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一种电能质量扰动检测的综合方法

A Synthetical Method of Measurement of Short Duration Power Quality Disturbances
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摘要 为了快速、准确地检测、识别电能质量扰动,文中提出了一种电能质量扰动检测的综合方法:首先用小波变换对原始信号做消噪处理,然后在时域检测扰动的开始和结束时间,根据扰动信号的周期和峰值,识别扰动信号的类型,最后在发生扰动的时间段内采用快速傅立叶算法等方法计算扰动信号的相关指标参数.仿真结果表明,这种方法快速、准确,为应用化技术提供了一种有效的方法. The paper introduces a synthetical method for measuring duration to power quality disturbances. Firstly, the wavelet transform is used to de-nolse by soft-threshold algorithm. Secondly, a difference signal is formed for detecting the beginning and the ending time of the disturbance and identified the disturbance signals based on different period and peak value. Finally, the range of the disturbance and other parameters are calculated through Fourier transform.
作者 朱韬析 王超 雒铮
机构地区 南方电网超高压输电公司广州局 浙江大学电气工程学院 广东省电力设计研究院
出处 《江南大学学报（自然科学版）》 CAS 2007年第5期560-564,共5页 Joural of Jiangnan University (Natural Science Edition)　
关键词 电能质量扰动检测 小波技术 软阈值 时域 过零点 快速傅立叶算法 duration power quality disturbances wavelet transform soft-threshold time domain zero crossing point fast Fourier transform
分类号 TM764 [电气工程—电力系统及自动化]
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参考文献10

  • 1Julio Barros,Daniel Cando,Lker Durana.Laboratory for power quality analysis[J].International Journal of Electrical Engineering Education,2001,38(3):210-222.
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二级参考文献18

  • 1[1]Angrisani L, Daponte P, Apuzzo M D. A measument method based on the wavelet transform for power quality analysis[J]. IEEE Trans Power Delivery, 1998, 13(4):990-998.
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共引文献529

江南大学学报（自然科学版）
2007年 第5期

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