基于可听声的变压器故障诊断技术综述

Overview on transformer fault diagnosis technology based on audible sound

针对变压器故障类型判断及故障预警问题,从信号采集、信号消噪、特征量提取、故障诊断4个方面综述了基于可听声的变压器故障诊断技术研究的新进展,对其诊断效果及研究动向进行分析和展望。研究结果表明:该技术在(1)变压器可听声产生机理研究及故障原因与趋势预测;(2)变压器声信号的消噪技术及频谱分析;(3)振动声信号的专家智能分析系统的研究方面具有广阔的发展前景。

Aiming at the problem of fault diagnosis and fault warning of power transformer,reviews the new developments of transformer fault diagnosis technology based on the audible sound from the four parts such as signal acquisition,signal denoising,feature extraction and fault diagnosis,analyzes and brings forward the expectation of diagnosis effect and the research trend.The research result shows that this technology has broad development prospect in the following three aspects:(1)the research of transformer audible sound occurrence mechanism,and the prediction of fault reason and fault trend;(2)the analysis of the transformer acoustic signal,including spectral analysis and noise elimination technology;(3)the research of the expert intelligent analysis system for vibration acoustic signal.