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DC test method and test platform for arrester based on voltage compensation

A DC test and voltage compensation technology, which is applied in the direction of instruments, measuring electricity, and measuring electrical variables, etc., can solve problems such as error-prone and complicated fabrication, and achieve the effects of saving man-hours, facilitating tests, and shortening test time

Active Publication Date: 2016-03-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem solved by the present invention is to overcome the traditional method of carrying out the DC test of the lightning arrester in the lower section without removing the lead wires.

Method used

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  • DC test method and test platform for arrester based on voltage compensation
  • DC test method and test platform for arrester based on voltage compensation
  • DC test method and test platform for arrester based on voltage compensation

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] The voltage-compensated 220kV and above surge arrester DC test method of the present invention shortens the DC test time of 220kV and above surge arresters, improves work efficiency and can carry out the DC test of two-section surge arresters without removing the lead wires after one pressurization, compared with the traditional surge arrester without removing the lead wires. The DC test method saves 50% or more man-hours and improves work efficiency. The specific implementation process, such as figure 2 shown, including the following steps,

[0034] Step (a) Connect the test platform for the DC test of the arrester

[0035] At the flange between the upper and lower arresters, connect the first microammeter to apply negative DC high voltage through the negative DC high voltage transmitter; connect the end of the arrester to the second microammeter, and the sec...

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PUM

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Abstract

The invention discloses a lightning conductor direct current test method and test platform based on voltage compensation. Direct current test time of 220 kV and over 220kV lightning conductors is shortened and a direct current test of two sections of the lightning conductors can be conducted through pressure exerting for one time without removal of leads. Compared with a traditional direct current test method without removal of leads, the lightning conductor direct current test method can save 50% or more work hours and improve work efficiency. A direct current high voltage generator with adjustable polarity and suitable for lightning conductor direct current test platform erection is developed, so that positive and negative polar direct current high voltage is output, a test is conducted conveniently, and application prospects are good.

Description

technical field [0001] The invention relates to the technical field of lightning arrester parameter testing, in particular to a DC test method for lightning arresters of 220 kV and above without removing lead wires based on voltage compensation. Background technique [0002] The DC test of 220kV and above surge arresters is mainly to check whether the valve plate of the arrester is damp, and to determine whether its operating performance meets the requirements. As shown in Table 1 below, the following items need to be tested, [0003] [0004] In view of the above-mentioned 220kV and above surge arrester handover test items and requirements, the traditional method of conducting the DC test of the next surge arrester without removing the lead wires is as follows: figure 1 As shown, for a two-section 220kV arrester, apply a negative DC high voltage through the microammeter 1 through the DC high-voltage transmitter at the flange between the upper and lower arresters, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 甘强吉亚民包玉树陈轩
Owner STATE GRID CORP OF CHINA
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