Multifunctional electric energy metering simulation device and design method thereof

Abstract

The invention provides a multifunctional electric energy metering simulation device and a design method thereof, and relates to the technical field of electric power metering management, the device comprises a cabinet body, and a special transformer metering module, a load control module and a secondary loop module which are arranged on the cabinet body; the special transformer metering module comprises a three-phase intelligent electric energy meter, a special transformer acquisition terminal, a one-way switch, a combined test junction box and a terminal strip; the load control module is connected with the special transformer metering module, and the load control module comprises a terminal strip, an indicating lamp, a shunt trip switch and a voltage division button; the secondary circuit module is connected with the load control module, and the secondary circuit module comprises a voltage transformer, a current transformer, a primary wire and a secondary wire. According to the invention, through simple wiring, a real on-site metering mode of a special transformer customer can be realized, all-around training of personnel on-site skills and simulation and reproduction of various on-site faults can be realized, and the investigation and treatment capability of personnel on-site faults is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power metering management, and in particular to a multifunctional electric energy metering simulation device and a design method thereof. Background Art

[0002] The electric power industry is developing rapidly. In order to ensure that the production of the electric power industry and the measurement of electric energy can be carried out accurately, it is necessary to rely on accurate instruments to measure electric energy. Once an error occurs in the measurement process of the electric energy meter, it may cause great economic losses to users or power supply companies. In order to grasp this important link, electric energy metering personnel must also have higher business qualities and work skills. Before formal work, they need to master the various types of faults that occur in the wiring of three-phase three-wire and three-phase four-wire electric energy meters, so that they can calmly deal with various situations in future work. Therefore, it is essential to train the staff who are about to take up their posts in the power grid.

[0003] At present, the training equipment of power supply companies and skill training and evaluation centers (skill appraisal stations) were basically purchased more than ten years ago, and there are the following problems:

[0004] (1) The design concept of the training project is outdated and the functions are single, which cannot meet the employees' requirements for simulation of practical operation. The existing equipment cannot meet the training needs of new metering equipment such as smart energy meters and energy controllers, and the functions are single, such as energy meter installation or wrong wiring analysis.

[0005] (2) Most of the existing equipment is simulation-based, and there is no real simulation equipment. For example, the existing miswiring analysis equipment uses computer software to simulate various miswirings, and there are no real measuring devices such as voltage and current transformers, which cannot give trainees a real perceptual understanding. Most of the electricity meter installation equipment is to install wooden boards on old distribution cabinets, on which simple wiring exercises can be carried out, which is far from the actual metering cabinet on site.

[0006] (3) There is no simulation test equipment. At present, the equipment is limited to simple training (such as power meter wiring, wrong wiring simulation analysis). There is no power information collection terminal function test equipment, nor is there equipment for collection anomalies, metering anomalies and anti-electricity theft simulation. When testing and verification in this area is needed, only a temporary simulation test environment can be built, which is extremely inconvenient to use.

[0007] (4) When evaluating talents with meter installation and power connection skills (technicians, senior technicians, etc.), due to the lack of fully functional and easy-to-operate training equipment, the practical projects are too simple and single, and the most basic electricity meter and terminal joint wiring operations cannot be carried out (because operating this project on the current equipment is too time-consuming and costly). Only simple simulation analysis of incorrect wiring can be carried out, which cannot truly reflect the actual technical level of the personnel.

[0008] Therefore, in order to improve the on-site practical ability of measurement professionals, conduct functional test and verification of new energy metering equipment, practical assessment of professional skills appraisal, and concentrated practical training for competitions, etc., and create a learning and improvement platform for employees, it is necessary to develop standardized special transformer customer metering simulation devices. Through the metering simulation device, simulation detection, simulation training and skills appraisal can be carried out to achieve metering business skills training in the full simulation state of metering equipment, meet the practical training needs of front-line employees, and improve the intelligent metering skills of employees. Summary of the invention

[0009] In order to solve the above problems, the embodiments of the present invention provide a multifunctional electric energy metering simulation device and a design method thereof, which truly restores various metering services at the dedicated transformer customer site into the simulation device, and the metering simulation device and the actual metering device installed at the dedicated transformer customer site are basically consistent. The device functions and personnel training fully conform to the actual site conditions, achieving zero-distance connection between personnel training, functional testing and actual on-site metering equipment. The simulation device integrates multiple functions into one, and can simulate scenarios covering all metering and collection services currently at the dedicated transformer customer site.

[0010] In order to achieve the above-mentioned object, an embodiment of the present invention provides a multifunctional electric energy metering simulation device, the simulation device comprising a cabinet and a special transformer metering module, a load control module and a secondary circuit module arranged on the cabinet;

[0011] The special transformer metering module includes a three-phase smart energy meter, a special transformer acquisition terminal, a one-way switch, a joint test junction box and a terminal block;

[0012] The load control module is connected to the special transformer metering module, and the load control module includes a terminal block, an indicator light, a shunt trip switch, and a voltage dividing button;

[0013] The secondary circuit module is connected to the load control module, and the secondary circuit module includes a voltage transformer, a current transformer, a primary wire and a secondary wire.

[0014] Preferably, the simulation device further comprises a three-phase AC power source for outputting three-phase voltage and current, the amplitude and phase of which are adjustable.

[0015] Preferably, the simulation device further comprises a display control screen for display and control.

[0016] Preferably, the cabinet body is 1800 mm high, of which the lower part is 700 mm high, the upper part is 1100 mm high, the length is 1200 mm, the thickness of the lower part is 400 mm, and the thickness of the upper part is 300 mm.

[0017] Preferably, movable wheels are provided at the four corners of the bottom of the cabinet.

[0018] The embodiment of the present invention also provides a method for designing a multifunctional electric energy metering simulation device, the method comprising:

[0019] S1: Design a simulation device including a special transformer metering module, a load control module and a secondary circuit module;

[0020] S2: realizing wrong wiring analysis simulation by adjusting the wiring at the back of the simulation device;

[0021] S3: A special transformer customer metering simulation is realized by adjusting the wiring design of the special transformer metering module;

[0022] S4: Use an external field calibrator to achieve on-site calibration simulation wiring of electric energy meters with different metering methods.

[0023] Preferably, the special transformer metering module consists of a three-phase smart energy meter, a special transformer acquisition terminal, a one-way switch, a joint test junction box and a terminal block.

[0024] Preferably, the load control module is composed of a terminal block, an indicator light, a shunt trip switch, and a voltage divider button.

[0025] Preferably, the secondary circuit module is composed of a voltage transformer, a current transformer, a primary conductor and a secondary conductor.

[0026] Preferably, the metering method includes three-phase four-wire metering and three-phase three-wire metering.

[0027] It can be seen from the above technical solutions that the present invention has the following advantages:

[0028] 1. Multifunctional integration: The device of the present invention integrates simulation, testing and training functions into one, realizing multi-purpose, reducing the number of equipment configurations, and thus reducing the capital investment in testing and training. The device of the present invention can realize the functions of special transformer acquisition terminal function testing, meter installation and wiring of various metering methods, wrong wiring analysis of various metering methods, electric energy meter calibration, replacement of electric energy meters without power outage, voltage transformer secondary circuit voltage drop test, transformer secondary load test, special transformer terminal acquisition fault simulation, various metering fault simulations, various electricity theft methods simulations, customer side load precision control wiring debugging training, etc.

[0029] 2. Multi-scenario application: The device of the present invention can realize primary skill training for electric energy metering staff (the metering wiring adopts plug-in mode, the wires can be reused, and the wire consumption is reduced), advanced skill training for electric energy metering personnel (metering wiring process training, wrong wiring analysis, fault abnormality handling, etc.), practical training for electric energy metering, functional testing of electric energy collection terminals, and simulation verification of various collection, metering, and anti-electricity theft. The device can also be used as daily testing, training, and simulation equipment for power supply companies, as well as practical assessment equipment for personnel skill evaluation by electric energy metering related skill appraisal institutions and competition equipment for professional skills competitions.

[0030] 3. Modular design: The device of the present invention adopts modular design, which is convenient and quick to assemble and move. By simply changing the wiring, it can realize the rapid switching of multiple metering modes (high supply and high metering three-phase three-wire metering, high supply and high metering three-phase four-wire metering, high supply and low metering three-phase four-wire metering). BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the implementation cases of the present invention or the technical solutions in the prior art, the following is a brief description of the drawings required for use in the embodiments. By referring to the drawings, the features and advantages of the present invention will be more clearly understood. The drawings are schematic and should not be understood as limiting the present invention in any way. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0032] Figure 1 A schematic diagram of the structure of a multifunctional electric energy metering simulation device provided in an embodiment;

[0033] Figure 2 It is a schematic diagram of the arrangement of components of the multifunctional electric energy metering simulation device in the embodiment;

[0034] Figure 3 A flowchart of a method for designing a multifunctional electric energy metering simulation device provided in an embodiment

[0035] Figure 4 It is a wiring diagram of the energy controller and the terminal block in the embodiment;

[0036] Figure 5 This is a wiring diagram of a three-phase shunt trip switch control circuit in an embodiment;

[0037] Figure 6 It is a wiring diagram of the multifunctional electric energy metering simulation device in the embodiment adopting the high supply and low metering metering mode;

[0038] Figure 7 It is a wiring diagram of the multifunctional electric energy metering simulation device in the embodiment adopting a high-supply and high-metering three-phase three-wire metering method (three-phase three-wire meter + three-phase three-wire terminal);

[0039] Figure 8 It is a wiring diagram of the multifunctional electric energy metering simulation device in the embodiment adopting a high-supply and high-metering three-phase four-wire metering method (three-phase four-wire meter + three-phase three-wire terminal);

[0040] Fig. 9 It is a wiring diagram of the multifunctional electric energy metering simulation device in the embodiment adopting a high-supply and high-metering three-phase four-wire metering method (three-phase four-wire meter + three-phase four-wire terminal);

[0041] Fig.10 This is a schematic diagram of the transformer connection of the multifunctional electric energy metering simulation device in the embodiment. Fig.10 (a) is high supply and high meter (three-phase three-wire), Fig.10 (b) High supply and high meter (three-phase four-wire), Fig.10 (c) High supply and low calculation

[0042] Fig.11 The wiring diagram for the field verification of the multifunctional electric energy metering simulation device using three-phase four-wire metering in the embodiment;

[0043] Fig.12 This is a wiring diagram for field verification of three-phase three-wire metering using a multifunctional electric energy metering simulation device in an embodiment.

[0044] Figure numerals in the specification: 1. Three-phase intelligent energy meter; 2. Special transformer acquisition terminal; 3. One-way switch; 4. Combined test junction box; 5. Terminal block; 6. Display control panel; 7. Three-phase shunt trip switch; 8. Voltage transformer; 9. Current transformer; 10. Three-phase AC power source. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1

[0047] In order to achieve metrology business skills training in the full simulation state of metrology equipment, meet the practical training needs of front-line employees, and improve the intelligent metrology skills of employees. Figure 1 As shown, an embodiment of the present invention provides a multifunctional electric energy metering simulation device, which includes a cabinet and a special transformer metering module, a load control module and a secondary circuit module arranged on the cabinet;

[0048] The special transformer metering module includes a three-phase intelligent electric energy meter 1, a special transformer acquisition terminal 2, a one-way switch 3, a joint test junction box 4 and a terminal block 5;

[0049] The load control module is connected to the special transformer metering module, and the load control module includes a terminal block, an indicator light, a shunt trip switch, and a voltage dividing button;

[0050] The secondary circuit module is connected to the load control module, and the secondary circuit module includes a voltage transformer 8, a current transformer 9, a primary conductor and a secondary conductor.

[0051] It can be seen from the above technical scheme that the present invention provides a multifunctional electric energy metering simulation device, which mainly includes a special transformer metering module composed of a three-phase intelligent electric energy meter, a special transformer acquisition terminal, a one-way switch, a joint test junction box and a terminal block, a load control module composed of a terminal block, an indicator light, a shunt trip switch, and a voltage divider button, and a voltage transformer, a current transformer, a primary wire and a secondary wire. Through simple wiring, the present invention can realize the real on-site metering method of special transformer customers, that is, high-supply and high-metering three-phase three-wire metering, high-supply and high-metering three-phase four-wire metering, and high-supply and low-metering three-phase four-wire metering. The present invention can realize all-round on-site skills training of personnel (all on-site work such as wiring, acquisition, and testing), as well as simulation and reproduction of various types of faults on site, and improve the ability of personnel to investigate and deal with on-site faults.

[0052] In this embodiment, the simulation device of the present invention further comprises a three-phase AC power source 10 for outputting three-phase voltage and current, the amplitude and phase of which are adjustable.

[0053] like Figure 2 As shown, the simulation device of the present invention includes 4 three-phase shunt trip switches 7, 3 voltage transformers 8, and 3 current transformers 9. Each three-phase shunt trip switch 7 includes a terminal block, an indicator light, a shunt trip switch, and a voltage dividing button. The voltage transformer ratio is: 380 / √3 / 100 / √3, and the current transformer is 10A / 5A.

[0054] In this embodiment, the simulation device of the present invention further includes a display control screen 6, which is a PC display screen and is used for display and control.

[0055] In this embodiment, the cabinet body is 1800 mm high, of which the lower part is 700 mm high, the upper part is 1100 mm high, the length is 1200 mm, the lower part is 400 mm thick, and the upper part is 300 mm thick.

[0056] In this embodiment, movable wheels are provided at the four corners of the bottom of the cabinet to facilitate the movement and transportation of the device.

[0057] Therefore, the main functions that can be achieved by the simulation device of the present invention include:

[0058] (1) Basic training on customer metering devices for special transformers. This training is to provide on-site wiring training on customer metering devices for new personnel engaged in metering work, so that the trainees can basically master the on-site wiring principles of metering devices and can connect them correctly.

[0059] (2) Advanced training on metering devices for special transformer customers. This training is to provide metering personnel with on-site wiring technology for metering devices, so that trainees can master the installation of voltage transformers, current transformers, electric energy meters, and special transformer acquisition terminals, as well as the joint wiring technology skills.

[0060] (3) On-site verification training of electricity meters under actual load.

[0061] (4) Training on voltage transformer secondary circuit voltage drop test.

[0062] (5) Secondary load test training: To enable trainees to master the skills of on-site voltage transformer and current transformer secondary load testing.

[0063] (6) Metering fault analysis training. Simulate various on-site metering faults of special transformer metering devices to enable trainees to master on-site metering fault analysis and judgment, troubleshooting, correct wiring, and electricity tracking (refund) skills.

[0064] (7) Specialized customer acquisition training. It enables trainees to master the skills of on-site RS485 wiring, acquisition terminal parameter setting, acquisition debugging, and acquisition fault diagnosis and processing.

[0065] (8) Training on demand-side load precision control. This allows trainees to master the skills of on-site load switch tripping, closing, wiring and debugging.

[0066] The application scope of the simulation device of the present invention includes:

[0067] (1) Power supply companies or training institutions shall carry out practical basic skills training for new employees and employees who have changed positions.

[0068] (2) Power supply companies or training institutions shall carry out practical advanced skills training for marketing metering personnel.

[0069] (3) The skill training base (center) conducts practical assessment of skills at all levels of the marketing profession.

[0070] (4) Carry out practical skills training and competitions at all levels of marketing majors.

[0071] Embodiment 2

[0072] like Figure 3 As shown, the present invention provides a multifunctional electric energy metering simulation device design method, comprising:

[0073] S1: Design a simulation device including a special transformer metering module, a load control module and a secondary circuit module;

[0074] S2: realizing wrong wiring analysis simulation by adjusting the wiring at the back of the simulation device;

[0075] S3: A special transformer customer metering simulation is realized by adjusting the wiring design of the special transformer metering module;

[0076] S4: Use an external field calibrator to achieve on-site calibration simulation wiring of electric energy meters with different metering methods.

[0077] In this embodiment, the dedicated transformer metering module is composed of a three-phase intelligent electric energy meter 1, a dedicated transformer collection terminal 2, a one-way switch 3, a joint test junction box 4 and a terminal block 5.

[0078] In this embodiment, the load control module is composed of a terminal block, an indicator light, a shunt trip switch, and a voltage divider button.

[0079] In this embodiment, the secondary circuit module is composed of a voltage transformer 8, a current transformer 9, a primary conductor and a secondary conductor.

[0080] In this embodiment, the wiring method of the load control module is designed as follows: Figure 4 , Figure 5 As shown, Figure 4 This is the wiring diagram of the energy controller and terminal block. Figure 5 This is a wiring diagram of the three-phase shunt trip switch control circuit.

[0081] In this embodiment, by adjusting the wiring design of the special transformer metering module, the special transformer customer metering simulation is realized. Specifically, during the wrong wiring analysis, the metering wiring is performed on the back of the device, and the wiring is changed from the back of the device to simulate various wrong wirings. The real wiring situation cannot be seen from the front of the device. The trainees perform data measurement and wrong wiring analysis on the front of the device, and can verify the wrong wiring analysis results with the actual wiring situation on the back of the device, which increases the trainees' perceptual understanding of the wrong wiring situation and improves the trainees' skill level.

[0082] In this embodiment, by adjusting the wiring design of the dedicated transformer metering module, the dedicated transformer customer metering simulation is realized. Specifically, it includes high supply and low metering, high supply and high metering three-phase three-wire metering (three-phase three-wire meter + three-phase three-wire terminal), high supply and high metering three-phase four-wire metering (three-phase four-wire meter + three-phase three-wire terminal), high supply and high metering three-phase four-wire metering (three-phase four-wire meter + three-phase four-wire terminal), transformer wiring (high supply and high meter (three-phase three-wire), high supply and high meter (three-phase four-wire), high supply and low meter), as shown in the following figure. Figures 6 to 10 .

[0083] In this embodiment, an external field calibration instrument is used to implement field calibration simulation wiring of electric energy meters of different metering methods. The metering methods include three-phase four-wire metering and three-phase three-wire metering. Fig.11 , Fig.12 As shown, Fig.11 The wiring diagram for the field verification of three-phase four-wire metering is adopted for the multifunctional electric energy metering simulation device. Fig.12 A three-phase three-wire metering on-site verification wiring diagram is used for the multifunctional electric energy metering simulation device.

[0084] It can be seen from the above technical solution that the innovations and advantages of the present invention are:

[0085] 1. Multifunctional integration

[0086] The device of the present invention integrates simulation, testing and training functions into one, realizes multi-purpose, reduces the number of equipment configurations, and thus reduces the capital investment in testing and training. The electric energy metering simulation device can realize the functions of special transformer acquisition terminal function test, meter installation and wiring of various metering methods, wrong wiring analysis of various metering methods, electric energy meter calibration, non-stop replacement of electric energy meters, voltage transformer secondary circuit voltage drop test, transformer secondary load test, special transformer terminal acquisition fault simulation, various metering fault simulations, various electricity theft methods simulations, customer side load precision control wiring debugging training, etc.

[0087] 2. Multi-scenario application

[0088] The device of the present invention can realize primary skill training for electric energy metering staff (the metering wiring adopts plug-in mode, the wire can be reused, and the wire consumption is reduced), advanced skill training for electric energy metering personnel (metering wiring process training, wrong wiring analysis, fault abnormality processing, etc.), practical training for electric energy metering, functional testing of electric energy collection terminals, and simulation verification of various collection, metering, and anti-electricity theft. The device can also be used as daily testing, training, and simulation equipment for power supply companies, as well as practical assessment equipment for personnel skill evaluation by electric energy metering related skill appraisal institutions and competition equipment for professional skill competitions.

[0089] 3. Modular design

[0090] The device of the present invention adopts modular design, which is convenient and quick to assemble and move. By simply changing the wiring, it can realize the rapid switching of multiple metering modes (high supply and high metering three-phase three-wire metering, high supply and high metering three-phase four-wire metering, high supply and low metering three-phase four-wire metering).

[0091] 4. The device of the present invention fills the gap of domestic simulation training equipment through resource integration and application integration. At present, there is no equipment integrating testing, simulation and training functions in China.

[0092] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multifunctional electric energy metering simulation device, characterized in that: It includes a cabinet body and a special transformer metering module, a load control module and a secondary circuit module arranged on the cabinet body; The special transformer metering module includes a three-phase smart energy meter, a special transformer acquisition terminal, a one-way switch, a joint test junction box and a terminal block; The load control module is connected to the special transformer metering module, and the load control module includes a terminal block, an indicator light, a shunt trip switch, and a voltage dividing button; The secondary circuit module is connected to the load control module, and the secondary circuit module includes a voltage transformer, a current transformer, a primary wire and a secondary wire.

2. The multifunctional electric energy metering simulation device according to claim 1, characterized in that: The simulation device also includes a three-phase AC power source for outputting three-phase voltage and current, the amplitude and phase of which are adjustable.

3. The multifunctional electric energy metering simulation device according to claim 1, characterized in that: The simulation device also includes a display control screen for display and control.

4. The multifunctional electric energy metering simulation device according to claim 1, characterized in that: The cabinet body is 1800mm high, of which the lower part is 700mm high and the upper part is 1100mm high, and the length is 1200mm. The thickness of the lower part is 400mm and the thickness of the upper part is 300mm.

5. The multifunctional electric energy metering simulation device according to claim 1, characterized in that: The four corners of the bottom of the cabinet are provided with movable wheels.

6. A multifunctional electric energy metering simulation device design method, characterized in that: include: S1: Design a simulation device including a special transformer metering module, a load control module and a secondary circuit module; S2: realizing wrong wiring analysis simulation by adjusting the wiring at the back of the simulation device; S3: A special transformer customer metering simulation is realized by adjusting the wiring design of the special transformer metering module; S4: Use an external field calibrator to achieve on-site calibration simulation wiring of electric energy meters with different metering methods.

7. The design method of a multifunctional electric energy metering simulation device according to claim 6, characterized in that: The special transformer metering module is composed of a three-phase intelligent electric energy meter, a special transformer acquisition terminal, a one-way switch, a joint test junction box and a terminal block.

8. The method for designing a multifunctional electric energy metering simulation device according to claim 6, characterized in that: The load control module is composed of a terminal block, an indicator light, a shunt trip switch, and a voltage divider button.

9. The design method of a multifunctional electric energy metering simulation device according to claim 6, characterized in that: The secondary circuit module is composed of a voltage transformer, a current transformer, a primary conductor and a secondary conductor.

10. The design method of a multifunctional electric energy metering simulation device according to claim 6, characterized in that: The metering methods include three-phase four-wire metering and three-phase three-wire metering.

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