PT simulation method of electric energy meter wiring simulation system

Abstract

The invention discloses a PT simulation method of an electric energy meter wiring simulation system, and the method comprises the steps: enabling a device to recognize the model and installation state of an electric energy meter through an installation state recognition module, controlling a primary and secondary side voltage conversion output module to output the voltage value of each phase of the primary side according to a PT primary side fault set by a user through a main control module, and enabling the primary and secondary side voltage conversion output module to output the voltage value of each phase of the primary side; according to the installation state of the installed electric energy meter and PT primary and secondary side faults set by a user, each phase voltage value of the secondary side is obtained, the primary and secondary side voltage conversion output module is controlled to output, and each simulation surface of the wiring system can independently control the PT faults in the wiring through the primary and secondary side conversion output module, so that the safety of the wiring system is improved. According to the method, the wiring simulation effect can be well achieved, meanwhile, compared with other substitution methods, the size is reduced, cost is saved, in addition, a final output voltage value is obtained by setting a secondary voltage algorithm library in combination with theoretical pt voltage output and actual influence factors, and more real pt simulation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission simulation, and in particular to a PT simulation method of an electric energy meter wiring simulation system. Background Art

[0002] The wrong wiring simulation system of electric energy meter can generally simulate various incorrect wiring methods that may occur on site for mechanical, electronic, intelligent and other three-phase three-wire, three-phase four-wire active and reactive electric energy meters, mainly including the simulation of voltage wiring at the end of meter, PT primary phase failure, PT wiring method, CT wiring method, reverse connection of current in and out at the end of meter and wrong connection of current. This wiring simulation system is often used for training, competition and assessment of meter installation, power connection and power consumption inspection in power metering departments.

[0003] There are different types of electricity meter wiring simulation systems on the market. Considering the occupied space and investment cost, power companies require one device to meet the needs of multiple people for simulation training at the same time. Therefore, 3 or even 4 of the 4 sides of the device will be set as simulation training stations. Because there are only 3 PTs in the system, corresponding to the three phases A, B, and C respectively, each simulation side of the device shares these 3 PTs. The current design method of this PT is mainly due to the large size of the PT and the relatively high cost. If each panel is set with 3 PTs separately and the internal fan heat problem is considered, the size of the entire simulation system will be relatively large, and a separate secondary control circuit needs to be designed for each PT, which further increases the size and cost.

[0004] However, when multiple panels are conducting simulation training at the same time, it is impossible to set independent PT primary anomalies for different simulation surfaces, that is, a PT primary fault is set for the first surface, and a PT primary fault is not set for the second surface. However, the PT primary fault can be detected during the training on the second surface, which causes certain interference to the simulation training process of the operators. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a PT simulation method for an electric energy meter wiring simulation system, aiming to solve the technical problem of mutual interference among multiple stations of the existing PT simulation equipment.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: On the one hand, an embodiment of the present application provides a PT simulation method of an electric energy meter wiring simulation system, comprising the following steps: Step 1: The user installs the electric energy meter on the electric energy meter installation position of the device, and sets the abnormal fault status of the primary and secondary sides of the PT on the main control module. The device identifies the model and installation status of the electric energy meter through the installation status identification module; Step 2: According to the PT primary side fault set by the user, the main control module controls the primary and secondary side voltage conversion output module based on the general wiring system to output the voltage value of each phase on the primary side; Step 3: According to the installation status of the installed energy meter and the faults of the primary and secondary sides of the PT set by the user, the secondary voltage algorithm library calculates to obtain the voltage value of each phase on the secondary side and controls the output of the primary and secondary voltage conversion output module.

[0007] It is further explained that the primary-secondary voltage conversion output module and the installation status identification module are replacements for the PT, the primary and secondary wiring of the PT, and the secondary control circuit of the PT based on a general wiring system.

[0008] It is further explained that the secondary voltage algorithm library is trained with known abnormal data of electric energy meters, and the abnormal data of electric energy meters include the type of electric energy meter wiring, the type of electric energy meter wiring, the electric energy meter wiring method, the abnormal state, the voltage and phase output by the PT. The basic algorithm library is generated through training, and the basic algorithm library can generate universal data, and the universal data is an ideal value. Then, the secondary voltage algorithm library can generate authenticity data by injecting factors such as PT error coefficient, temperature and secondary load, and the authenticity data is dynamic.

[0009] Further explanation: when calling the secondary voltage algorithm library, the PT data in the current situation is calculated through correlation, and the error coefficient, temperature and secondary load are simulated at the same time, and the authenticity data is obtained by dynamic calculation. The specific process includes: According to the wiring type selected by the user, the primary side voltage is determined and randomized within a small range; The secondary voltage algorithm library calculates the secondary voltage based on the randomly obtained primary voltage; The error coefficient a is randomly obtained from the common PT prefabricated coefficients, and the secondary voltage value is regenerated according to the error coefficient a; The load data of the currently installed electric energy meter is used as the secondary load value, the coefficient data c is prefabricated, and the secondary voltage value is regenerated according to the secondary load coefficient data; The temperature b is randomly obtained according to the running time and temperature change law. The temperature b is used as the entropy value for distribution calculation to obtain the temperature influence coefficient b1; Regenerate the secondary voltage value according to the temperature influence coefficient; The value of temperature b is changed as the running time changes, and the secondary voltage value is recalculated.

[0010] According to another embodiment of the present invention, a PT simulation device of an electric energy meter wiring simulation system is proposed, comprising: a main control module, an installation status identification module, and a primary and secondary side voltage conversion output module, specifically: The main control module is provided with a secondary voltage algorithm library, and the main control module can receive the installation status identified by the installation status identification module, and obtain the voltage value to be output through the secondary voltage algorithm library in combination with the fault of the primary and secondary sides of the PT set by the user, and then control the primary and secondary side voltage conversion output module to output each voltage value; The installation status identification module is arranged at the electric energy meter installation station of each simulation surface, and can identify the model and installation status of the electric energy meter installed at the station; The primary-secondary voltage conversion output module connects the power source with the simulation panel. Different from the general wiring system, it removes the PT, the primary and secondary wiring of the PT and the control circuit of the PT secondary, and adopts the primary side voltage conversion output circuit and the secondary side voltage conversion output circuit to convert the three-phase voltage value output by the power source and output the voltage value of each phase.

[0011] An electronic device comprises: a processor and a memory, wherein a computer program is stored in the memory, and the computer program is loaded and executed by the processor to implement the PT simulation method of the above-mentioned electric energy meter wiring simulation system.

[0012] A computer-readable storage medium stores a computer program, which is loaded and executed by a processor to implement the PT simulation method of the above-mentioned electric energy meter wiring simulation system.

[0013] In summary, the beneficial effects of the present invention compared with the prior art are as follows: the present invention replaces the traditional pt circuit method by designing a primary-secondary side conversion output module, so that each simulation surface of the wiring system can independently control the PT fault in the wiring, and can achieve a good wiring simulation effect. At the same time, compared with other alternative methods, the volume is reduced and the cost is saved. In addition, by setting a secondary voltage algorithm library to combine the theoretical pt voltage output with the actual influencing factors, the final output voltage value is obtained to achieve a more realistic pt simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, in which: Figure 1 It is a flow chart of a PT simulation method of an electric energy meter wiring simulation system; Figure 2 Generate a realistic data flow diagram for the secondary voltage algorithm library; Figure 3 This is a PT simulation structure diagram of an electric energy meter wiring simulation system. DETAILED DESCRIPTION

[0015] The principles and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. The "embodiment" or "implementation method" in the specification may represent one embodiment or one implementation method, or may represent some embodiments or some implementation methods.

[0016] Those skilled in the art know that the embodiments of the present invention can be implemented as a system, device, apparatus, method or computer program product. Therefore, the present disclosure can be specifically implemented in the following forms, namely: complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0017] It should be noted that any number of elements in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning.

[0018] According to one embodiment of the present invention, a PT simulation method of an electric energy meter wiring simulation system is proposed, comprising the following steps: Step 1: The user installs the electric energy meter on the electric energy meter installation position of the device, and sets the abnormal fault status of the primary and secondary sides of the PT on the main control module. The device identifies the model and installation status of the electric energy meter through the installation status identification module; Step 2: According to the PT primary side fault set by the user, the main control module controls the primary and secondary side voltage conversion output module based on the general wiring system to output the voltage value of each phase on the primary side; Step 3: According to the installation status of the installed energy meter and the faults of the primary and secondary sides of the PT set by the user, the secondary voltage algorithm library calculates to obtain the voltage value of each phase on the secondary side and controls the output of the primary and secondary voltage conversion output module.

[0019] It is further explained that the primary-secondary voltage conversion output module and the installation status identification module are replacements for the PT, the primary and secondary wiring of the PT, and the secondary control circuit of the PT based on a general wiring system.

[0020] It is further explained that the secondary voltage algorithm library is trained with known abnormal data of electric energy meters, and the abnormal data of electric energy meters include the type of electric energy meter wiring, the type of electric energy meter wiring, the electric energy meter wiring method, the abnormal state, the voltage and phase output by the PT. The basic algorithm library is generated through training, and the basic algorithm library can generate universal data, and the universal data is an ideal value. Then, the secondary voltage algorithm library can generate authenticity data by injecting factors such as PT error coefficient, temperature and secondary load, and the authenticity data is dynamic.

[0021] Further explanation: when calling the secondary voltage algorithm library, the PT data of the current situation is calculated through correlation, and the error coefficient, temperature and secondary load are simulated at the same time, and the authenticity data is obtained by dynamic calculation. The specific process is as follows: Figure 3 As shown, including: According to the wiring type selected by the user, the primary side voltage is determined and randomized within a small range; The secondary voltage algorithm library calculates the secondary voltage based on the randomly obtained primary voltage; The error coefficient a is randomly obtained from the common PT prefabricated coefficients, and the secondary voltage value V2'=((V2 / V1)+a)*V1 is regenerated according to the error coefficient a; Take the load data of the currently installed electric energy meter as the secondary load value, pre-set the coefficient data c, and regenerate the secondary voltage value V2''=V2'*(1-c) according to the secondary load coefficient data; The temperature b is randomly obtained according to the running time and temperature variation law. The temperature b is used as the entropy value for distribution calculation to obtain the temperature influence coefficient b1; According to the temperature influence coefficient, the secondary voltage value V2'''=V2''*(1-b1) is regenerated; The value of temperature b is changed as the running time changes, and the secondary voltage value V2''' is recalculated.

[0022] According to another embodiment of the present invention, a PT simulation device of an electric energy meter wiring simulation system is provided, comprising: a main control module, an installation status identification module, and a primary-secondary voltage conversion output module.

[0023] The main control module is provided with a secondary voltage algorithm library. The main control module can receive the installation status identified by the installation status identification module, and obtain the voltage value to be output through the secondary voltage algorithm library in combination with the primary and secondary side faults of the PT set by the user, and then control the primary and secondary side voltage conversion output module to output each voltage value.

[0024] The installation status identification module is arranged at the electric energy meter installation station of each simulation surface, and can identify the model and installation status of the electric energy meter installed at the station.

[0025] The primary-secondary voltage conversion output module connects the power source with the simulation panel. Different from the general wiring system, it removes the PT, the primary and secondary wiring of the PT and the control circuit of the PT secondary, and adopts the primary side voltage conversion output circuit and the secondary side voltage conversion output circuit to convert the three-phase voltage value output by the power source and output the voltage value of each phase.

[0026] According to another embodiment of the present invention, there is provided an electronic device, comprising a processor and a memory, wherein the memory stores a computer program, and the computer program is loaded and executed by the processor to implement the PT simulation method of the above-mentioned electric energy meter wiring simulation system.

[0027] According to another implementation method of the present invention, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to implement the PT simulation method of the above-mentioned electric energy meter wiring simulation system.

[0028] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A PT simulation method for an electric energy meter wiring simulation system, characterized in that: The following steps are involved: Step 1: The user installs the electric energy meter on the electric energy meter installation position of the device, and sets the abnormal fault status of the primary and secondary sides of the PT on the main control module. The device identifies the model and installation status of the electric energy meter through the installation status identification module; Step 2: According to the PT primary side fault set by the user, the main control module controls the primary and secondary side voltage conversion output module based on the general wiring system to output the voltage value of each phase on the primary side; Step 3: According to the installation status of the installed energy meter and the faults of the primary and secondary sides of the PT set by the user, the secondary voltage algorithm library calculates to obtain the voltage value of each phase on the secondary side and controls the output of the primary and secondary voltage conversion output module.

2. The PT simulation method of the electric energy meter wiring simulation system according to claim 1, characterized in that: The primary-secondary voltage conversion output module and the installation status identification module are replacements for the PT, the primary and secondary wiring of the PT, and the secondary control circuit of the PT based on a general wiring system.

3. The PT simulation method of the electric energy meter wiring simulation system according to claim 1, characterized in that: The secondary voltage algorithm library is trained with known abnormal data of electric energy meters, and the abnormal data of electric energy meters include the type of electric energy meter wiring, the type of electric energy meter wiring, the electric energy meter wiring method, the abnormal state, the voltage and phase output by the PT. The basic algorithm library is generated through training, and the basic algorithm library can generate universal data, and the universal data is an ideal value. Then, the secondary voltage algorithm library can generate authenticity data by injecting factors such as PT error coefficient, temperature and secondary load, and the authenticity data is dynamic.

4. The PT simulation method of the electric energy meter wiring simulation system according to claim 3 is characterized in that: When the secondary voltage algorithm library is called, the PT data under the current situation is calculated through correlation, and the error coefficient, temperature and secondary load are simulated at the same time, and the authenticity data is obtained by dynamic calculation. The specific process includes: According to the wiring type selected by the user, the primary side voltage is determined and randomized within a small range; The secondary voltage algorithm library calculates the secondary voltage based on the randomly obtained primary voltage; The error coefficient a is randomly obtained from the common PT prefabricated coefficients, and the secondary voltage value is regenerated according to the error coefficient a; The load data of the currently installed electric energy meter is used as the secondary load value, the coefficient data c is prefabricated, and the secondary voltage value is regenerated according to the secondary load coefficient data; The temperature b is randomly obtained according to the running time and temperature variation law. The temperature b is used as the entropy value for distribution calculation to obtain the temperature influence coefficient b1; Regenerate the secondary voltage value according to the temperature influence coefficient; The value of temperature b is changed as the running time changes, and the secondary voltage value is recalculated.

5. A PT simulation device for an electric energy meter wiring simulation system, comprising: Main control module, installation status identification module, primary and secondary voltage conversion output module, specifically: The main control module is provided with a secondary voltage algorithm library, and the main control module can receive the installation status identified by the installation status identification module, and obtain the voltage value to be output through the secondary voltage algorithm library in combination with the fault of the primary and secondary sides of the PT set by the user, and then control the primary and secondary side voltage conversion output module to output each voltage value; The installation status identification module is arranged at the electric energy meter installation station of each simulation surface, and can identify the model and installation status of the electric energy meter installed at the station; The primary-secondary voltage conversion output module connects the power source with the simulation panel. Different from the general wiring system, it removes the PT, the primary and secondary wiring of the PT and the control circuit of the PT secondary, and adopts the primary side voltage conversion output circuit and the secondary side voltage conversion output circuit to convert the three-phase voltage value output by the power source and output the voltage value of each phase.

6. An electronic device, characterized in that: include: It comprises a processor and a memory, wherein a computer program is stored in the memory, and the computer program is loaded and executed by the processor to implement the PT simulation method of the electric energy meter wiring simulation system according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is loaded and executed by a processor to implement the PT simulation method of the electric energy meter wiring simulation system according to any one of claims 1 to 4.

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