Sensing technology based online open-type lightning arrester monitoring device and monitoring method

Abstract

The invention relates to a sensing technology based online open-type lightning arrester monitoring device and a monitoring method. The device comprises an open-type current transformer, a mounting bracket and a monitoring host; the open-type current transformer and the mounting host are mounted at two ends of the mounting bracket respectively; the open-type current transformer sleeves a lightning arrester and is in communication connection with the monitoring host; the open-type current transformer acquires total-current information on the lightning arrester in real time and transmits the total-current information to the monitoring host in real time; the monitoring host analyzes the total-current information to obtain a resistive current peak value, compares the resistive current peak value to a set threshold, and gives an alarm if the resistive current peak value exceeds the threshold. Compared with the prior art, the monitoring device and the monitoring method have the advantages that real-time online monitoring of the lightning arrester is realized effectively, and the electric mounting problem troubling the online lightning arrester monitoring device is solved really and effectively.

Description

technical field [0001] The invention relates to a monitoring device for a lightning arrester, in particular to an on-line monitoring device and a monitoring method for an open lightning arrester based on sensing technology. Background technique [0002] As the necessary electrical equipment in the substation, the lightning arrester has almost no replacement for its wide application, and it has become one of the main electrical equipment of the electrical substation. Safe operation plays a big protective role. The quality or performance attenuation of the arrester itself directly affects the safety and reliability of the protected equipment. If the arrester is damp for a long time or the valve plate is aging, the resistive current will increase, and the resistive power will be too large. It will generate heat, and the continuous heat will destroy the Or damage the arrester. In order to know in real time whether the arrester is working normally and its damage tendency, speci...

AI Technical Summary

Problems solved by technology

At present, there are many similar products with different technical routes. Most of them analyze their total power, capacitive power, and resistive current through the method of bus voltage reference value to judge their working status in real time. The main problem is: really cause heat The resistive current calculation is not accurate, and the installation of the device must be powered off (high-grade substations have very limited power outages every year)

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