High-voltage circuit breaker mechanical state online monitoring and fault identification device

Abstract

The invention discloses a high-voltage circuit breaker mechanical state online monitoring and fault identification device. The high-voltage circuit breaker mechanical state online monitoring and faultidentification device comprises an image sensor, a hall current sensor, a sound sensor, a vibration acceleration sensor, an acquisition card, an intelligent industrial control monitor and an acousto-optic alarm module; the mechanical parameters of the operating mechanism of the high-voltage circuit breaker in the operation process are synchronously monitored through the four sensors, and then theintelligent industrial control monitor is used for analyzing and processing so as to judge the health grade required by the mechanical state in the operation process of the operation mechanism; the device can achieve rapid analysis of the energy impact, the component movement and the driving state of the operation mechanism in the operation of the circuit breaker, the overall mechanical performance and the running state of the operating mechanism can be judged, and more importantly, the device has no influence on normal operation of the circuit breaker; and the device can be used for solvingthe problem the fault of the high-voltage circuit breaker is difficult to judge only by means of perceptual understanding and experience in the periodic inspection by an operator, so that efficiency is improved, and manpower and material resources are saved.

Description

technical field [0001] The invention belongs to, and in particular relates to an on-line monitoring and fault identification device for the mechanical state of a high-voltage circuit breaker. Background technique [0002] With the continuous improvement of the operating voltage level of the power system, the capacity and number of high-voltage circuit breakers as the main protection and control components are also increasing, and it is very important to judge the reliability of their actions. According to the statistics of professional institutions at home and abroad, most of the defects of high-voltage circuit breakers are concentrated in the operating mechanism. [0003] At present, the research on condition monitoring and diagnosis of circuit breakers is still in the development stage. The existing real-time condition monitoring methods are mainly aimed at a certain aspect of electrical or mechanical characteristics, and have a single function. Most methods are limited to...

AI Technical Summary

Problems solved by technology

Especially for different high-voltage circuit breakers, it is necessary to equip different mounting brackets. Not only must the moving parts and stationary parts cooperate well, but the mechanical characteristic parameters can be accurately measured by keeping the pull rod of the sensor and the movement of the switch moving contact parallel and synchronous. On-site installation and disassembly are very difficult, especially when the circuit breaker is running live

This technology is also not suitable for on-line monitoring of the real-time status of the high-voltage circuit breaker operating process. In addition, the existing high-voltage circuit breaker mechanical characteristic tester can only give whether the mechanical characteristic parameters are within the qualified range, and does not have a circuit breaker Ability to comprehensively evaluate machinery status online

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