Breaker on-line monitoring system

Abstract

A breaker on-line monitoring system belongs to the field of monitoring equipment. The breaker on-line monitoring system is characterized by comprising a signal conditioning circuit, an isolation amplification circuit, a power supply module, an application circuit, a controller and a control host; and acquisition for real-time data can be rapidly achieved, conversion, filtering, amplification, storage and analyses can be performed on a current signal of an opening and closing coil, opening and closing time, opening and closing speeds, a switch stroke, opening and closing strokes, an overshoot distance and other parameters can be computed, and a basic judgment can be performed on an action type of a high-voltage breaker. Experiments and actual operation show that the system has the advantages of good real-time performance, comprehensive monitoring data, high operability, the high anti-interference capability and the like, and the system has great popularization value.

Description

technical field [0001] The invention belongs to the field of monitoring equipment, in particular to an on-line monitoring system for a circuit breaker. Background technique [0002] With the continuous increase of power system capacity and energy demand, the safe operation of power equipment is becoming more and more important. High-voltage circuit breakers are the most important switching devices in power systems. They can reliably switch on or off corresponding lines or electrical equipment according to the needs of power grid operation, and can play a role in control and protection in the power grid. When a fault occurs, the faulty line or electrical equipment can be quickly removed from the grid in time. If the high-voltage circuit breaker cannot break the line in time and eliminate the fault, the accident will expand and cause serious consequences. Therefore, the reliability and performance of high-voltage circuit breakers are important factors that determine the safe ...

AI Technical Summary

Problems solved by technology

According to various materials and literature reports, the current online monitoring technology of high-voltage circuit breakers still has the following outstanding problems: the sensor selected for online monitoring is not accurate enough, and the diagnostic accuracy is not high; the storage and processing of data are not systematic and lack scientific methods. Management, it is impossible to make a reasonable judgment on the fault based on the operating history of the circuit breaker; the life of the online monitoring device module is too short, the installation and maintenance are difficult, the price is too high and the accuracy is not high enough

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