Substation equipment sound anomaly identification method and system

A technology of abnormal sound and identification method, applied in speech analysis, instruments, etc., can solve the problems of low sound positioning accuracy of equipment, inability to collect real sound of equipment, complex outdoor environment, etc., so as to avoid the interference of outdoor environmental noise and man-made noise. , more targeted, and solve the effect of large amount of calculation
CN112289341AInactive Publication Date: 2021-01-29STATE GRID INTELLIGENCE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
STATE GRID INTELLIGENCE TECH CO LTD
Publication Date
2021-01-29
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a substation equipment sound anomaly identification method and system. The method comprises the steps that: the sound information of target equipment of a transformer station is obtained, and the sound information is pre-processed; voiceprint features are extracted from the preprocessed sound information, and voiceprint features at least comprise FBank features, decibels, fundamental frequencies, short-time energy, short-time zero-crossing rates and correlation coefficients; the extracted voiceprint features are input into a trained voiceprint recognition model, and a recognition result is output; and the running state of the target equipment is judged based on the recognition result. According to the method and system of the invention, directional acquisition of data is carried out through a multi-element microphone array, so that acquired sound is relatively pure; sound signals acquired by a single microphone is the superposition of multi-directional sound signals; and therefore, the accuracy of sound data acquisition can be improved.
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Description

technical field

[0001] The invention relates to the technical field of abnormal sound identification of substation equipment, in particular to a method and system for identifying abnormal sound of substation equipment. Background technique

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of power grid construction and the improvement of safety requirements, the construction of substations is developing in the direction of unattended or few people on duty. At present, unattended substations mainly tend to develop in the direction of "five remotes" (telemetry, remote signaling, remote control, remote adjustment, and remote viewing). Using video monitoring systems, the "remote viewing" function has been gradually realized in substations, but for The monitoring of the sound inside the operating equipment has not been paid attention to, and the...

Claims

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