A distribution network master station dispatching training method and system based on main and distribution integrated topology

Abstract

A method for training a master station dispatcher of a distribution network based on a main-distribution integrated topology, characterized in that the method comprises the following steps: Step 1, simulating the physical environment of the power grid based on the main-distribution integrated topology to generate a power grid dispatching model; Step 2, obtaining the operating conditions of the power grid based on the power grid dispatching model and the flow calculation, setting a fault event at the same time, and generating a load curve based on the fault event and the power grid operating conditions when the fault occurs; Step 3, collecting the fault isolation operations of the power grid dispatcher, and updating the operating conditions of the power grid based on the fault isolation operations, and scoring the fault isolation operations of the power grid dispatcher according to the fault recovery index. The method of the present invention is clear and the simulation process is accurate. It can fully collect a variety of different faults in the power grid and accurately evaluate the dispatching operations based on the fault recovery situation, so that the dispatching training method can effectively and efficiently improve the fault operation accuracy of power grid operation and maintenance and dispatching personnel.

Description

Technical Field

[0001] The present invention relates to the field of power system automation, and more specifically, to a distribution network master station dispatching training method and system based on a main-distribution integrated topology. Background Art

[0002] Currently, in the real-world operating environment of a distribution automation master station system, remote control and remote adjustment operations are limited by actual operating conditions, making them impossible to freely operate or simulate. Existing technologies do not provide simulations or simulated operational drills for handling distribution network faults in a real-world power grid environment.

[0003] This results in inexperienced grid dispatchers lacking experience in handling distribution network faults, making them hesitant to take timely action when encountering a distribution network fault. Furthermore, inexperienced distribution automation operators are generally unfamiliar with system operation and require training on various functionalities, such as establishing channel and distribution terminal parameters. However, existing technologies do not provide this type of training.

[0004] Furthermore, distribution automation operators are typically limited to simulating various O&M operations within the grid's real-time operational database. This results in a significant amount of junk data in the system, impacting both the accuracy and speed of the system's actual operation and the statistical analysis of operational indicators. Furthermore, simulating O&M operations using the grid's real-time operational data system also makes it difficult to perform functional testing of newly added modules designed for O&M training in an off-grid environment suitable for testing. Furthermore, directly deploying these modules online could also impact the stable operation of the online system.

[0005] To address the above issues, an independent system is urgently needed to achieve accurate simulation of power grid operating conditions and fault simulation, as well as training for various personnel such as power grid dispatching, operation and maintenance. Summary of the Invention

[0006] In order to address the deficiencies in the prior art, the present invention provides a distribution network master station dispatching training method and system based on a main-distribution integrated topology. By generating a power grid dispatching model, the power grid operating conditions when a fault event occurs are simulated, and the fault recovery and scoring are achieved by collecting various fault isolation operations of the power grid dispatcher.

[0007] The present invention adopts the following technical solutions.

[0008] The first aspect of the present invention relates to a distribution network master station dispatching training method based on a main-distribution integrated topology, the method comprising the following steps: step 1, simulating the physical environment of the power grid based on the main-distribution integrated topology to generate a power grid dispatching model; step 2, obtaining the operating conditions of the power grid based on the power grid dispatching model and flow calculation, setting fault events at the same time, and generating a load curve based on the fault events and the power grid operating conditions when the fault occurs; step 3, collecting the fault isolation operations of the power grid dispatcher, updating the operating conditions of the power grid according to the fault isolation operations, and scoring the fault isolation operations of the power grid dispatcher according to the fault recovery index.

[0009] Preferably, the process of simulating the physical environment of the power grid includes constructing the network topology relationship, steady-state operation status, relay protection logic, and automatic operation logic of the primary and secondary devices in the power grid.

[0010] Preferably, the operating condition of the power grid is the operating condition of the primary equipment and the secondary equipment when the power grid is in steady-state operation.

[0011] Preferably, the fault events include load power failure, indicator over-limit failure and signal misreporting failure; wherein, load power failure includes Class I load failure, Class II load failure and Class III load failure; indicator over-limit failure includes line current over-limit, main transformer current over-limit, bus voltage over-limit and calculation point value over-limit; signal misreporting failure includes switch false alarm signal failure, switch missed signal failure, switch refusal to operate failure, reclosing failure and local feeder automation failure.

[0012] Preferably, based on the training needs of the distribution network master station scheduling, fault events are set; wherein, the method of setting fault events is graphic element device setting and model tree fault setting; in the process of setting fault events, the fault device, fault phase, fault type and fault execution mode are set respectively.

[0013] Preferably, the fault recovery indicators of load power failure are load loss amount, load loss level and load loss time; the fault recovery indicators of indicator over-limit failure are over-limit amount, over-limit level and over-limit time; the fault recovery indicator of signal error fault is communication shielding time.

[0014] Preferably, the current fault is executed based on the fault execution mode, and the power grid operation condition simulation under the fault event is started, so as to obtain the load curve under the fault event.

[0015] Preferably, the power grid operating condition simulation is used to simulate the operating condition of the current power grid section; or, the power grid operating condition simulation is used to synchronously simulate the operating conditions of multiple power grid sections.

[0016] Preferably, the fault isolation operations of the power grid dispatcher are scored based on a preset dispatch procedure library.

[0017] The second aspect of the present invention relates to a distribution network master station dispatching training system based on a main-distribution integrated topology. The system is implemented by adopting the steps of the distribution network master station dispatching training method based on the main-distribution integrated topology in the first aspect of the present invention; and the system includes a model building unit, a fault simulation unit and an operation scoring unit; wherein the model building unit is used to simulate the physical environment of the power grid based on the main-distribution integrated topology to generate a power grid dispatching model; the fault simulation unit is used to obtain the operating conditions of the power grid based on the power grid dispatching model and flow calculation, and at the same time set fault events, and generate a load curve based on the fault events and the power grid operating conditions when the fault occurs; the operation scoring unit is used to adopt the fault isolation operation of the power grid dispatcher, and update the operating conditions of the power grid based on the fault isolation operation, and score the fault isolation operation of the power grid dispatcher according to the fault recovery index.

[0018] The beneficial effect of the present invention is that, compared with the prior art, the present invention provides a method and system for training a master station dispatcher based on a master-distribution integrated topology for distribution networks. This method and system can simulate the grid operating conditions during a fault event by generating a grid dispatch model, and can also achieve fault recovery and scoring by collecting various fault isolation operations performed by grid dispatchers. The method is clear and the simulation process is accurate. It can fully capture a variety of different faults in the grid and accurately evaluate dispatch operations based on fault recovery conditions, enabling the dispatch training method to effectively and efficiently improve the accuracy of fault operations performed by grid operation and maintenance personnel and dispatchers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flow chart of a method for training a master station in a distribution network based on a master-distribution integrated topology according to the present invention;

[0020] Figure 2 The present invention is a schematic diagram of the module structure of a distribution network master station scheduling training system based on the main and distribution integrated topology. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in the present invention are only part of the embodiments of the present invention, not all of the embodiments. Based on the spirit of the present invention, all other embodiments not described in the present invention that are obtained by ordinary technicians in this field based on the embodiments described in the present invention without making creative work should fall within the scope of protection of the present invention.

[0022] Figure 1 This is a flow chart of a method for training a master station in a distribution network based on a master-distribution integrated topology. Figure 1As shown, the present invention relates to a distribution network master station scheduling training method based on a master-distribution integrated topology, and the method includes steps 1 to 3.

[0023] Step 1: Simulate the physical environment of the power grid based on the main and distribution integrated topology to generate a power grid dispatch model.

[0024] Since the present invention hopes to collect real data generated in real time in the power grid, and at the same time be able to match the actual power grid topology to train relevant operators of the power system, the present invention also needs to simulate various faults by collecting real power grid operation data, which is different from the actual operating conditions of the power grid. Therefore, it can be understood that the method of the present invention can use independent physical equipment and realize data retrieval, analysis and processing by designing appropriate network interfaces, thereby realizing scheduling training for distribution network master stations.

[0025] It should be noted that this invention builds upon the standard architecture of a distribution network master station by adding simulation training-related hardware components, such as servers, workstations, switches, firewalls, KVM management and control systems, and other physical devices required for the master station architecture. Furthermore, software components are also required, including databases, operating systems, multipathing and HA software, simulation training modules, and other upgradeable software modules.

[0026] On this basis, the present invention can simulate and emulate the distribution master station, distribution network, communication equipment, and various terminals. To achieve the above functions, the method of the present invention can extract relevant important information from the existing network device topology data table in the prior art, and then use this data to build a corresponding power grid scheduling model through the software and hardware devices involved in the present invention.

[0027] Preferably, the process of simulating the physical environment of the power grid includes constructing the network topology relationship, steady-state operation status, relay protection logic, and automatic operation logic of the primary and secondary devices in the power grid.

[0028] Specifically, in the process of building the model, all the important equipment involved in the power grid can be recorded in sequence, and a data table can be generated at the same time, or displayed in a visual way. Specifically, multiple devices can be displayed in the form of a model tree. For example, the model tree interface lists all substations, feeders and distribution stations with distribution network equipment in the system in the form of a tree. For each container, all the equipment under the container can be listed in the form of a table, including its equipment type, equipment name, affiliated plant station, affiliated feeder and affiliated distribution station. Alternatively, the method also supports connection settings and parameter configuration for multiple distribution network equipment elements in the graphical operation interface, thereby realizing the construction of the model.

[0029] Step 2: Obtain the operating conditions of the power grid based on the power grid dispatch model and power flow calculation, set a fault event, and generate a load curve based on the fault event and the power grid operating conditions when the fault occurs.

[0030] It is understood that during the distribution network simulation process, the method of the present invention supports changes in distribution network flows under various circumstances, supports integrated medium and low voltage simulation, supports operation simulation of distributed power sources, as well as fault simulation and flow simulation, and can perform flow calculations for distributed power sources both on-grid and off-grid. Furthermore, the method of the present invention can flexibly establish various distributed power supply models and control models, simulating various control strategies.

[0031] In addition, the simulation process can also support the change of switch position and power flow under load regulation. According to the corresponding analog and digital quantity change messages, the communication simulation system is notified to communicate with the simulated distribution automation master station.

[0032] Among them, the simulation processing of the numerical power flow of the power grid can simulate and upload the voltage, current and power data, and consider the power flow data simulation of the asymmetric operation of single-phase grounding in the small current grounding system.

[0033] Preferably, the operating condition of the power grid is the operating condition of the primary equipment and the secondary equipment when the power grid is in steady-state operation.

[0034] Preferably, the fault events include load power failure, indicator over-limit failure and signal misreporting failure; wherein, load power failure includes Class I load failure, Class II load failure and Class III load failure; indicator over-limit failure includes line current over-limit, main transformer current over-limit, bus voltage over-limit and calculation point value over-limit; signal misreporting failure includes switch false alarm signal failure, switch missed signal failure, switch refusal to operate failure, reclosing failure and local feeder automation failure.

[0035] Class I loads include those that, during a power outage, could pose a risk of personal injury or death, cause significant equipment damage that is difficult to repair, or result in significant political and economic losses. Class II loads, on the other hand, could cause serious production and work stoppages, traffic congestion in certain areas, and disrupt the normal lives of most urban residents. For example, factories, large towns, and rural irrigation and drainage stations fall under Class II loads, and uninterrupted power supply must be ensured for these loads whenever possible. General loads other than Class I and Class II loads, for which short-term power outages do not cause significant losses, are referred to as Class III loads. These include factory ancillary workshops, electricity used in small towns, and rural residents, and for which short-term power outages are permitted.

[0036] Specifically, if a distributed generator is connected to the distribution network, it can be used as a negative PQ node. Therefore, power flow calculations still use the radial network forward and backward method. When calculating island power flow, a multi-machine balancing method is used to determine whether the generator is a balanced machine based on its properties. First, the total load of the island and the generator output of the unbalanced machine are calculated to calculate the unbalanced power. Then, based on the rated capacity of the balanced machine, the unbalanced power is distributed, and the generator with the largest capacity is selected as the root node. The other generators are used as negative PQ nodes for forward and backward calculations. If there is no balanced machine or the root node power exceeds the limit, the island is considered to be completely black and without power. When simulating grid faults including distributed generation, the handling of switch overcurrent protection and anti-islanding protection is temporarily considered.

[0037] In addition, the present invention also supports the simulation of various types of lines. Specifically, the method can simulate various protection signals and switch action signals under various conditions when the power grid is running, and update the power grid operating status by sending corresponding analog and digital change messages.

[0038] In addition, the present invention can also simulate operating conditions such as substation busbar grounding and complete substation shutdown. For example, based on the network topology and simulated switch sections, it can simulate the generation and restoration of substation grounding signals, allowing dispatchers to practice switching and line selection. Alternatively, it can simulate a complete substation shutdown, including main transformer and busbar outages, to facilitate dispatchers' accident handling.

[0039] According to the corresponding control information, the method of the present invention can trigger the calculation of the power grid flow, and according to the corresponding analog and digital quantity change messages, simulate the distribution automation master station to carry out data communication, and realize the simulation of the power grid working conditions at the same time, so as to conduct drills for various fault conditions.

[0040] Furthermore, the present invention can also transmit data collected from the terminal measurement and control unit to the system of the present invention according to communication protocols specified in pre-set specifications, such as rules 101 and 104, thereby obtaining relevant data from the terminal measurement and control unit. The present invention can simulate the normal and faulty operating conditions of various equipment, such as FTUs, DTUs, TTUs, and fault indicators. For example, it can simulate TTU power outages and the transmission of fault recordings, simulate basic telemetry and telesignaling data and channel activation and deactivation, and simulate the transmission of overcurrent signals.

[0041] Preferably, based on the training needs of the distribution network master station scheduling, fault events are set; wherein, the method of setting fault events is graphic element device setting and model tree fault setting; in the process of setting fault events, the fault device, fault phase, fault type and fault execution mode are set respectively.

[0042] Specifically, the present invention can manually set the specific fault that occurs. Similarly, the present invention can also directly implement the setting of the graphic element device in the graphical operation interface, or implement it by selecting the device in the model tree. The fault phases include ABC three phases, and the fault types can include the various types of faults described in the foregoing text. Of course, they can also include the following specific faults among the various types of faults in the foregoing text. For example, for the switch false alarm signal fault, a three-phase grounding fault or a three-phase short circuit fault can be set for selection. In addition, the execution method of the fault can specifically include immediately executing the current fault, thereby realizing the simulation of the power grid working condition when the fault occurs, or adding the fault to the fault execution waiting list, so as to continue to execute the fault after completing other fault tasks.

[0043] Step 3: Collect the fault isolation operations of the grid dispatcher, update the operating conditions of the grid based on the fault isolation operations, and score the fault isolation operations of the grid dispatcher according to the fault recovery index.

[0044] In the present invention, the power grid operating conditions can be simulated according to the execution conditions of various faults. The simulation here can be performed not only based on multiple time sections, but also based on multiple different node sections.

[0045] Preferably, the fault recovery indicators of load power failure are load loss amount, load loss level and load loss time; the fault recovery indicators of indicator over-limit failure are over-limit amount, over-limit level and over-limit time; the fault recovery indicator of signal error fault is communication shielding time.

[0046] In the present invention, different fault contents should also include different fault recovery indicators. The operating conditions of the operator can be specifically scored based on the values of these fault recovery indicators.

[0047] Preferably, the current fault is executed based on the fault execution mode, and the power grid operation condition simulation under the fault event is started, so as to obtain the load curve under the fault event.

[0048] In the present invention, the most important data obtained after the operating condition simulation includes the load curve. This load curve can be used to determine which locations and equipment may be at risk. The load curve can be used by dispatchers as a reference to implement corresponding dispatch operations. Furthermore, the load curve, which has already been used for dispatch operations, can also be used to assess the accuracy of the dispatcher's operations.

[0049] Preferably, the power grid operating condition simulation is used to simulate the operating condition of the current power grid section; or, the power grid operating condition simulation is used to synchronously simulate the operating conditions of multiple power grid sections.

[0050] As mentioned above, the grid operation conditions in the present invention can be simulated for one or more sections simultaneously. In this way, the overall situation of the grid can be judged, thereby making a comprehensive and reasonable analysis of the fault and making an overall evaluation of the results after the dispatching operation.

[0051] Preferably, the fault isolation operations of the power grid dispatcher are scored based on a preset dispatch procedure library.

[0052] It is understandable that the various fault recovery indicators, operating conditions of each section, and load curves mentioned above can all be used as content in the dispatching procedure library to implement the design of scoring rules. In addition, the dispatching procedure library can also include additional abnormal events. When these problems occur in the power grid, the method of the present invention will further deduct points based on the above rules. For example, if the troubleshooting operation involves the situation where the faulty busbar and main transformer are powered on without inspection, the situation of row search is not considered when the line is single-phase grounded, the problem of paralleling and disconnecting small power plants is not considered when the line is shut down and restored, the electromagnetic ring network operation time exceeds 5 minutes when handling accidents, the order of pulling the line is not considered when the line is pulled instantaneously, the external power supply is not used to test power on the power outage busbar when conditions permit, the switch and protection status are not checked before closing and paralleling, the closing and disconnecting points are selected and operated unreasonably, the switch locking and opening and closing are not changed to non-automatic, and the bypass The abnormal switch was not changed to non-automatic when it replaced the abnormal switch, the bus tie switch was not changed to non-automatic when the bus was reversed, the line patrol instruction was not issued after the line tripped, the work should have been started after the abnormality and accident was handled but was not started, the abnormality was handled at the wrong interval, the power outage was taken to isolate the fault when it was not necessary, the interval was missed during the bus reversal, the knife switch operation sequence was incorrect, the neutral point knife of the main transformer was not operated, the bus was shut down without pulling out the bus transformer, the main transformer mode was unreasonable, the faulty bus brought the main transformer back to power, the operation sequence of the capacitor was abnormal when the bus was shut down and resumed, the normal mode was not restored after the abnormality and accident was handled, etc.

[0053] In addition, if there are problems such as closing the switch under load, closing the grounding switch under power, closing the faulty equipment, or not isolating the fault point after processing, it is judged that a serious problem has occurred in the dispatching operation, and even no score will be given, but a prompt will be issued through alarms and other means.

[0054] Figure 2 This is a schematic diagram of the module structure of a distribution network master station scheduling training system based on the main and distribution integrated topology of the present invention. Figure 2As shown, the second aspect of the present invention relates to a distribution network master station dispatching training system based on a main-distribution integrated topology, and the system is implemented by adopting the steps of the distribution network master station dispatching training method based on the main-distribution integrated topology in the first aspect of the present invention; and the system includes a model building unit, a fault simulation unit and an operation scoring unit; wherein, the model building unit is used to simulate the physical environment of the power grid based on the main-distribution integrated topology to generate a power grid dispatching model; the fault simulation unit is used to obtain the operating conditions of the power grid based on the power grid dispatching model and flow calculation, and at the same time set fault events, and generate a load curve based on the fault events and the power grid operating conditions when the fault occurs; the operation scoring unit is used to adopt the fault isolation operation of the power grid dispatcher, and update the operating conditions of the power grid according to the fault isolation operation, and score the fault isolation operation of the power grid dispatcher according to the fault recovery index.

[0055] It is understandable that the distribution network master station scheduling training system includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the various functions in the method provided in the above-mentioned embodiment of the present application. It should be easily appreciated by those skilled in the art that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0056] The embodiment of the present application can divide the distribution network master station scheduling training system into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0057] The system of the present invention can be implemented by connecting one or more devices to a network, and the devices include at least one processor, a bus system, and at least one communication interface. The processor can be a central processing unit (CPU), or can be replaced by a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or other hardware. Alternatively, the FPGA or other hardware can be used together with the CPU as the processor.

[0058] The memory may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these. The memory may exist independently and be connected to the processor via a bus. The memory may also be integrated with the processor.

[0059] The hard disk can be a mechanical disk or a solid-state drive (SSD). The interface card can be a host bus adapter (HBA), a redundant array of independent disks (RID), an expander card, or a network interface controller (NIC), etc., which is not limited in the embodiments of the present invention. The interface card in the hard disk module communicates with the hard disk. The storage node communicates with the interface card of the hard disk module to access the hard disk in the hard disk module.

[0060] The interface of the hard disk can be Serial Attached Small Computer System Interface (SAS), Serial Advanced Technology Attachment (SATA), or Peripheral Component Interconnect express (PCIe).

[0061] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more media integrated therein. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)).

[0062] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages such as Smalltalk, C++, and conventional procedural programming languages such as "C" language or similar programming languages. Computer-readable program instructions may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., utilizing an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of the computer-readable program instructions. The electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0063] The beneficial effect of the present invention is that, compared with the prior art, the present invention provides a method and system for training a master station dispatcher based on a master-distribution integrated topology for distribution networks. This method and system can simulate the grid operating conditions during a fault event by generating a grid dispatch model, and can also achieve fault recovery and scoring by collecting various fault isolation operations performed by grid dispatchers. The method is clear and the simulation process is accurate. It can fully capture a variety of different faults in the grid and accurately evaluate dispatch operations based on fault recovery conditions, enabling the dispatch training method to effectively and efficiently improve the accuracy of fault operations performed by grid operation and maintenance personnel and dispatchers.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for training a master station in a distribution network based on a master-distribution integrated topology, characterized in that: The method comprises the following steps: Step 1: simulating the physical environment of the power grid based on the main and distribution integrated topology to generate a power grid dispatch model; Step 2: obtaining the operating condition of the power grid based on the power grid dispatch model and power flow calculation, setting a fault event, and generating a load curve based on the fault event and the power grid operating condition when the fault occurs; Simulate the numerical power flow of the power grid, simulate and upload voltage, current and power data, and consider the power flow data simulation of the asymmetric operation of single-phase grounding in a small current grounding system; If the distributed generation is connected to the distribution network, it will be used as a reverse PQ node, and the power flow calculation adopts the forward-backward substitution method of the radiation network and the multi-machine balance calculation method to perform island power flow calculation; Determine whether the generator is a balancing machine based on its properties, including: Calculate the total load of the island and the generator output of the unbalanced machine, calculate the unbalanced power, and then distribute the unbalanced power based on the rated capacity of the balanced machine. Select the generator with the largest capacity as the root node and the other generators as negative PQ nodes for forward and backward calculations. If there is no balancing machine or the root node power exceeds the limit, the island is considered to have no power; When simulating a grid fault with distributed power sources, it includes two cases: switch overcurrent protection and anti-islanding protection; Step 3: Collect the fault isolation operations of the power grid dispatcher, update the operating conditions of the power grid based on the fault isolation operations, and score the fault isolation operations of the power grid dispatcher according to the fault recovery index.

2. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 1, characterized in that: The process of simulating the physical environment of the power grid includes constructing the network topology relationship, steady-state operation status, relay protection logic and automatic operation logic of the primary and secondary devices in the power grid.

3. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 2, characterized in that: The operating conditions of the power grid are the operating conditions of the primary equipment and the secondary equipment when the power grid is in steady-state operation.

4. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 3, characterized in that: The fault events include load power failure, indicator over-limit failure and signal error fault; The load power failure includes a type I load failure, a type II load failure and a type III load failure; The indicator over-limit faults include line power flow over-limit, main transformer power flow over-limit, bus voltage over-limit and calculation point value over-limit; The signal misreporting fault includes switch misreporting signal fault, switch missed reporting signal fault, switch refusal fault, reclosing fault, and local feeder automation fault.

5. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 4, characterized in that: Setting the fault event based on the training requirements of the distribution network master station dispatcher; Wherein, the method for setting the fault event is graphic element device setting and model tree fault setting; During the setting process of the fault event, the fault device, fault phase, fault type and fault execution mode are set respectively.

6. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 5, characterized in that: The fault recovery indicators of the load power failure are load loss amount, load loss level and load loss time; The fault recovery indicators of the indicator over-limit fault are over-limit amount, over-limit level and over-limit time; The fault recovery indicator of the signal misreporting fault is the communication shielding time.

7. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 6, characterized in that: The current fault is executed based on the fault execution mode, and a power grid operation condition simulation under the fault event is started, thereby obtaining a load curve under the fault event.

8. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 7, characterized in that: The power grid operation condition simulation is used to simulate the operation condition of the current power grid section; or, The power grid operating condition simulation is used to synchronously simulate the operating conditions of multiple power grid sections.

9. A method for training a master station in a distribution network based on a master-distribution integrated topology according to claim 8, characterized in that: The fault isolation operation of the power grid dispatcher is scored based on a preset dispatch procedure library.

10. A distribution network master station dispatching training system based on a master-distribution integrated topology, characterized by: The system is implemented by using the steps of the distribution network master station scheduling training method based on the master-distribution integrated topology described in any one of claims 1 to 9; and The system includes a model building unit, a fault simulation unit and an operation scoring unit; wherein, The model building unit is used to simulate the physical environment of the power grid based on the main and distribution integrated topology to generate a power grid dispatch model; The fault simulation unit is used to obtain the operating conditions of the power grid based on the power grid dispatch model and power flow calculation, set a fault event, and generate a load curve based on the fault event and the power grid operating conditions when the fault occurs; The fault simulation unit is used to simulate the numerical power flow of the power grid, simulate and upload the voltage, current and power data, and consider the power flow data simulation of the asymmetric operation of the single-phase grounding of the small current grounding system; If the distributed generation is connected to the distribution network, it will be used as a reverse PQ node, and the power flow calculation adopts the forward-backward substitution method of the radiation network and the multi-machine balance calculation method to perform island power flow calculation; Determine whether the generator is a balancing machine based on its properties, including: Calculate the total load of the island and the generator output of the unbalanced machine, calculate the unbalanced power, and then distribute the unbalanced power based on the rated capacity of the balanced machine. Select the generator with the largest capacity as the root node and the other generators as negative PQ nodes for forward and backward calculations. If there is no balancing machine or the root node power exceeds the limit, the island is considered to have no power; When simulating a grid fault with distributed power sources, it includes two cases: switch overcurrent protection and anti-islanding protection; The operation scoring unit is used to adopt the fault isolation operation of the power grid dispatcher, update the operating conditions of the power grid based on the fault isolation operation, and score the fault isolation operation of the power grid dispatcher according to the fault recovery index.

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