Digital identification of voltage sag in distribution system

Author

Kexing, Wang ; Zhengxiang, Song ; Degui, Chen ; Jianhua, Wang ; Yingsan, Geng

Author_Institution

Sch. of Electr. Eng., Xi´´an Jiaotong Univ., China

Volume

1

fYear

2002

fDate

13-17 Oct 2002

Firstpage

459

Abstract

Voltage sags in distribution system occur more frequently and devastatingly than other power quality problems. Voltage sags due to line faults, transformer energizing and induction motor starting are the main interference sources. The reasons leading to these sags are analyzed and simulation result are presented by an EMTP model in this paper. A new identification method to sag waveforms is presented in this paper, since B-spline wavelet transform is good at the analysis of singularity. The characteristics of sag waveform are extracted easily and accurately by using the B-spline wavelet transform.

Keywords

EMTP; fault location; parameter estimation; power distribution faults; power supply quality; power system simulation; splines (mathematics); wavelet transforms; B-spline wavelet transform; EMTP; distribution system voltage sag; induction motor starting; interference sources; line faults; power quality; singularity analysis; transformer energizing; voltage sag digital identification; Analytical models; EMTP; Induction motors; Interference; Power quality; Power system modeling; Spline; Voltage fluctuations; Wavelet analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on

Print_ISBN

0-7803-7459-2

Type

conf

DOI

10.1109/ICPST.2002.1053585

Filename

1053585