Circuit breaker vibration monitor system and method based on optical fiber sensors

Abstract

The invention discloses a circuit breaker vibration monitor system based on optical fiber sensors. The circuit breaker vibration monitor system based on the optical fiber sensors comprises a plurality of optical fiber grating vibration sensors installed on a circuit breaker and a switching value detection module installed on an output contactor of the circuit breaker, wherein the optical fiber grating vibration sensors are sequentially connected with an optical fiber grating demodulation instrument, a signal conditioning module and an A / D (analog to digital) conversion module, the A / D conversion module and the switching value detection module are respectively connected with isolation unit modules, and the isolation unit modules are sequentially connected with a digital signal processor and an upper computer. The invention further discloses a monitor method of the circuit breaker vibration monitor system based on the optical fiber sensors. The monitor method of the circuit breaker vibration monitor system based on the optical fiber sensors includes steps: installing the optical fiber grating vibration sensors on multiple positions of the circuit breaker, collecting vibration signals of the circuit breaker, then processing the signals, transmitting the signals to the upper computer, and thereby confirming the optimum installation positions of the optical fiber grating vibration sensors and achieving machinery status monitoring for the circuit breaker. The circuit breaker vibration monitor system and the circuit breaker vibration monitor method based on the optical fiber sensors achieve real time vibration monitoring for the circuit breaker in running.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring methods for power equipment, and relates to a circuit breaker vibration monitoring system based on an optical fiber sensor. The invention also relates to a monitoring method of the circuit breaker vibration monitoring system. Background technique [0002] The circuit breaker is an important device in the power system, and its mechanical failure will pose a great threat to the operation of the system and cause serious economic losses. In order to ensure the safe operation of the circuit breaker and improve the reliability of the power system operation, it is necessary to strengthen its vibration monitoring. [0003] With the maturity of computer technology, sensor technology, field bus technology and artificial intelligence, it has become possible to monitor the vibration of circuit breakers. The vibration signal of the circuit breaker contains a wealth of mechanical state information. ...

AI Technical Summary

Problems solved by technology

Although the vibration of the circuit breaker phase can be monitored in real time, the sensor has poor anti-interference ability and the accumulation of integral errors. The actual measurement error is relatively large, and only the vibration signal of one position is monitored, which cannot explain the mechanical state of the circuit breaker.

Images