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Transformation ratio measuring device and measuring method for cascade test transformation equipment

A technology of transformer equipment and measuring device, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of shortened service life of terminals, high measuring cost, low measuring efficiency, etc., to improve reliability, improve efficiency, Cost saving effect

Active Publication Date: 2018-11-27
CHENGDU UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a test transformer ratio measurement device, aiming at solving the problem of high measurement cost, low measurement efficiency, and measurement problems caused by test transformer manufacturing enterprises. Problems such as reduced service life of terminal blocks

Method used

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  • Transformation ratio measuring device and measuring method for cascade test transformation equipment
  • Transformation ratio measuring device and measuring method for cascade test transformation equipment
  • Transformation ratio measuring device and measuring method for cascade test transformation equipment

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Embodiment 1

[0061] Since the cascade test transformer equipment 70 is generally a 2-section test transformer cascade, or a 3-section test transformer cascade, and a 3-section cascade test transformer needs to test up to 12 sets of transformation ratio data during the test, which requires repeated up and down Unwiring and wiring greatly increase the cost of measurement, and it is easy to cause wrong data due to wrong wiring, which greatly reduces the service life of the terminals on the transformer.

[0062] In this embodiment, the cascade test transformer equipment 70 to be measured includes a first-section transformer 71 , a second-section transformer 72 and a third-section transformer 73 .

[0063] There are three groups of the first electronic switch assembly 21 , which are switch assembly 1 connected to the first transformer 71 , switch assembly 2 connected to the second transformer 72 , and switch assembly 3 connected to the third transformer 73 .

[0064] The second electronic switc...

Embodiment 2

[0087] The implementation principle and technical effect of the device provided by the embodiment of the present invention are the same as those of Embodiment 1. For a brief description, reference may be made to the corresponding content in Embodiment 1 for the parts not mentioned in this embodiment.

[0088] The transformation ratio measurement device of this embodiment is used to measure the three-section cascade test transformer equipment 70. The control mechanism 10 of the transformation ratio measurement device has twelve control buttons corresponding to the transformation ratios of different windings.

[0089] Firstly, the transformation ratio measurement device as described above is correspondingly connected to the three-node cascade test transformation equipment 70 .

[0090]Wherein, it is defined in the high-voltage winding 76 that the connection terminal with higher voltage is the first pole terminal, and the connection terminal with lower voltage is the second pole c...

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Abstract

The invention provides a transformation ratio measuring device and a measuring method for cascade test transformation equipment. The cascade test transformation equipment comprises a plurality of sections of test transformers; each section of test transformer is provided with a low-voltage winding, a high-voltage winding and a measuring winding respectively; the transformation ratio measuring device comprises an input power line, an output power line, a transformation ratio measurer, a switching mechanism and a control mechanism; the transformation ratio measurer is used for testing the voltage transformation ratio between the input power line and the output power line; and the control mechanism is used for controlling the switching mechanism. The device of the invention enables the cascade test transformer to be convenient and quick in a factory-leaving transformation ratio checking test, wiring does not need to be changed frequently, and the transformation ratio measuring efficiencyand the accuracy are improved.

Description

technical field [0001] The invention belongs to the field of electric power measuring equipment, and in particular relates to a transformation ratio measuring device and a measuring method of cascaded test transformer equipment. Background technique [0002] In the manufacturing enterprises of test transformers, the transformation ratio measurement must be carried out before the products leave the factory. On the one hand: to test the reliability of the parameters of the transformer; on the other hand: to provide a basis for the design and optimization of the transformer. Especially suitable for transformer manufacturing enterprises. [0003] Among them, most of the cascaded test transformers are connected by multiple transformer windings, that is, they are connected as multi-section transformers from the surface. Due to the cascade type, generally 2-3 stages, the transformation ratio of the transformer in cascade is not equal to the sum of the transformation ratios of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 陈天翔吴河鑫赵晶陈达进王文勇
Owner CHENGDU UNIVERSITY OF TECHNOLOGY