Automatic testing apparatus of SVG power module

An automatic test device and power module technology, applied in the direction of measuring device, using electrical device, measuring electricity, etc., to achieve the effect of improving test quality, avoiding the omission of test items, and saving test time

Active Publication Date: 2017-04-26
XJ ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic test device for SVG power modules to solve the problem that each test needs to build a corresponding test circuit

Method used

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  • Automatic testing apparatus of SVG power module
  • Automatic testing apparatus of SVG power module
  • Automatic testing apparatus of SVG power module

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Experimental program
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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the power module automatic test device of the chain-type high-voltage static var generator SVG includes a main control unit, a high-voltage adjustable DC power supply, a power module waveform detection unit and a monitoring background.

[0024] Such as figure 2 As shown, the main control unit is the core part of the automatic test device, which is used to control the realization process of each test function. A high-voltage adjustable DC power supply (referred to as an adjustable DC power supply) is used to output a required DC voltage, and the output DC voltage can be adjusted. The power module waveform detection unit is used to detect the waveform generated by switching devices (IGBT is taken as an example in this embodiment) in the power module. The monitoring background is used to issue control instructions to the mai...

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Abstract

The invention relates to an automatic testing apparatus of an SVG power module. The automatic testing apparatus comprising a monitoring background, a main control unit, an adjustable direct-current power supply, and a power module waveform detection unit is capable of carrying out at least two of the following tests: a communication test, a power module pre-checking test, a module input value precision test, a bus over-voltage protection test, a temperature protection test, and a waveform test. The main control unit executes a corresponding instruction, receives a corresponding signal fed back by a tested power module, carries out comparison with a corresponding set value, and determines whether the corresponding function of the power module meets the standard; and when a condition for a next test is met, a next test is carried out automatically. With the automatic testing apparatus, several kinds of tests can be realized; building of different test circuits can be avoided; and the test complexity can be reduced. Moreover, the test precision can be improved; and the investment cost can be lowered.

Description

technical field [0001] The invention relates to an automatic testing device of an SVG power module. Background technique [0002] With the rapid development of renewable and clean energy industries such as wind power and photovoltaics, the stability of power grid operation and the quality of the power grid are becoming more and more important. The chain-type high-voltage static var generator (SVG for short) is currently the best in the field of reactive power control. According to the scheme, the power cabinet of the core part of SVG is mainly composed of power module units, and the power module units adopt the H-bridge topology; SVG also includes an SCE board for corresponding control of the power module units. [0003] Taking the 35kV substation as an example, the static var generator equipped with each phase includes 42 power modules, a total of 126 power modules. Usually, a large-scale substation, photovoltaic, and wind farm project needs to be equipped with multiple se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R19/165G01K7/22G01D21/02H04B17/00
CPCG01D21/02G01K7/22G01R19/16576G01R31/00H04B17/00
Inventor 白金刚龚晓伟张学成王春生屈路军焦照旭刘道欣金志豪孔彦召
Owner XJ ELECTRIC
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