CN205594947U - Real device of instructing of split type energy metering equipment and terminal installation wiring - Google Patents

Abstract

The utility model discloses a split-type electric energy metering device and a terminal installation and wiring training device, which comprises a cabinet body of the same style as the on-site electric energy metering cabinet; the cabinet body is a split-type cabinet body, including an upper cabinet body and a lower cabinet body The upper cabinet is used for laying out electric energy metering equipment, electricity information collection terminals and test junction boxes; the lower cabinet is used for laying out transformer devices; the electric energy metering device and transformer device are connected by wires, and the upper cabinet The two connections with the lower cabinet body adopt plug-in card joints; the cabinet body includes three operation surfaces on the left side, the front side and the right side, and the three operation surfaces are respectively equipped with straight-through electric energy metering devices, A three-phase four-wire low-voltage electric energy metering device and a high-voltage electric energy metering device; the transformer device includes a voltage transformer and a current transformer. The utility model is a split design, which is consistent with the typical metering method used in actual work, and increases the realism of the metering site.

Description

Split type electric energy metering equipment and terminal installation and wiring training device

technical field

The utility model relates to an electric power training simulation device, in particular to a split type electric energy metering device and a terminal installation and wiring training device.

Background technique

In the past 20 years, for most of the electric energy metering simulation training devices or simulation training devices, the cabinet body is integrated, and its appearance and operation table are quite different from the real electric energy metering boxes on site. For electric energy metering devices used on site, the design of related metering simulation circuits is too complicated, the cost is high, the functions of the operating software are similar and many functions are outdated or have no practical value, the wiring forms are changeable and inconsistent with the site, the operation is dangerous, and the power consumption Generally higher. Moreover, the existing electric energy metering simulation device or simulation device only focuses on the setting function of the wrong wiring category on site, without the function of installing wiring, which is quite different from the actual metering device on site. New employees or transfer personnel often lack corresponding Practical work experience, not very familiar with the site, if the training device is inconsistent with the on-site electric energy metering device, and if the operation method of the training device is inconsistent with the operation method of the on-site metering device, it will definitely cause misleading effects and lose the meaning of training.

In addition, the traditional conventional training device is a test-oriented product, especially the identification test. Although the number of questions is large, the quality is not high. The design of the diagram remains complicated and random; the utility model is a product dominated by on-site training, especially installation and wiring training, which is closely related to the actual work of electric energy measurement, and the actual work is guided by training, which can fully meet the current production technology training. Many new requirements.

Therefore, the utility model not only overcomes the shortcomings that the electric energy metering equipment in the on-site power grid cannot be arbitrarily set up, and the on-site training cannot repeatedly perform standardized wiring training, but also changes the conventional general-purpose training simulation device. Poor shortcomings, let the trainees learn how to use (know how to work), use the standard (can work in a standardized way), so as to maximize the training effect.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of training equipment from cabinet appearance design, operation table design, training function, function design, wiring technology, production technology, equipment components, current source design to various defects of existing training devices. , new technology applications, and drive software and many other aspects have breakthroughs and innovations in electric energy metering equipment and terminal installation and wiring training devices.

The technical scheme that the utility model solves its technical problem adopts is:

A split-type electric energy metering equipment and terminal installation wiring training device, including a cabinet with the same style as the on-site electric energy metering cabinet, and an electric energy metering device installed in the cabinet, a transformer device, and a wire for simulating a secondary circuit data line, electricity information collection terminal and power supply; it is characterized in that the cabinet is a split cabinet, including an upper cabinet and a lower cabinet, and the upper cabinet is used for laying out electric energy metering equipment, power consumption An information collection terminal and a test junction box; the lower cabinet is used for laying out the transformer device; the electric energy metering device and the transformer device in the upper cabinet and the lower cabinet are connected by a data line, and the data line is connected with the upper cabinet and the lower cabinet The connection between the bodies adopts a plug-in card joint;

The electric energy metering device includes a straight-through electric energy metering device, a three-phase four-wire low-voltage electric energy metering device, and a high-voltage electric energy metering device; The straight-through electric energy metering device, the three-phase four-wire low-voltage electric energy metering device and the high-voltage electric energy metering device are respectively arranged on the surface;

The transformer device includes a voltage transformer and a current transformer, and the current transformer is a non-open circuit current transformer.

According to the above scheme, the straight-through electric energy metering device includes a low-voltage air switch with leakage protection and a single-phase or three-phase smart meter; the three-phase four-wire low-voltage electric energy metering device includes a three-phase four-wire low-voltage active energy meter and a three-phase A four-wire low-voltage collection terminal; the high-voltage electric energy metering device includes a three-phase four-wire high-voltage active energy meter and a three-phase four-wire high-voltage collection terminal, or a three-phase three-wire high-voltage active energy meter and a three-phase three-wire high-voltage collection terminal.

According to the above scheme, the upper cabinet has a built-in retractable and concealable measuring instrument shelf; the upper cabinet has a built-in retractable and concealable measuring lighting top light shelf.

According to the above-mentioned scheme, the junction box is an external type, a real test junction box specially used for electric energy measurement of my country's power grid.

This split design is not only consistent with the on-site electric energy metering device, but also facilitates handling and installation because the data wire used to simulate the secondary circuit connection wire can be pulled out, and at the same time reduces the requirements for site specifications.

The test junction box is external, and the wiring of the power supply side and the load side of the junction box is exactly the same as the field; the conventional method is either no external junction box, or a feedback device for the actual wiring of the feedback electric energy meter to the control computer is set. This feedback mechanism is not very useful at all, and it seriously destroys the sense of presence.

The utility model adopts the wiring mesh plate, which is convenient for installation and wiring training, and is conducive to the promotion of standardized wiring; at the same time, it abandons the conventional practice of setting up additional wiring piles, and the utility model directly uses real equipment such as electric energy meters, collection terminals, and junction boxes Terminals for installation and wiring. Disadvantages of the method of setting up wiring piles: increase the point of failure; increase costs; destroy the sense of presence.

The utility model is designed with three operation surfaces, which meets the requirements of different metering scenarios on site; at the same time, the design of the cabinet door is consistent with the door of the metering box on site, which enhances the sense of the scene; and the inner side of the cabinet is designed with a retractable test instrument shelf and a ceiling lamp for lighting , which is convenient for testers to use.

The beneficial effects produced by the utility model are: compared with the existing device, the utility model has the following advantages:

1. The utility model is "split type": the upper cabinet imitates the on-site "electric energy metering box" or "electric energy meter box"; the lower cabinet imitates the on-site "transformer cabinet" or "transformer box"; the upper cabinet The bodies are connected by a "data cable" that mimics the "secondary cable" in the field.

Moreover, the electric energy metering box or electric meter box is divided into three typical metering methods according to the site: single-phase electric energy metering, three-phase four-wire low-voltage electric energy metering, and high-voltage electric energy metering are separated and independent. on site.

A whole device of the utility model is made into three different typical metering methods, which can share one set of power source and one set of general equipment; while the traditional one whole device is made into three identical metering unit stations (i.e. The same 3 stations), it is obvious that the cost of the traditional method is very high, because: according to the traditional conventional method, three different typical measurement methods must be made into at least 3 different simulation devices, and the user needs to purchase 3 simulation devices. device just can satisfy all functions of a training device of the present utility model.

2. It adopts the design of non-open circuit current transformer, which will not generate high voltage, and the performance is safe and reliable. (Utility model patent number: 201420213989.X)

3. Realized the primary real current output current up to 100A, using a real current transformer, while ensuring the safety of the measurer and the safety of the equipment; the transformation ratio of the transformer is variable; the heat generation of the equipment is low, and the energy consumption is low Low.

4. It is convenient to actually measure the transformation ratio of the current transformer; the actual on-site calibration of the current transformer error is realized, and the use of the on-site calibrator can be easily trained; the primary (large) current measurement is realized, and the clamp can be easily trained The use of shape ammeter. This function has not been implemented in all products at present, but the training, teaching and appraisal examination work urgently needs "on-site verification function of transformer".

5. The junction box is external, and the wiring of the power supply side and the load side of the junction box is exactly the same as the field; since most manufacturers use the test terminal, the design of the body avoids the frequent use of the terminal. Breakout creates a safety risk of an open circuit and electric shock.

6. The wiring on the secondary side of the transformer is consistent with the site, and adopts the standard connection method; the connecting wires used have a margin when installing the wiring, but they are not connected in a spiral shape, which will not consume electric energy and is convenient for users to reconnect. wiring.

The back plate of the hanging meter of the traditional live simulation table adopts a solid iron plate, there is no "wiring mesh plate", and the installation and wiring practice cannot be performed; the utility model can conveniently carry out repeated installation and wiring exercises of the electric energy meter and the collection terminal. At the same time, it is beneficial to promote the correct wiring method.

7. On the operating table, the unused components and pile heads in the on-site electric energy metering device are cleverly hidden, so that the user can easily see only the electric energy metering equipment and components that are completely consistent with the on-site.

8. It is designed to use software to change the working state of the collection terminal in real time, realize the different actual working states of the simulated field collection terminal, and increase the training and examination functions of the utility model.

9. Designed the use of software to operate the on-off function of the primary or secondary voltage in real time, and fully realize the functions of "real-time power stop and transmission" without turning off the power supply of the platform, which not only improves the difficulty level and discrimination of the test, but also makes it easier Close to actual work on site.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the structural representation of the utility model embodiment;

Figure 2 is an example of the layout of the internal components of a typical electric energy metering box.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, an electric energy metering equipment and terminal installation wiring training device, including: a cabinet with the same style as the on-site electric energy metering cabinet, and an electric energy metering device, a transformer device, and a data line installed in the cabinet and a power supply; it is characterized in that the cabinet is a split cabinet, including an upper cabinet and a lower cabinet, and the upper cabinet is used for laying out electric energy metering equipment, power consumption information collection terminals and test junction boxes; The lower cabinet is used for laying out the transformer device; the electric energy metering device and the transformer device in the upper cabinet and the lower cabinet are connected by secondary circuit wires, and the two connections between the upper cabinet and the lower cabinet are plugged. Cassette joint;

Figure 2 is an example of the layout of the internal components of a typical electric energy metering box. The electric energy metering device includes a straight-through electric energy metering device, a three-phase four-wire low-voltage electric energy metering device and a high-voltage electric energy metering device; the cabinet body includes a left side, a front side and a right side There are three operation surfaces on the surface, and the three operation surfaces are respectively equipped with a straight-through electric energy metering device, a three-phase four-wire low-voltage electric energy metering device and a high-voltage electric energy metering device;

The transformer device includes a voltage transformer and a current transformer, and the current transformer is a non-open circuit current transformer.

The device of the utility model has the following characteristics: (1) The box body of the same style as the electric energy metering box commonly used in the field, and equipment such as electric energy metering meters, electricity information collection terminals, and test junction boxes installed in the box body. The equipment used on site is exactly the same; (2) the transformer cabinet, and the current transformer and voltage transformer installed in the cabinet, the transformer used in it is a simulation transformer, and some control equipment; (3) the simulation two Secondary circuit wire, this wire is actually the data line or communication line connecting the transformer cabinet and the electric energy metering box, and the connection at both ends adopts plug-in card connectors.

The utility model is designed with three operation surfaces, which meets the requirements of different metering scenarios on site; at the same time, the design of the cabinet door is consistent with that of the metering box door on site, which enhances the sense of the scene; and the inner side of the cabinet is designed with a retractable test instrument shelf and a lighting top lamp, It is convenient for testers to use.

The bottom of the cabinet is designed with ventilation holes, which has good ventilation, heat dissipation and moisture-proof effect.

Universal casters and fixed feet are installed at the bottom of the cabinet for easy moving and fixing.

On the basis of this electric energy metering equipment and terminal installation and wiring training device, a set of single-phase, low-voltage three-phase four-wire, high-voltage three-phase three-wire, high-voltage three-phase four-wire, TA and TV are integrated for training and examination needs. The mathematical model and logic operation software of the wiring make it possible to realize various wiring situations that may occur on site through computer program simulation.

Through the use of this comprehensive training and teaching device and its supporting software, the following functions can be realized:

(1) The wiring methods cover a wide range of types and can realize tens of thousands of wiring methods, including:

①Three-phase three-wire system (via TV, TA wiring, TA four-wire system)

②Three-phase four-wire system (via TV, TA wiring, TA six-wire system)

③Three-phase four-wire system (via TA without TV connection, TA six-wire system)

④Three-phase four-wire system (direct access type)

⑤Three-phase five-wire system (direct access type)

⑥Single-phase two-wire system (direct access type)

⑦Single-phase three-wire system (direct access type)

(2) There are 48 common three-phase three-wire basic wiring shortcut keys, which can be quickly and conveniently searched, simulated, and convenient for practical training and teaching.

(3) The newly-added "examination question bank" with different difficulty levels with clear distinction can choose any combination of test questions through the computer interface, and the computer simulation system software can simulate wiring for any test question in the test question bank.

(4) For wrong wiring with TV open circuit, TA short circuit and open circuit, this system has a special "recovery button", which can directly restore live electricity in real time, so that users can judge and correct wiring.

(5) Equipped with voltage circuit short-circuit protection and alarm function. When A, B, and C are operated at the same time, the protection alarm of the station with illegal operation will not affect the operation process of other stations.

(6) Equipped with the current loop open circuit protection alarm function, this function has a unique design, when the wrong wiring set by the system software is the current loop open circuit, the system will not alarm; when the system software does not set the current loop open circuit, but When the current loop is disconnected due to operator misoperation, the system will alarm.

(7) TV and TA can simulate the scene for grounding or non-grounding.

(8) It can print on-site verification records, test questions, phasor diagrams, wiring diagrams, correction coefficients and refunded electricity.

(9) There is an "on-site verification record form for electric energy meter" specially for metering field users, and the computer can automatically print out the work report.

(10) It can simulate a wrong connection of TV, and can arbitrarily combine various connection methods of transformers.

(11) The newly added "power return intelligent calculation function" inputs the data of the work site test into the control computer, and the computer can judge the actual wiring mode according to the input data, and automatically draw the phasor diagram, wiring diagram, and calculate Correct the coefficient, and automatically calculate the average power factor and return and supplement electricity based on the records of active and reactive power.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (4)

1. A split-type electric energy metering equipment and terminal installation and wiring training device, including a cabinet with the same style as the on-site electric energy metering cabinet, and an electric energy metering device and a transformer device installed in the cabinet for simulating secondary The data line of the loop wire, the power consumption information collection terminal and the power supply; it is characterized in that the cabinet body is a split cabinet body, including an upper cabinet body and a lower cabinet body, and the upper cabinet body is used for laying out electric energy metering equipment, The electricity information collection terminal and the test junction box; the lower cabinet is used for laying out the transformer device; the electric energy metering device and the transformer device in the upper cabinet and the lower cabinet are connected by a data line, and the data line is connected with the upper cabinet and the The connection between the lower cabinets adopts plug-in card joints; The training device includes a straight-through electric energy metering device, a three-phase four-wire low-voltage electric energy metering device and a high-voltage electric energy metering device; The straight-through electric energy metering device, the three-phase four-wire low-voltage electric energy metering device and the high-voltage electric energy metering device are respectively arranged on the surface; The transformer device includes a voltage transformer and a current transformer, and the current transformer is a non-open circuit current transformer. 2. The split-type electric energy metering device and terminal installation and wiring training device according to claim 1, wherein the straight-through electric energy metering device includes a low-voltage air switch with leakage protection and a single-phase or three-phase smart meter; The three-phase four-wire low-voltage electric energy metering device includes a three-phase four-wire low-voltage active energy meter and a three-phase four-wire low-voltage acquisition terminal; the high-voltage electric energy metering device includes a three-phase four-wire high-voltage active energy meter and a three-phase four-wire high-voltage acquisition terminal terminal, or a three-phase three-wire high-voltage active energy meter and a three-phase three-wire high-voltage collection terminal. 3. The split-type electric energy metering equipment and terminal installation wiring training device according to claim 1, characterized in that, the upper cabinet has a built-in retractable and concealable shelf for measuring instruments; the upper cabinet Body built-in retractable, concealable measuring lighting ceiling light shelf. 4. The split-type electric energy metering equipment and terminal installation wiring training device according to claim 1, characterized in that, the junction box is an external type, a real test junction box dedicated to electric energy metering in my country's power grid.