Lightning arrester state diagnosis system based on online detection of impact action and leakage current

Abstract

The invention discloses a lightning arrester state diagnosis system based on online detection of impact action and leakage current. Aiming to realize real-time monitoring to leakage current and lightning action characteristics of power line lightning arresters, the lightning arrester state diagnosis system evaluates running states of the lightning arresters on the basis of the real-time monitoring to leakage current and lightning action current of the power line lightning arresters, and analyzes correct actions, error actions and rejecting actions of the power line lightning arresters according to monitored data of the action current of the lightning arresters and data such as lightning current amplitude value of a lightning positioning system so as to realize online monitoring of running states and actions of the power line lightning arresters. The lightning arrester state diagnosis system is only powered by solar energy without extra power supply, capable of running 24 hours continuously, and capable of recording leakage current, small current, impact current, impact frequency, impact current peak, internal temperature and humidity of the lightning arresters and the like in real time to reflect the running states of the lightning arresters comprehensively. Data collected by the lighting arrester diagnosis system can be fed back to a system server to bring convenience for inspection staff to judge the running states of the lightning arresters accurately.

Description

[0001] technical field [0002] The invention belongs to the field of lightning protection equipment and relates to an online detection system for the state of a lightning arrester, in particular to a diagnosis system for online detection of the surge action and leakage current of the lightning arrester and then judging the state of the lightning arrester. [0003] Background technique [0004] At present, the power bureaus in various regions at home and abroad are promoting the use of metal oxide arresters on transmission lines to improve the lightning resistance level of transmission lines and reduce the lightning tripping rate of lines, thereby improving the reliability of power supply and meeting the requirements of industrial electricity consumption; therefore, line arresters have Wide development and application prospects. [0005] The important position of the arrester in the power system requires guaranteeing the normal operation of the arrester, which requires moni...

AI Technical Summary

Problems solved by technology

[0007] The relevant research status at home and abroad is still based on the monitoring of leakage current, but the transmission line arrester is divided into non-gap arrester and out-of-band series gap arrester. For the arrester with pure air gap, there is no leakage current in normal operation, so it cannot Evaluate the condition of the arrester by measuring the leakage current

Moreover, the conditions of the transmission line are complicated, and it is difficult to carry out preventive tests and live tests

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