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Direct-current transmission converter valve lightning arrester monitoring device and method

A monitoring device and DC transmission technology, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problem that the monitoring device is susceptible to electromagnetic interference, and achieve the effect of avoiding high cost and avoiding instrument burnout

Active Publication Date: 2015-01-21
XJ ELECTRIC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a monitoring device and monitoring method for a DC transmission converter valve arrester to solve the problem that the existing monitoring device is susceptible to electromagnetic interference

Method used

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  • Direct-current transmission converter valve lightning arrester monitoring device and method
  • Direct-current transmission converter valve lightning arrester monitoring device and method

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] A DC transmission converter valve arrester monitoring device, including a monitoring circuit for detecting the current of the arrester, at least a pair of flat-plate electrodes with an air gap are arranged in series in the monitoring circuit, and the arrester action is monitored by detecting the breakdown of the flat-plate electrodes. no.

[0022] A method for monitoring the arrester of the DC transmission converter valve based on the above-mentioned arrester monitoring device for the converter valve of the DC power transmission, monitors whether the arrester operates by detecting the phenomenon when the plate electrode is broken down; when the arrester operates, the plate electrode is broken down, and when When the arrester does not operate, the plate electrode will not be broken down.

[0023] Based on the above technical solutions and in conjunctio...

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Abstract

The invention relates to a direct-current transmission converter valve lightning arrester monitoring device and method. The direct-current transmission converter valve lightning arrester monitoring device comprises a monitoring loop installed between the end of a lightning arrester and a shielding ring, the monitoring loop is used for detecting the current of the lightning arrester, at least one pair of plate electrodes with air gaps are arranged in the monitoring loop in a series mode, and the action condition of the lightning arrester is monitored by detecting whether the plate electrodes break down or not. The direct-current transmission converter valve lightning arrester monitoring method comprises the step that whether the lightning arrester acts or not is detected by detecting the breakdown phenomenon of the plate electrodes. Due to the fact that the lightning arrester of a converter valve is installed in a valve hall of the converter valve, the voltage on the lightning arrester is quite high, the electromagnetic environment of the lightning arrester is quite complex, and electromagnetic interference is serious. The monitoring loop is not provided with any electronic part and installed between the end of the lightning arrester and the shielding ring, and thus the interference-resisting capability of the monitoring device is greatly improved.

Description

technical field [0001] The invention relates to a monitoring device and a monitoring method for a DC transmission converter valve lightning arrester, belonging to the technical field of power equipment monitoring. Background technique [0002] In recent years, high-voltage direct current transmission has achieved rapid development. The converter valve is the core equipment in the high-voltage direct current transmission project, and it plays a vital role in the safe and stable operation of direct current transmission. And because the converter valve is very expensive, therefore, parallel surge arresters are required at both ends of the converter valve for protection in the project. In order to enable the staff of the converter station to know the operation status of the converter valve arrester in time, it is necessary to monitor the status of the arrester. [0003] There are many monitoring methods. At present, it is more common to install a device composed of electronic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 张建范彩云黄永瑞刘堃李旭升张志刚
Owner XJ ELECTRIC
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