作者：邹艳平

作者单位：宁夏电力科技教育工程院, 宁夏 银川 750011

关键词：小波变换; 分解; 重构; 介损测量; 介质损耗角

摘要：

高压介质损耗测量是电力系统中检测高压电气设备的常规项目,对于高压电气设备的正常运行至关重要。依据小波分析理论、阐述了信号分解重构的过程,并且结合损耗测量中的波形特征,提出了利用小波变换来提取基波信号计算介质损耗角的检测方法,能够有效的消除谐波和噪声的影响。仿真分析表明,小波变换在介损测量中有较好的应用效果。

Study of measurement of dielectric loss based on wavelet transform

ZOU Yan-ping

Ningxia Institute of Electric Scientific Technology and Education Engineering, Yinchuan 750011, China

Abstract: The dielectric loss measurement is a normal item to test the high voltage equipment in an electric power system and is very important for the high voltage equipment.This paper introduced wavelet transform theory,discussed the processes of decomposing and composing signal.According to signal's characteristics,a method based wavelet transform was introduced to detect fundamental component in the signal to calculate dielectric loss tangent,which could reduce the effects of harmonic wave and noise.The results indicate that wavelet transform has very good application effect in dielectric loss measurement.

Keywords: Wavelet transform; Decomposing; Composing; Dielectric loss measurement; Dielectric loss tangent

2007, 33(6): 64-65105  收稿日期: 2007-5-13;收到修改稿日期: 2007-7-21

基金项目: 

作者简介: 邹艳平(1974-),女,工程师,主要从事高压电气测试工作。

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