CN102324204B - Combined table for simulated training of verification of transformer - Google Patents

Abstract

The invention discloses a transformer verification and simulation training combined platform, which comprises: a voltage and current transformer load box, a transformer calibrator, a voltage regulation control box, a current booster, a test transformer and a cabinet with a hollow structure inside. The voltage and current transformer load box, transformer calibrator, voltage regulation control box, current booster and test transformer are arranged in the cabinet, and the voltage and current transformer load box, transformer calibrator, voltage regulation control box , the operation panel of the current booster and the test transformer are set on the table top of the cabinet, and the table top is also provided with a standard transformer installation surface and a tested transformer installation surface, and the standard transformer installation surface and the tested transformer installation surface The transformer mounting surface is provided with a transformer terminal for connecting the transformer, and the transformer terminal is correspondingly connected with the equipment in the cabinet to form a transformer verification circuit. The invention has the characteristics of simple structure, convenient operation and safe use. It is suitable for transformer verification simulation training.

Description

Transformer verification simulation training combination platform

technical field

The invention relates to a transformer verification simulation training equipment, in particular to a transformer verification simulation training combination platform.

Background technique

Before the present invention was proposed, with the investment in smart grid technology and the continuous improvement of the metrology supervision and management system, there were higher and more specific requirements for the professional skills of metrology personnel. In recent years, the number of personnel engaged in the verification of electric energy measurement has been increasing, but the knowledge update is slow, the professional knowledge and work level of the verification personnel are uneven, and there are few interdisciplinary talents. To provide good measurement technical support for building a resource-saving society and ensure accurate, consistent, and reliable transmission of electric energy values, it is necessary to effectively improve the professional quality and professional skills of electric energy measurement and verification personnel.

At present, most domestic electric power measurement training institutions carry out theoretical teaching in classrooms and on-site wiring in laboratories when conducting transformer verification training. During the theoretical training, it is impossible to carry out training in the way of teaching while operating, and the effect of theoretical training is not good. The transformer verification simulation training equipment in the laboratory generally includes voltage and current transformer load boxes, transformer calibrators, voltage regulation control boxes, current boosters, test transformers, precision voltage transformers, precision current transformers and several tested Transformer: These devices are generally scattered in the laboratory. During the practical training process, all devices must be connected to the power line for wiring and disconnection. The operation is very troublesome, and the scattered devices take up a lot of space; In particular, when wiring the current transformer, the current transformer must be inserted into the power line, and the operation is complicated; and the voltage level of the field equipment is relatively high, if the trainees do not fully grasp the essentials of operation, safety accidents will easily occur.

Contents of the invention

In order to solve the problem in the prior art that the practice training operation is very complicated and takes up a lot of space because all the devices are scattered in the laboratory, the present invention provides a transformer verification simulation training combination platform. Described technical scheme is as follows:

A combination platform for transformer verification and simulation training, comprising: a voltage and current transformer load box, a transformer calibrator, a voltage regulation control box, a current booster, a test transformer and a cabinet with a hollow structure inside. Transformer load box, transformer calibrator, voltage regulation control box, current booster and test transformer are arranged in the cabinet, the voltage and current transformer load box, transformer calibrator, voltage regulation control box, current booster and the operation panel of the test transformer are set on the table top of the cabinet, and the table of the cabinet is also provided with a standard transformer installation surface and a tested transformer installation surface, and the standard transformer installation surface and the tested transformer The transformer installation surface is provided with a transformer terminal for connecting the transformer, and the transformer terminal is correspondingly connected with the equipment in the cabinet to form a transformer verification circuit.

In the above scheme, the number of the standard transformer installation surface is at least one, and the number of the tested transformer installation surface is at least one, and the number of the standard transformer installation surface and the tested transformer installation surface is based on the actual simulation. Training needs design.

In the above solution, there are two standard transformer mounting surfaces, and a precision transformer mounting plate is provided on each standard transformer mounting surface, and the transformer terminal is arranged on the precision transformer mounting plate. The number of precision transformer mounting plates is designed according to the actual simulation training needs.

In the above scheme, there are two mounting surfaces of the tested transformer, and each installed surface of the tested transformer is respectively provided with at least one tested transformer mounting plate, and the transformer terminal is arranged on the tested transformer. On the mounting plate, the number of mounting plates of the tested transformer is designed according to the actual simulation training needs.

In the above solution, the precision transformer mounting plate is a precision voltage transformer mounting plate or/and a precision current transformer mounting plate, and the type of the precision transformer mounting plate is designed according to the actual simulation training needs.

In the above solution, the tested transformer mounting board is the tested voltage transformer mounting board or/and the tested current transformer mounting board, and the type of the tested transformer mounting board is designed according to the actual simulation training needs.

In the above scheme, the main power terminal and the grounding terminal are also provided on the table of the cabinet, and the total power terminal and the grounding terminal are connected to the transformer verification circuit to provide power for the device.

In the above solution, a power switch is also provided on the table of the cabinet, and the power switch is connected to the test circuit of the transformer.

In the above scheme, an alarm is also provided on the table of the cabinet, and the alarm is connected to the test circuit of the transformer to play a warning function, so that an accident can be found as soon as possible.

Include differential pressure, differential current control circuit in described transformer testing circuit, described differential pressure, differential current control circuit comprise: signal acquisition, range conversion circuit, U/I conversion circuit, filtering circuit, phase-shifting circuit (to signal In-phase, quadrature transformation), D/A conversion, power amplifier, adder. The standard voltage, current transformer secondary side voltage, and current signals are directly connected to the input terminal of the D/A conversion circuit after signal acquisition, range conversion, and filter circuit, and the other is connected to the D/A after the quadrature phase-shifting circuit. The input end of the conversion circuit and the output end of the two-way D/A conversion are connected to the input end of the adder after passing through the power amplifier circuit, and the output end of the adder outputs preset differential pressure and differential current. In this way, based on precision voltage transformers or/and precision current transformers, relays are used to switch analog transformer ratio errors and polarity errors; digital DA is used to apply continuous differential pressure and differential current to change transformer errors, Realize the simulation training of transformer verification, reduce the high voltage level of field equipment, and prevent the occurrence of safety accidents.

The beneficial effect brought by the technical solution provided by the present invention is: the voltage and current transformer load box, the transformer calibrator, the voltage regulation control box, the current booster and the test transformer are integrated into a hollow structure cabinet, and the The standard transformer mounting plate and the tested transformer mounting plate are added on the table of the cabinet body, the wiring is very convenient, and the space occupied is small; at the same time, the transformer is connected through the transformer terminal, and the operation is simple and convenient; and, adding The alarm is installed to ensure that accidents can be detected as soon as possible; finally, the simulation training of transformer verification is realized through differential pressure and differential current control circuits, which reduces the high voltage level of field equipment and prevents safety accidents.

The invention has the characteristics of simple structure, convenient operation and safe use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of cabinet;

Figure 3 is a schematic diagram of the differential pressure and differential current control circuit.

In the figure, voltage and current transformer load box 11, transformer calibrator 12, voltage regulation control box 13, current booster 14, test transformer 15, cabinet body 2, standard transformer mounting surface 3, precision voltage transformer mounting plate 31. Precision current transformer mounting plate 32, tested transformer mounting surface 4, tested voltage transformer mounting plate 41, tested current transformer mounting plate 42, transformer terminal 5, main power terminal 6, grounding connection Column 7, power switch 8, alarm 9.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, a kind of transformer verification simulation training combination platform provided by the present invention includes: voltage and current transformer load box 11, transformer calibrator 12, voltage regulation control box 13, current booster 14, test The transformer 15 and the cabinet 2 with a hollow structure inside, the voltage and current transformer load box 11, the transformer calibrator 12, the voltage regulation control box 13, the current booster 14 and the test transformer 15 are arranged in the cabinet 2, The operating panels of the voltage and current transformer load box 11, transformer calibrator 12, voltage regulation control box 13, current booster 14 and test transformer 15 are arranged on the table top of the cabinet body 2, and the cabinet body 2 A standard transformer installation surface 3 and a tested transformer installation surface 4 are also provided on the table, and the standard transformer installation surface 3 and the tested transformer installation surface 4 are provided with transformer terminals 5 for connecting transformers , the transformer terminal 5 is correspondingly connected with the equipment in the cabinet 2 to form a transformer verification circuit (see FIG. 2 ).

As shown in Figure 2, the quantity of said standard transformer mounting surface 3 is at least one, and the quantity of said tested transformer mounting surface 4 is at least one, the standard transformer mounting surface and the tested transformer mounting surface The quantity is designed according to the actual simulation training needs. There are two standard transformer mounting surfaces 3, and each standard transformer mounting surface 3 is respectively provided with a precision transformer mounting plate, and the transformer terminal 5 is arranged on the precision transformer mounting plate. The number of transformer mounting plates is designed according to the actual simulation training needs. The tested transformer mounting surface 4 is two, and each tested transformer mounting surface 4 is respectively provided with at least one tested transformer mounting plate, and the transformer terminal 5 is arranged on the tested transformer installation surface. On the board, the number of the tested transformer mounting boards is designed according to the actual simulation training needs. The precision transformer mounting plate is a precision voltage transformer mounting plate 31 or/and a precision current transformer mounting plate 32, and the type of the precision transformer mounting plate is designed according to actual simulation training needs. The tested transformer mounting plate is the tested voltage transformer mounting plate 41 or/and the tested current transformer mounting plate 42, and the type of the tested transformer mounting plate is designed according to the actual simulation training needs. In actual use, multiple main line terminals (such as K1, K2, K3, K4) can be set on the precision current transformer mounting plate 32 and the tested current transformer mounting plate 42 to provide different sizes for the current transformers. current to meet the needs of simulation training (see Figure 1).

As shown in Figure 2, the table of the cabinet body 2 is also provided with a total power terminal 6 and a grounding terminal 7, the total power terminal 6 and the grounding terminal 7 are connected to the transformer verification circuit, for This unit provides power. A power switch 8 is also arranged on the table of the cabinet body 2, and the power switch 8 is connected to the testing circuit of the transformer. An alarm 9 is also arranged on the table of the cabinet body 2, and the alarm 9 is connected to the testing circuit of the transformer to play a warning function, so that it can be found as early as possible in case of an accident.

As shown in Figure 3, the transformer testing circuit shown includes differential pressure and differential current control circuits, and the differential pressure and differential current control circuits include: signal acquisition, range conversion circuit, U/I conversion circuit, filter circuit, Phase circuit (in-phase and quadrature transformation of the signal), D/A conversion, power amplifier, adder. The standard voltage, current transformer secondary side voltage, and current signals are directly connected to the input terminal of the D/A conversion circuit after signal acquisition, range conversion, and filter circuit, and the other is connected to the D/A after the quadrature phase-shifting circuit. The input end of the conversion circuit and the output end of the two-way D/A conversion are connected to the input end of the adder after passing through the power amplifier circuit, and the output end of the adder outputs preset differential pressure and differential current. In this way, based on precision voltage transformers or/and precision current transformers, relays are used to switch analog transformer ratio errors and polarity errors; digital DA is used to apply continuous differential pressure and differential current to change transformer errors, Realize the simulation training of transformer verification, reduce the high voltage level of field equipment, and prevent the occurrence of safety accidents.

The present invention integrates the voltage and current transformer load box 11, the transformer calibrator 12, the voltage regulation control box 13, the current booster 14 and the test transformer 15 into a cabinet body 2 with a hollow structure, and in the cabinet body 2 A standard transformer mounting plate and a tested transformer mounting plate are added on the table, and the wiring is very convenient and takes up less space; meanwhile, the transformer is connected through the transformer terminal 5, and the operation is simple and convenient; moreover, the additional The alarm 9 ensures that once an accident occurs, it can be detected as soon as possible; finally, the simulation training of the transformer verification is realized through the differential pressure and differential current control circuit, which reduces the high voltage level of the field equipment and prevents the occurrence of safety accidents. The structure is simple, the operation is convenient and the use is safe.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (1)

1. a combined table for simulated training of verification of transformer, comprise: voltage current transformer load box, mutual-inductor tester, Regulation Control case, current lifting device, testing transformer and inside are the cabinet of hollow structure, it is characterized in that, described voltage current transformer load box, mutual-inductor tester, Regulation Control case, current lifting device and testing transformer are arranged in cabinet, described voltage current transformer load box, mutual-inductor tester, Regulation Control case, the guidance panel of current lifting device and testing transformer is arranged on the table top of described cabinet, on the table top of described cabinet, be also provided with standard mutual inductor installed surface and tested mutual inductor installed surface, described standard mutual inductor installed surface with on tested mutual inductor installed surface, be provided with for being connected the mutual inductor interstar connection post of mutual inductor, described mutual inductor interstar connection post and the corresponding ct calibrating circuit that is connected to form of equipment in described cabinet, described standard mutual inductor installed surface is two, is respectively arranged with a precision transformer installing plate on each standard mutual inductor installed surface, and described mutual inductor interstar connection post is arranged on this precision transformer installing plate, described tested mutual inductor installed surface is two, is respectively arranged with at least one tested mutual inductor installing plate on each tested mutual inductor installed surface, and described mutual inductor interstar connection post is arranged on this tested mutual inductor installing plate, described precision transformer installing plate is that accurate voltage mutual inductor installing plate is or/and precision current transformer installing plate, described tested mutual inductor installing plate is that tested voltage transformer (VT) installing plate is or/and tested current transformer installing plate, on the table top of described cabinet, be also provided with general supply binding post and ground connection binding post, on the table top of described cabinet, being also provided with power supply sky opens, on the table top of described cabinet, be also provided with alarm, described ct calibrating circuit comprises differential pressure, poor flow control circuit, described differential pressure, poor flow control circuit comprises: signals collecting, range change-over circuit, U/I change-over circuit, filtering circuit, phase-shift circuit, D/A conversion, power amplifier, totalizer, normal voltage, Current Transformer Secondary side voltage, current signal is through signals collecting, range conversion, filtering circuit Hou Yi directly receives on road the input end of D/A change-over circuit, the input end of D/A change-over circuit is received on another road after quadrature phase-shift circuit, the output terminal of two-way D/A conversion is received the input end of totalizer after power amplifier, the output terminal of totalizer is exported default differential pressure, poor stream.

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