中国电机工程学报2017，Vol.37Issue(24)：7121-7132,12.DOI:10.13334/j.0258-8013.pcsee.162592
一种暂态电能质量扰动检测的新方法
A Novel Algorithm for Transient Power Quality Disturbances Detection
摘要
Abstract
In practice, the power quality (PQ) signals captured by the devices are often corrupted by the noise which is the main challenge of transient power quality disturbances (PQDs) detection. For the traditional PQDs detection methods, some of them are only suitable for the analysis of steady-state disturbances, some have the disadvantage of too heavy computation burden, and some are very much influenced by the noise and their effectiveness are therefore greatly deteriorated by the noises. To improve the accuracy of transient PQDs detection in low signal noise ratio (SNR) environment, a new transient PQDs detection method was proposed in this paper. The proposed method is very simple, and it does not need to filter the signals in advance. At the same time, the proposed method has only two parameters which are not sensitive to the detection results. The contrast experiments of the proposed method, the generalized morphological filter and difference-entropy, and the detection method based on singular value decomposition for the transient PQDs detection were performed, the results show that the proposed method not only has high noise immunity, but also has good detection effect for disturbances occur to the zero crossing of the voltage waveform, and it can indicate disturbances polarity. Finally, an actual transient disturbance was employed to test the effectiveness of the proposed method.关键词
暂态电能质量/扰动检测/滤波/过零时刻/抗噪性Key words
transient power quality/disturbances detection/filter/zero crossing of the voltage waveform/noise immunity分类
信息技术与安全科学引用本文复制引用
王燕,李群湛,周福林..一种暂态电能质量扰动检测的新方法[J].中国电机工程学报,2017,37(24):7121-7132,12.基金项目
国家重点研发计划项目(2016YFB1200401-102H). The National Key Research and Development Program of China (2016YFB1200401-102H). （2016YFB1200401-102H）
