Vibration signal-based on-line detection method for braking characteristic parameter of high-voltage circuit breaker

Abstract

The invention discloses a vibration signal-based on-line detection method for a braking characteristic parameter of a high-voltage circuit breaker, and relates to a detection method of the high-voltage circuit breaker. Currently, a power system mostly uses a prevention experiment method during periodic maintenance to understand the characteristic parameter of the circuit breaker, time and labor are wasted by the method, the action reliability of the circuit breaker can be reduced by frequent operation and excessive disassembly and maintenance, and certain adverse impact is brought. Acceleration sensors are used and are respectively arranged on a spring operating mechanism and a circuit breaker cross beam to acquire two paths of vibration signals, a motion time parameter of the circuit breaker during the breaking process is extracted by a multi-path vibration signal, relatively good effects on measurement accuracy and stability are achieved, and a new idea is provided for on-line extraction of the characteristic parameter of the circuit breaker. With the method disclosed by the technical scheme, the problems that off-line test is needed by a traditional measurement method and sensorinstallation is complicated are solved.

Description

technical field [0001] The invention relates to a detection method of a high-voltage circuit breaker, in particular to an on-line detection method of the opening characteristic parameter of the high-voltage circuit breaker based on a vibration signal. Background technique [0002] As an important protection and control electrical appliance in the power system, the reliability of the performance of the high-voltage circuit breaker is related to the safety and stability of the entire power grid operation. As an important indicator of the performance of the circuit breaker, the characteristic parameters of the circuit breaker are important monitoring content for the daily work of the power department. , related research has gradually become a research hotspot. At present, the power system mostly adopts the method of preventive test during regular maintenance to understand the characteristic parameters of the circuit breaker. negative impact. Therefore, it is urgent to propose...

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Problems solved by technology

However, this method has a better effect on extracting large shock vibrations, and it is not obvious for small shocks, so it has certain limitations.

At the same time, although the above-mentioned scholars have done a lot of research work on the extraction of circuit breaker time parameters, the proposed method still has shortcomings, such as the installation of the experimental method is cumbersome and the measurement is difficult; the theoretical simulation and image processing cannot be extended to online detection, and the circuit breaker The online detection of the time parameter of the device has not been effectively solved

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