Microphone array-based electric reactor sound signal extraction method, system and device

Abstract

The invention discloses an electric reactor sound signal extraction method, system and device based on a microphone array, and belongs to the field of transformer substation noise signal measurement, and the method comprises the following steps: collecting a first initial sound signal of a target electric reactor through the microphone array, the first initial sound signal is used for obtaining a reactor sound signal by eliminating non-homodromous noise and homodromous noise of the first initial sound signal; eliminating non-homodromous noise through a beam forming algorithm based on a masking function; using an underdetermined blind source separation algorithm based on a K-DPC clustering algorithm to eliminate the same-direction noise and generate a reactor sound signal; the method comprises the following steps: acquiring a first initial sound signal through a microphone array and a multi-channel sound collector connected with the microphone array, and acquiring a reactor sound signal through a reactor sound signal extraction method; the method has the characteristic of accurately separating the noise of the target reactor from a complex substation environment.

Description

technical field [0001] The invention relates to the field of substation noise signal measurement, in particular to a reactor acoustic signal extraction method, system and device based on a microphone array. Background technique [0002] The UHV shunt reactor is one of the core equipment in the UHV long-distance transmission and transformation grid. It has many functions such as adjusting reactive power, limiting overvoltage, quickly cutting off arcs, and stabilizing the grid. The status detection of the UHV shunt reactor during operation is very important to ensure the safety of the equipment and even the UHV transmission network. The in-state detection technology based on acoustic signals has the advantages of low cost and no contact, and is a feasible means to carry out state detection of UHV shunt reactors under operating conditions. The target reactor is highly similar to the acoustic signal of the target reactor, which makes it difficult to accurately extract the acous...

AI Technical Summary

Problems solved by technology

The in-state detection technology based on acoustic signals has the advantages of low cost and no contact, and is a feasible means to carry out state detection of UHV shunt reactors under operating conditions. The target reactor is highly similar to the acoustic signal of the target reactor, which makes it difficult to accurately extract the acoustic signal of the target reactor

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