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Current transformer detection method and system

A detection method and detection system technology, which can be applied to instruments, measuring electricity, measuring devices, etc., and can solve problems such as component damage

Active Publication Date: 2010-05-12
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the appearance, wiring inspection, withstand voltage test, and low-voltage control circuit power-on inspection cannot completely eliminate the possible problems of the converter, there is a certain risk in directly connecting the high-voltage power supply for inspection, which may cause damage to components

Method used

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  • Current transformer detection method and system
  • Current transformer detection method and system
  • Current transformer detection method and system

Examples

Experimental program
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Embodiment Construction

[0050] The invention provides a converter detection method, which can find hidden troubles as much as possible before connecting a high-voltage power supply, and reduces the risk of high-voltage detection.

[0051] In order to more clearly illustrate the detection method of the current transformer of the present invention, it will be described in detail below in conjunction with specific drawings.

[0052] see figure 1 , which is a flow chart of the first embodiment of the current transformer testing method of the present invention.

[0053] The detection method of the converter described in the first embodiment of the present invention includes the following steps:

[0054] S100. Connect the converter to the adjustable power supply.

[0055] The measured converter is connected with an adjustable power supply, and the converter is powered by the adjustable power supply.

[0056] S200. Preset the reduction ratio of the proportional relationship among the rated input voltage,...

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Abstract

The invention relates to a convertor detecting method, including the following steps: the convertor is connected with an adjustable power supply; a rated input voltage, current and a reduced proportion of the proportion relation between control parameters are preset in the convertor; the adjustable power supply is adjusted to lead an actual input voltage of the convertor to be the multiple of thereduced proportion of the rated input voltage; the actual input voltage, current and control parameters are magnified according to the reciprocal multiple of the reduced proportion to control the convertor; the working state of internal parts of the convertor is detected. The invention provides the convertor detecting method and a system to find hidden troubles resulting in failure as much as possible before accessing a high voltage power supply so as to reduce the risk of detection under high voltage.

Description

technical field [0001] The invention relates to a detection method for a converter, in particular to a detection method and system for a converter line. Background technique [0002] After the converter is assembled, a series of inspections are required. Carry out a comprehensive assessment of the working performance of the converter. At present, the general inverter factory inspection process is: appearance inspection, wiring inspection, withstand voltage test, low-voltage control circuit power-on inspection, and inverter function test. [0003] Among them, the withstand voltage test is to test the electrical safety performance of the converter in the actual working state, and is one of the important indicators to test the electrical safety performance of the converter equipment. [0004] When carrying out the withstand voltage test of the converter, it is necessary to apply a voltage higher than the normal working voltage to the insulator of the device under test, that i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/02
Inventor 刘长清黄长强张宁吴强蹇芳
Owner CHINA RAILWAYS CORPORATION
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