Circuit breaker opening and closing operation position state on-line monitoring device and method

Abstract

The invention discloses a circuit breaker opening and closing operation position state on-line monitoring device which comprises a circuit breaker body. The circuit breaker body comprises a gas box, the back face of the gas box is communicated with a body mechanism box, a connecting rod is arranged in an inner cavity of the body mechanism box, and an operating rod is arranged in an inner cavity of the gas box. One end of the connecting rod slidably penetrates through the body mechanism box and the air box and is in transmission connection with one end of the operating rod, an indication board is fixedly installed on the surface of the operating rod, a cover plate is fixedly installed on the front face of the air box, and a sensor is fixedly installed on the front face of the cover plate; on-line monitoring is carried out on the opening and closing positions of the circuit breaker through the sensor device, the action condition of the circuit breaker is known in time, the sensor detects the rotation angle or stroke of the circuit breaker during opening and closing operation so as to judge whether the circuit breaker is opened and closed in place or not, the change trend of mechanical characteristics of the circuit breaker is mastered, and scientific maintenance and management are achieved.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring equipment for electric power equipment, in particular to an on-line monitoring device for the opening and closing operation position status of a circuit breaker. Background technique [0002] The high voltage circuit breaker is the most important control and protection equipment in the power system, no matter what state the power line is in, such as no-load, load or short-circuit fault, the high-voltage circuit breaker can not only cut off or close the no-load current and load current in the high-voltage circuit , and when the system fails, through the function of the relay protection device, the overload current and short-circuit current are cut off. When the circuit breaker is required to operate, it should be able to reliably operate, or close or open the circuit. The circuit breaker High reliability is one of its most important features. However, the circuit breaker has to withstand...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the circuit breaker equipment in the power system adopts planned maintenance. The corresponding equipment is powered off, and the opening and closing characteristics of the circuit breaker are tested by means of mechanical inspection and electrical testing. As far as maintenance is concerned, there are problems such as blindness, over-maintenance or under-maintenance, etc., resulting in a large amount of ineffective investment in manpower and material resources, increasing the planned power outage time, and at the same time increasing the possibility of personal accidents and misoperation accidents, so we need Propose an online monitoring device for opening and closing operation position status of circuit breaker

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