Simulation training system for line loss management in transformer area

Abstract

The invention discloses a transformer area line loss management simulation practical training system, which comprises a simulation training platform, a simulation use 2.0 system, a simulation marketing field operation App and a transformer area line loss simulation practical training device, and is characterized in that the simulation training platform is responsible for simulation scene management, test question issuing simulation instruction and data simulation; the simulation 2.0 system is used for student data analysis and problem investigation learning; the simulation marketing field operation APP is used for learning employee order processing operation; the transformer area line loss simulation practical training device comprises a main control unit, simulation modules, a signal source and simulation equipment, and the main control unit is used for communicating with a main station system, receiving instructions of the main station system and forwarding the instructions to the corresponding simulation modules; the simulation module controls a signal source and simulation equipment according to the instruction to realize fault simulation; the signal source is used for supplying power to all devices in the module, and fault simulation related to power supply is achieved by controlling voltage, current and phase angle output of the signal source.

Description

Technical Field

[0001] The invention belongs to the technical field of simulation training, in particular to a simulation training system for controlling line loss in a transformer area. Background Art

[0002] In the structure of power facilities and other systems, the concept of a substation refers to the power supply range or area of ​​a transformer. Substation line loss is an important indicator in the power system, which reflects the loss in the process of power transmission and distribution in the substation. Substation line loss includes two parts: technical line loss and management line loss.

[0003] Technical line loss, also known as theoretical line loss, is the normal and reasonable power consumption generated by the power grid during the transmission and distribution of power. For the substation, technical line loss is the power loss on the internal distribution network of the substation. Technical line loss is related to factors such as the large power supply radius of the substation, low power factor of the substation, unbalanced three-phase load, and large distributed photovoltaic power generation.

[0004] Management line loss usually refers to line loss caused by poor management and mistakes. This line loss is related to factors such as metering equipment errors, different meter reading times, missed readings, wrong readings, wrong calculations, unmetered electricity use, electricity theft, and leakage caused by poor insulation of live equipment. Management line loss can be reduced by strengthening management measures.

[0005] The management of line loss in the substation area has important significance and role in modern society. It not only helps to save energy and reduce consumption, improve power supply efficiency and quality, maintain corporate benefits, promote sustainable development and ensure energy security, but also helps to promote the construction and development of an environmentally friendly society. Therefore, we should attach great importance to the importance and necessity of line loss management in the substation area, strengthen related research and application promotion, and inject new impetus and vitality into the development of the economy and society.

[0006] Common power operation training, such as meter installation and power connection, data collection and operation and maintenance, are simple on-site operations. Substation line loss management is a comprehensive matter. The difference from other operation and maintenance work is that it includes a lot of system-side analysis and troubleshooting work. The traditional substation line loss training system focuses on the troubleshooting and handling of on-site faults, lacks data analysis functions, lacks system-side data simulation functions, and lacks technical line loss simulation. There is no good solution to the difference between the number of electric energy meters in the substation line loss training system and the actual number of electric energy meters in the substation.

[0007] Current workaround

[0008] Scene simulation

[0009] The common substation line loss training system currently uses a real-load mode to simulate the entire substation topology from the substation master meter, overhead lines, underground lines to the user-side power consumption. Because it uses a real-load mode, the overall heat generation of the device is relatively large, which also leads to the fact that the substation topology can only be fixed. The simulation on the user side is relatively simple, mainly simulating single-phase power consumption scenarios and three-phase power consumption scenarios, both of which are direct-through metering methods. The device structure adopts an integrated method, which is relatively bulky and lacks scalability.

[0010] Abnormal simulation

[0011] Abnormality refers to the cause of abnormal line loss in the substation. The traditional substation line loss training system mainly focuses on the simulation of difficult and complicated problems, such as: underground wire leakage, inaccurate measurement of electricity meters, power theft, etc., resulting in weak overall simulation capabilities and incompatibility with training subjects of different skill levels.

[0012] Troubleshooting method simulation

[0013] The traditional substation line loss training system has a setting for the training scenario, that is, the problem can only be solved on site. This setting leads to insufficient coverage of training scenarios, because in actual work, many problems can be found on the system side and then confirmed on site, which can greatly improve the efficiency of problem handling and reduce costs.

[0014] Defect Analysis

[0015] With the advancement of distributed photovoltaic construction, the electricity consumption scenarios under the substations have become complicated. The common substation line loss simulation training system cannot simulate distributed photovoltaics, the scene simulation capability is insufficient, and the users under the simulated substations are limited by the number of simulation devices on the simulation device, and not all metered users can be simulated.

[0016] The construction and development of information systems have completely changed the original working mode. The responsible persons of the substations do not need to go to the site every time there is a problem. The traditional substation line loss simulation training system mainly focuses on on-site investigation and analysis, and lacks data simulation and diagnostic analysis on the system side. With the launch of the State Grid Power Information Collection System 2.0 and the promotion of the "one substation, one indicator" management method, substation line loss management has gradually entered a refined management mode. The role played by the system in the process of substation line loss management is becoming more and more important, and it is in a more important position. The original training method based on on-site investigation is no longer applicable. Summary of the invention

[0017] In view of the shortcomings and defects of the above-mentioned prior art, the present invention provides a simulation training system for substation line loss management, which completely simulates the process of power companies in managing substation line losses, simulates user power consumption data on the system side to support system side data analysis and troubleshooting, and simulates various power consumption scenarios and fault phenomena on the device side to support on-site troubleshooting; through scene simulation, data simulation, anomaly simulation, troubleshooting process simulation and other methods; it improves trainees' substation line loss management analysis capabilities from two aspects: system side troubleshooting and on-site troubleshooting.

[0018] The technical solution of the present invention is as follows: a simulation training system for line loss management in a transformer area, including a simulation training platform, a simulation mining 2.0 system, a simulation marketing on-site operation App, and a simulation training device for line loss in a transformer area.

[0019] The simulation training platform is responsible for the management of simulation scenarios, the issuance of simulation instructions for test questions, and data simulation; the simulation 2.0 system is used by trainees to perform data analysis, problem troubleshooting and learning in the simulation 2.0 system;

[0020] The simulated marketing on-site operation APP is used for trainees to learn how to process work orders on the simulated marketing on-site operation App;

[0021] The substation line loss simulation training device includes a main control unit, a simulation module, a signal source and a simulation device. The main control unit is used to communicate with the main station system, receive instructions from the main station system, and forward the instructions to the corresponding simulation module; the simulation module controls the signal source and the simulation device according to the instructions to realize fault simulation; the signal source is used to power the various devices in the module, and the power supply-related fault simulation is realized by controlling the signal source voltage, current and phase angle output.

[0022] Preferably, the simulation scenario in the simulation scenario management is a virtual substation for training generated by the equipment on the device; it includes users in the substation, substation master meter, user power meter, and concentrator archives. At the same time, in order to support the simulation of different substation topologies, the substation topology editing function is implemented in a configuration manner; after the simulation scenario is generated, it will be pushed to the simulation procurement 2.0 system.

[0023] Preferably, the test questions in the test questions distribution are a combination of simulation contents in the form of a group of simulation instructions for controlling the simulation device to exhibit different phenomena as required.

[0024] Preferably, the data in the data simulation refers to various electricity consumption data of each electric energy meter in the simulation scenario over a period of time, mainly including daily frozen data, 96-point load curve data and daily electricity consumption data calculated based on the daily frozen data, and statistical substation line loss data based on the daily electricity consumption data.

[0025] Preferably, the simulation data source is mainly the data of real users in the production system, and the equipment number, user number, user name and other information in the real system are desensitized to generate a data pool in the simulation training; the data pool must include all metering scenarios, including the total meter of the substation, single-phase user meter, three-phase direct-through user meter, three-phase mutual induction user meter, and distributed photovoltaic.

[0026] Preferably, the data simulation algorithm is as follows:

[0027] Assume that there is a total table M0 in the simulation area A, n user tables (M1, M2, ... n );

[0028] Find the corresponding point from the data pool according to the metering scenario. As long as the metering scenario matches, you can obtain the frozen data of all electric energy meters at zero o'clock on T0 and T1 for the past two days and the load curve data between T0 and T1 (closed first and open later);

[0029] With the above data, we can calculate the amount of electricity used by all user meters on day T0;

[0030] E1=k1(F1(T1)-F1(T0)) (1)

[0031] In the above formula, F1(T1) is the frozen data of user meter M1 on day T1, F1(T0) is the frozen data of user meter M1 on day T0, k is the comprehensive multiple of electric energy meter M1; E1 is the amount of electricity measured by electric energy meter M1 on day T0;

[0032] Similarly, the user's electric energy meter M2......M n The power consumption on day T0 is: E2......E n ;

[0033] Then the power supply of this area on day T0 is E out for:

[0034]

[0035] According to the calculation formula of the line loss rate in the substation area:

[0036]

[0037] Where E in is the power supply to the area, E in -E out is the line loss power, ΔP% is the target area line loss rate, that is, the simulated area line loss rate is ΔP%. When ΔP% is a certain value, according to formula (3), we can get

[0038] E in =Eout / (1-ΔP%) (4)

[0039] And E in It is the positive active power of the total meter in the area

[0040] E in =k0(F0(T1)-F0(T0)) (5)

[0041] Combining formula (4), we can get

[0042] F0(T1)=(E out / (1-ΔP%)) / k0+F0(T0) (6)

[0043] According to the line loss rate of the target substation, the data of the entire substation was simulated.

[0044] When we need to simulate a fault or abnormality of an electric energy meter in the substation, such as simulating abnormal factors on the M3 electric energy meter, we will give the electric energy meter power correction coefficient based on the abnormal factors. This coefficient is generated according to the specific abnormal factors.

[0045] E3*a = k3(F3(T1)-F3(T0)) (7)

[0046] a is the correction coefficient. According to formula (7), the frozen data of M3 on day T1 can be corrected

[0047] F3(T1)=E3*a / k3 + F3(T0); (8)

[0048] When multiple meters need to simulate abnormalities, the data can be modified in sequence according to formulas (7) and (8). After all the data of the meters are modified, the total meter power and user meter power of the substation are recalculated according to formula (1), and the supply power and substation line loss rate are recalculated according to formulas (2) and (3), and the data simulation of the entire substation is completed.

[0049] Preferably, the Yongcai 2.0 system is an important system of the power company, responsible for collecting on-site electricity meter data. The simulated Yongcai 2.0 system is used to simulate the functions in the Yongcai 2.0 system related to the line loss management of the substation. In actual work, the abnormal line loss handling of the substation is first carried out in the Yongcai 2.0 system. After the simulation scene and simulation data are pushed to the simulated Yongcai 2.0 system, students can conduct data analysis and problem troubleshooting learning in the simulated Yongcai 2.0 system.

[0050] Preferably, the marketing field operation APP is based on the integrated power marketing management system, covering system applications of business expansion, metering, customer service, metering and collection, usage inspection, marketing audit, and line loss business, to realize the mobile processing of business expansion business acceptance, metering device inspection and verification, electricity volume and electricity fee refund and other business processes; the simulated marketing field operation APP simulates the relevant functions of the abnormal line loss work order processing in the middle area of ​​the marketing field operation APP, and students can learn the work order processing operations on the simulated marketing field operation App.

[0051] Preferably, the master station system can also read the fault status of each simulation module in the device through the main control unit. A simulation module is responsible for simulating a certain type of electricity metering scenario. The internal program of the simulation device adds fault simulation-related functions and can simulate device failures and communication channel failures.

[0052] Preferably, when the most complex substation is taken as the simulation object, the simulation scenario covers all metering scenarios under the low-voltage substation, including the substation total meter, direct-through three-phase user meter, mutual inductance three-phase user meter, distributed photovoltaic, and multiple single-phase user meter boxes, and two branch box modules are added to realize the simulation of the substation topology; the substation topology refers to a power supply relationship of each metering scenario within the substation; the power data of the electric energy meters in the same substation distribution system have a logical relationship, and the power supplied by the previous level is not the sum of the power supplied by the next level; the factors causing abnormal line loss in the substation can be divided into:

[0053] Archival factors, collection factors, measurement factors, electricity theft factors, and technical factors.

[0054] The present invention completely simulates the process of power companies managing substation line losses, simulates user power consumption data on the system side to support system side data analysis and troubleshooting, and simulates various power consumption scenarios and fault phenomena on the device side to support on-site troubleshooting. It uses scenario simulation, data simulation, anomaly simulation, troubleshooting process simulation, etc. to improve students' substation line loss management and analysis capabilities from two aspects: system side troubleshooting and on-site troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is the overall architecture diagram of the present invention;

[0056] Figure 2 It is a logical structure diagram of the present invention;

[0057] Figure 3 It is a schematic diagram of the topology of the platform area in the present invention. DETAILED DESCRIPTION

[0058] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the invention, so the present invention is not limited by the specific implementation disclosed below.

[0059] A simulation training system for line loss management in substations, which uses scene simulation, data simulation, abnormality simulation, troubleshooting process simulation, etc. to improve trainees' analysis capabilities of line loss management in substations from two aspects: system-side troubleshooting and on-site troubleshooting. The implementation method is as follows:

[0060] 1. Overall architecture

[0061] like Figure 1 As shown, the entire substation line loss simulation training system mainly includes a simulation training platform, a simulation procurement 2.0 system, a simulation marketing on-site operation App, and a substation line loss simulation training device.

[0062] 1) Simulation training platform

[0063] The simulation training platform is mainly responsible for the management of simulation scenarios, the issuance of test questions (simulation instructions), and data simulation.

[0064] Simulation scene management

[0065] The simulation scene is a virtual substation for training generated by the equipment on the device. It includes files such as users in the substation, substation master meter, user electric energy meter, concentrator, etc. At the same time, in order to support the simulation of different substation topologies, the substation topology editing function is realized by configuration. After the simulation scene is generated, it will be pushed to the simulation acquisition 2.0 system.

[0066] Test questions issued

[0067] The test questions are a combination of simulation contents, in the form of a set of simulation instructions, which are used to control the simulation device to exhibit different phenomena as required.

[0068] Data simulation

[0069] Data refers to various power consumption data of each electric energy meter (area total meter, user meter) in the simulation scenario over a period of time, mainly including daily frozen data, 96-point load curve data and daily power consumption data calculated on daily frozen data. And the area line loss data is calculated based on the daily power consumption data.

[0070] In order to reflect the authenticity of the simulation data, we extracted case data from the production system of User 2.0, so that the morphological characteristics of the data are closest to real users.

[0071] After all simulation data and statistical data are generated, they will be pushed to the Simulation User 2.0 system.

[0072] The data simulation algorithm is as follows:

[0073] ①Data simulation content

[0074] In the following table, the last meter reading and the current meter reading are the contents to be simulated. The power consumption is the data calculated by simulation data.

[0075]

[0076]

[0077]

[0078]

[0079] ②Simulation data source

[0080] The source of simulation data is mainly the data of real users in the production system. The device number, user number, user name and other information in the real system are desensitized to generate a data pool in the simulation training. The data pool needs to include all metering scenarios, including the total meter of the substation, single-phase user meter, three-phase direct-through user meter, three-phase mutual induction user meter, distributed photovoltaic, etc.

[0081] ③Data simulation algorithm description

[0082] Assume that there is a total table M0 in the simulation area A, n user tables (M1, M2, ... n ).

[0083] Find the corresponding point from the data pool according to the metering scenario. As long as the metering scenario matches, you can obtain the frozen data of all electricity meters at zero o'clock in T0 and T1 for the past two days and the load curve data between T0 and T1 (closed first and open later).

[0084] With the above data, we can calculate the amount of electricity used by all user meters on day T0.

[0085] E1=k1(F1(T1)-F1(T0)) (1)

[0086] In the above formula, F1(T1) is the frozen data of user meter M1 on day T1, F1(T0) is the frozen data of user meter M1 on day T0, k is the comprehensive multiple of electric energy meter M1, and E1 is the amount of electricity measured by electric energy meter M1 on day T0.

[0087] Similarly, the user's electric energy meter M2......M n The power consumption on day T0 is: E2......E n

[0088] Then the power supply of this area on day T0 is E out for:

[0089]

[0090] According to the calculation formula of the line loss rate in the substation area:

[0091]

[0092] Where E in is the power supply to the area, E in -E out is the line loss power, ΔP% is the target area line loss rate, that is, the simulated area line loss rate is ΔP%. When ΔP% is a certain value, according to formula (3), we can get

[0093] E in =E out / (1-ΔP%) (4)

[0094] And E in It is the positive active power of the total meter in the area

[0095] E in =k0(F0(T1)-F0(T0)) (5)

[0096] Combining formula (4), we can get

[0097] F0(T1)=(E out / (1-ΔP%)) / k0+F0(T0) (6)

[0098] In this way, the data of the entire substation can be simulated based on the line loss rate of the target substation.

[0099] When we need to simulate a fault or abnormality of an electric energy meter in the substation, such as simulating abnormal factors on the M3 electric energy meter, we will give the electric energy meter power correction coefficient based on the abnormal factors. This coefficient is generated according to the specific abnormal factors.

[0100] E3*a=k3(F3(T1)-F3(T0)) (7)

[0101] a is the correction coefficient. According to formula (7), the frozen data of M3 on day T1 can be corrected

[0102] F3(T1)=E3*a / k3 + F3(T0); (8)

[0103] When multiple meters need to simulate abnormalities, the data can be modified in sequence according to formulas (7) and (8). After all the data of the meters are modified, the total meter power and user meter power of the substation are recalculated according to formula (1), and the supply power and substation line loss rate are recalculated according to formulas (2) and (3). In this way, the data simulation of the entire substation is completed.

[0104] 2) Simulation using 2.0 system

[0105] The Yongcai 2.0 system is an important system of the power company, responsible for collecting data from on-site electric energy meters. This is a very large system, and we only simulate the functions related to the management of line losses in the substation area. In actual work, the abnormal handling of substation line losses is first carried out in the Yongcai 2.0 system. After the simulation scene and simulation data are pushed to the simulated Yongcai 2.0 system, students can perform data analysis and problem troubleshooting in the simulated Yongcai 2.0 system.

[0106] 3) Simulation marketing field operation app

[0107] The marketing field operation APP is based on the integrated power marketing management system, covering the system applications of business expansion, metering, customer service, reading and verification, usage inspection, marketing inspection, line loss and other businesses, and realizing the mobile processing of business processes such as business expansion business acceptance, metering device inspection and verification, and electricity fee refund. We simulate the relevant functions of abnormal line loss work order processing in the substation area, and students can learn the work order processing operations on the simulated marketing field operation App.

[0108] 4) Substation line loss simulation training device

[0109] like Figure 2 The figure shows the logical structure of the substation line loss simulation training device, which mainly includes the main control unit, simulation module, signal source and simulation equipment. The main control unit is responsible for communicating with the main station system, receiving the instructions of the main station system, and forwarding the instructions to the corresponding simulation module. The simulation module controls the signal source and simulation equipment according to the instructions to realize fault simulation. At the same time, the main station system can also read the fault status of each simulation module in the device through the main control unit. A simulation module is responsible for simulating a certain type of electricity metering scenario. The signal source is responsible for the power supply of each device in the module. By controlling the signal source voltage, current and phase angle output, power supply related fault simulation can be realized. The internal program of the simulation device adds functions related to fault simulation, which can simulate the fault of the equipment itself, the fault of the communication channel, etc.

[0110] Because of the use of virtual load sources, each module can independently control the output power, forming a virtual substation topology on the system side. Each module runs data services virtual topology features.

[0111] Simulation scenario

[0112] like Figure 3 As shown in the figure, the most complex substation is taken as the simulation object. The simulation scenario covers all metering scenarios under the low-voltage substation, including the substation total meter, direct-through three-phase user meter, mutual inductance three-phase user meter, distributed photovoltaic, and multiple single-phase user meter boxes. In addition, two branch box modules are added to realize the simulation of the substation topology.

[0113] The substation topology refers to a power supply relationship among various metering scenarios within the substation. The power data of the energy meters in the same substation distribution system have a logical relationship, and the power supplied by the previous level is the sum of the power supplied by the next level.

[0114] Abnormal factor simulation

[0115] The factors that cause abnormal line loss in the substation area can be divided into: archive factors, collection factors, measurement factors, power theft factors, technical factors, etc. The simulation capabilities of abnormal factors are as follows:

[0116]

[0117]

[0118]

[0119] It should be noted that the embodiments mentioned above illustrate rather than limit the present invention, and those skilled in the art will be able to design alternative embodiments without departing from the scope of the claims. Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, so the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A simulation training system for line loss management in a transformer area, characterized in that: Including simulation training platform, simulation procurement 2.0 system, simulation marketing field operation app, and area line loss simulation training device. The simulation training platform is responsible for the management of simulation scenarios, the issuance of simulation instructions for test questions, and data simulation; the simulation 2.0 system is used by trainees to perform data analysis, problem troubleshooting and learning in the simulation 2.0 system; The simulated marketing on-site operation APP is used for trainees to learn how to process work orders on the simulated marketing on-site operation App; The station area line loss simulation training device includes a main control unit, a simulation module, a signal source and a simulation device. The main control unit is used to communicate with the master station system, receive the master station system instructions, and forward the instructions to the corresponding simulation module; The simulation module controls the signal source and simulation equipment according to the instructions to realize fault simulation; the signal source is used to power the various devices in the module, and the power supply-related fault simulation is realized by controlling the signal source voltage, current and phase angle output.

2. The line loss management simulation training system for substations according to claim 1 is characterized by: The simulation scenario in the simulation scenario management is a virtual substation for training generated by the equipment on the device; it includes users in the substation, substation master meter, user power meter, and concentrator archives. At the same time, in order to support the simulation of different substation topologies, the substation topology editing function is implemented in a configuration manner; after the simulation scenario is generated, it will be pushed to the simulation procurement 2.0 system.

3. The line loss management simulation training system for substations according to claim 1 is characterized by: The test questions issued are combinations of simulation contents, in the form of a group of simulation instructions, which are used to control the simulation device to show different phenomena as required.

4. The line loss management simulation training system for transformer substations according to claim 1 is characterized by: The data in the data simulation refers to various power consumption data of each electric energy meter in the simulation scenario over a period of time, mainly including daily frozen data, 96-point load curve data and daily power consumption data calculated on the daily frozen data, and statistical substation line loss data based on the daily power consumption data.

5. The line loss management simulation training system for substations according to claim 4 is characterized by: The simulation data source is mainly the data of real users in the production system. The equipment number, user number, user name and other information in the real system are desensitized to generate a data pool in the simulation training. The data pool must cover all metering scenarios, including the total meter of the substation, single-phase user meter, three-phase direct-through user meter, three-phase mutual induction user meter, and distributed photovoltaic.

6. The line loss management simulation training system for substations according to claim 4 is characterized by: The data simulation algorithm is as follows: Assume that there is a total table M0 in the simulation area A, n user tables (M1, M2, ... n ); Find the corresponding point from the data pool according to the metering scenario. As long as the metering scenario matches, you can obtain the frozen data of all electric energy meters at zero o'clock on T0 and T1 for the past two days and the load curve data between T0 and T1 (closed first and open later); With the above data, we can calculate the amount of electricity used by all user meters on day T0; E1=k1(F1(T1)-F1(T0)) (1) In the above formula, F1(T1) is the frozen data of user meter M1 on day T1, F1(T0) is the frozen data of user meter M1 on day T0, k is the comprehensive multiple of electric energy meter M1. E1 is the amount of electricity measured by electric energy meter M1 on day T0; Similarly, the user's electric energy meter M2......M n The power consumption on day T0 is: E2......E n ; Then the power supply of this area on day T0 is E out for: According to the calculation formula of the line loss rate in the substation area: Where E in is the power supply to the area, E in -E out is the line loss power, ΔP% is the target area line loss rate, that is, the simulated area line loss rate is ΔP%. When ΔP% is a certain value, according to formula (3), we can get E in =E out / (1-ΔP%) (4) And E in It is the positive active power of the total meter in the area E in =k0(F0(T1)-F0(T0)) (5) Combining formula (4), we can get F0(T1)=(E out / (1-ΔP%)) / k0+F0(T0) (6) According to the line loss rate of the target substation, the data of the entire substation was simulated. When we need to simulate a fault or abnormality of an electric energy meter in the substation, such as simulating abnormal factors on the M3 electric energy meter, we will give the electric energy meter power correction coefficient based on the abnormal factors. This coefficient is generated according to the specific abnormal factors. E3*a=k3(F3(T1)-F3(T0)) (7) a is the correction coefficient. According to formula (7), the frozen data of M3 on day T1 can be corrected F3(T1)=E3*a / k3+F3(T0); (8) When multiple meters need to simulate abnormalities, the data can be modified in sequence according to formulas (7) and (8). After all the data of the meters are modified, the total meter power and user meter power of the substation are recalculated according to formula (1), and the supply power and substation line loss rate are recalculated according to formulas (2) and (3), and the data simulation of the entire substation is completed.

7. The line loss management simulation training system for transformer substations according to claim 1 is characterized by: The Yongcai 2.0 system is an important system of the power company, responsible for collecting on-site electricity meter data. The simulated Yongcai 2.0 system is used to simulate the functions in the Yongcai 2.0 system related to the line loss management of the substation. In actual work, the abnormal line loss handling of the substation is first carried out in the Yongcai 2.0 system. After the simulation scene and simulation data are pushed to the simulated Yongcai 2.0 system, students can conduct data analysis and problem troubleshooting in the simulated Yongcai 2.0 system.

8. The line loss management simulation training system for transformer substations according to claim 1 is characterized by: The marketing field operation APP is based on the integrated power marketing management system, covering the system applications of business expansion, metering, customer service, metering and collection, usage inspection, marketing audit, and line loss business, realizing the mobile processing of business expansion business acceptance, metering device inspection and verification, electricity consumption and electricity fee refund and other business processes; the simulated marketing field operation APP simulates the relevant functions of the abnormal line loss work order processing in the station area of ​​the marketing field operation APP, and students can learn the work order processing operations on the simulated marketing field operation App.

9. The line loss management simulation training system for transformer substations according to claim 1 is characterized by: The master station system can also read the fault status of each simulation module in the device through the main control unit. A simulation module is responsible for simulating a certain type of electricity metering scenario. The internal program of the simulation device has added fault simulation-related functions, which can simulate device failures and communication channel failures.

10. The line loss management simulation training system for transformer substations according to claim 1 is characterized in that: When the most complex substation is taken as the simulation object, the simulation scenario covers all metering scenarios under the low-voltage substation, including the substation total meter, direct-through three-phase user meter, mutual inductance three-phase user meter, distributed photovoltaic, and multiple single-phase user meter boxes. In addition, two branch box modules are added to realize the simulation of the substation topology; the substation topology refers to a power supply relationship among various metering scenarios within the substation; the power data of the electric energy meters in the same substation distribution system have a logical relationship, and the power supplied by the previous level is not the sum of the power supplied by the next level; the factors causing abnormal line loss in the substation can be divided into: archival factors, collection factors, metering factors, electricity theft factors, and technical factors.

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