中国电机工程学报2017，Vol.37Issue(18)：5220-5227,8.DOI:10.13334/j.0258-8013.pcsee.161724
基于相空间重构的电压缺口检测及特征参数辨识
Voltage Notch Detection and Characteristic Parameter Identification Based on Phase Space Reconstruction
摘要
Abstract
Voltage notch was a periodic voltage disturbance appeared in power grids caused by electrostatic discharging and power electronic device commutation.As the frequency of voltage notch disturbances was very high,traditional signal analysis methods were difficult to check it out.A method was proposed for detecting voltage notch and identifying the characteristic parameters based on phase space reconstruction.The attractor was reconstructed using coordinate delay method,and the optimal delay was determined with mutual information function.Sequence of correlation dimension was calculated to determine the optimal embedding dimension.The phase trajectory of voltage notch signal in reconstruction phase space was divided into regular component and disturbance.The voltage notch was detected,the characteristic parameters such as angle,width,RMS depth and maximum depth of the voltage notch was extracted.The simulation results show that the proposed method can achieve the task of voltage notch detection and characteristic parameters identification.Compared with the wavelet transform detection algorithm,this method has the advantages of small amount of calculation and good real-time applications.关键词
电能质量/电压缺口/关联维数/相空间重构/参数辨识Key words
power quality/voltage notch/correlation dimension/phase space reconstruction/parameter identification分类
信息技术与安全科学引用本文复制引用
王宁,马峥嵘,贾清泉,董海艳..基于相空间重构的电压缺口检测及特征参数辨识[J].中国电机工程学报,2017,37(18):5220-5227,8.基金项目
国家自然科学基金资助项目(51477147,51607153) （51477147,51607153）
河北省自然科学基金项目(E2016203268) （E2016203268）
河北省教育厅资助科研项目(QN2015124).The National Natural Science Foundation of China (51477147,51607153) （QN2015124）
The Natural Science Foundation of Hebei Province (E2016203268) （E2016203268）
The Foundation of Hebei Province Department of Education (QN2015124). （QN2015124）
