan when the physical equipment of the active distribution network fails.

10. The method for using the simulation of active distribution network operation and maintenance simulation according to claim 9, characterized in that: The operation steps of the user end are as follows: 1) The user logs in to the management interface of the client using his / her account and password. In the task bar set in the client, the corresponding training course is assigned according to the user information; 2) Users complete the training program developed by the simulation system according to the assigned courses, and then they can perform simulation operations of the active distribution network; 3) During simulation operation, the user uses an external virtual reality device to perform simulated maintenance and inspection in the constructed three-dimensional space model.

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