Online monitoring device for lightning arrester

Abstract

The invention discloses an online monitoring device for a lightning arrester. The online monitoring device comprises a voltage signal collecting module, a current signal collecting module, a signal conditioning module and a microprocessor. The output ends of the voltage signal collecting module and the current signal collecting module are connected to the input end of the signal conditioning module. The input end of the microprocessor is connected with an isolation conversion module and a functional key. The output end of the microprocessor is connected with an alarm module, a display module and a storage module. The output end of the signal conditioning module is connected to the isolation conversion module. Due to the arrangement of the voltage signal collecting module and the current signal collecting module, online detection of a lightning arrester is achieved; collected signals are processed to be monitoring data and stored through the microprocessor, and injury is convenient; alarm prompts are performed through the alarm module, and the efficiency for finding and removing faults is improved; monitored data are displayed in real time through the display module, and the efficiency of investigating faults is improved; remote monitoring is achieved through the upper computer, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the field of electrical technology, and in particular relates to an online monitoring device for a lightning arrester. Background technique [0002] With the comprehensive development of power transmission and transformation equipment condition evaluation and condition maintenance work in the power system, and the current smart grid construction work, it is an imminent task to carry out online monitoring of power transmission and transformation primary equipment. [0003] Surge arrester is a kind of power transmission and transformation primary equipment widely used in power system, and it is an important overvoltage protection device in power system. Since the arrester has good non-linear resistance characteristics, there is no gap inside the arrester. It is precisely because there is no gap that the valve plate is subjected to the operating voltage of the power system for a long time during normal operation, and the influenc...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of on-line monitoring device for lightning arrester, by collecting signals such as overvoltage and discharge current in the circuit where the lightning arrester is located, analyze and judge by the microprocessor, prompt alarm in time, facilitate real-time monitoring and query fault points, The remote monitoring is realized through the upper computer, which solves the problem that the existing arrester has many hidden dangers and is inconvenient to monitor.

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