Remote online monitoring system for leakage current of lightning arrester

Abstract

The invention provides a remote online monitoring system for a leakage current of a lightning arrester. The remote online monitoring system comprises a Hall sensor for monitoring a leakage current ofa lightning arrester, an I-V conversion circuit connected to the output terminal of the Hall sensor, an analog-to-digital conversion circuit connected with the output terminal of the I-V conversion circuit, and a central processing circuit connected to the output terminal of the analog-to-digital conversion circuit. The central processing circuit is in communication connection with a monitoring center through a wireless transmission module. Therefore, the leakage current of the lightning arrester can be monitored in real time and the monitoring data can be fed back to the monitoring center inreal time, so that a fault of the lightning arrester is discovered timely and processing measures are taken timely and accurately. Moreover, the manpower investment is reduced effectively; any monitoring data error caused by a human factor is avoided; the accuracy and objectivity of the data can be ensured; and the system can continue to work stably.

Description

technical field [0001] The invention relates to a monitoring system, in particular to a remote on-line monitoring system for leakage current of a lightning arrester. Background technique [0002] The arrester is an extremely important device in the power transformation system. The leakage current of the arrester is an important parameter reflecting the performance status of the arrester. In the prior art, the leakage current of the arrester is monitored manually. To record the number of actions and leakage current values ​​of the online monitor (discharge counter) one by one, the workload is heavy and the task is heavy. As the number of substations continues to increase, the disadvantages of the traditional manual recording method are more obvious. First, it is greatly affected by human factors, and due to insufficient responsibility and carelessness of inspectors, it causes mistakes and omissions; second, it is due to a lot of time spent on manual In terms of records, the ...

AI Technical Summary

Problems solved by technology

[0002] The arrester is an extremely important device in the power transformation system. The leakage current of the arrester is an important parameter reflecting the performance status of the arrester. In the prior art, the leakage current of the arrester is monitored manually. Recording the number of actions and leakage current values ​​of the online monitor (discharge counter) one by one, the workload is heavy and the task is heavy

As the number of substations continues to increase, the disadvantages of the traditional manual recording method are more obvious. First, it is greatly affected by human factors, and due to insufficient responsibility and carelessness of inspectors, it causes mistakes and omissions; second, it is due to a lot of time spent on manual In terms of records, the equipment inspection time of operation and maintenance personnel is shortened, which affects the inspection quality; third, it is impossible to realize real-time monitoring of the operation status of the arrester, and it is impossible to detect and deal with the fault of the arrester in time

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