Wang Kexing, Song Zhengxiang, Chen Degui, et al. Interference source identification of voltage sag in distribution system based on wavelet transform[J]. Proceedings of the CSEE, 2003, 23(6)：29-34.
[2]
Gomez J C, Morcos M M. Voltage sag and recovery time in repetitive events[J]. IEEE Transactions on Power Delivery, 2002, 17(4)：1037-1043.
[3]
Zhang Lidong, Bollen Math H J. Characteristic of voltage dips (sags) in power system[J]. IEEE Transactions on Power Delivery, 2000, 15(2)：827-832.
[4]
Gu Irene Y H, Nichlas E, Emmanouil S, et al. A statistical-based sequential method for fast online detection of fault-induced voltage dips[J]. IEEE Transactions on Power Delivery, 2004, 19(2)：497-504.
[5]
Mladen K, Liao Yuan. A new method for classification and characterization of voltage sags[J]. Electric Power Systems Research, 2001, 58(1)： 27-35.
[6]
Chilukuri M V, Dash P K. Time-frequency based pattern recognition technique for detection and classification of power quality disturbances[C]. IEEE Region 10 Annual International Conference, Proceedings/TENCON C, 2004：C260-C263.
[7]
Liu Shouliang, Xiao Xianyong, Yang Honggeng. Classification of short duration power quality disturbances based on module time-frequency matrixes similarity by S-transform[J]. Power System Technology, 2006, 30(5)：67-71.
Yang Honggeng, Xiao Xianyong, Liu Junyong. Issues and technology assessment on power quality-Part 3: Voltage sags in power system[J]. Electric Power Automation Equipment, 2003, 23(12)：1-4.
[13]
Emmanouil S, Bollen Math H J, Gu Irene Y H. Classification of power system events：voltage dips[C]. IEEE ICHQP IX, Orlando, USA, IEEE/PES, 2000：745-750.
[14]
Bollen Math H J, Emmanouil S. Characterization of three-phase unbalanced dips (as easy as one-two- three?)[C]. IEEE ICHQP IX, Orlando, USA, IEEE/PES, 2000：81-86．
[15]
刘守亮, 肖先勇, 杨洪耕. 基于 S 变换模时频矩阵相似度的短时电能质量扰动分类[J]. 电网技术, 2006, 30(5)：67-71.
Yang Honggeng, Liu Shouliang, Xiao Xianyong. Classification of voltage dips using time-frequency contour and amplitude envelope vectors by S-transform[J]. Transaction of China Electrotechnical Society, 2006, 21(8)：75-79．
Yang Honggeng, Liu Shouliang, Xiao Xianyong, et al. S-transform-based expert system for classification of voltage dips[J]. Proceedings of the CSEE, 2007, 27(1)：98-104.
[20]
Emmanouil S, Bollen Math H J, Gu Irene Y H. Expert system for classification and analysis of power system events[J]. IEEE Transactions on Power Delivery, 2002, 17(2)：423-428.
[21]
Emmanouil S, Bollen Math H J, Gu Irene Y H. Expert system for voltage dip classification and analysis[C]. Proc. IEEE Power Eng. Soc. Summer Meet., 2001：671-676.
