Partial discharge fault monitoring and evaluating device and method

Abstract

The invention discloses a partial discharge fault monitoring and evaluating device and a method. The device comprises a microphone array signal collection module which comprises an ultrasonic microphone array and is configured to carry out ultrasonic signal collection on detected power equipment and cache audio data; a partial discharge event detection module which is based on machine learning andis configured to perform real-time monitoring of a partial discharge event on the audio data acquired by the microphone array signal acquisition module by using a partial discharge event detection algorithm based on machine learning, mark the occurrence time of the partial discharge event and cache the audio data; and a sound source positioning module which is configured to find out the audio data corresponding to the marked occurrence time of the partial discharge event from the cached audio data, and perform sound source positioning on the audio data by using a sound source positioning algorithm to obtain an intensity distribution diagram of a sound source.

Description

technical field [0001] The invention relates to the field of power equipment detection, in particular to the monitoring and evaluation of partial discharge of power equipment. Background technique [0002] In the power system, the phenomenon of partial discharge of equipment is an important index reflecting the operation status of power equipment. At present, the commonly used partial discharge equipment (PD equipment) is the ultrasonic partial discharge detector, which requires manual hand-held inspection equipment to inspect the power equipment. The inspection efficiency of the inspection equipment is low, and long-term use will cause hearing damage; The location of partial discharge faults and the assessment of the severity of partial discharge faults need to rely on the personal experience of the inspectors, the test results are not intuitive, and the test experience is difficult to reuse. [0003] Therefore, there is an urgent need for a partial discharge fault monitor...

AI Technical Summary

Problems solved by technology

At present, the commonly used partial discharge equipment (PD equipment) is the ultrasonic partial discharge detector, which requires manual hand-held inspection equipment to inspect the power equipment. The inspection efficiency of the inspection equipment is low, and long-term use will cause hearing damage; The location of partial discharge faults and the assessment of the severity of partial discharge faults need to rely on the personal experience of the inspectors, the test results are not intuitive, and the test experience is difficult to reuse

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