Title :
Comparison of methods for voltage sag source location in distribution system
Author :
Qian-qian, Gao ; Yong-hai, Xu ; Wei-guo, He ; Rui-an, Dong ; Xiao-yin, Zhang
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
Voltage sag has been one of the most concerned problems of power quality. Identifying the location of the source of voltage sag is critically necessary for power-quality troubleshooting, diagnosis and mitigation, and it is helpful to distinguish responsibilities and solve disputes caused by voltage sag. This paper analyses and compares four existing location methods based on reactive power change, slope of the system trajectory, real current component and distance relay. The distance relay method shows the best performance through simulations using PSCAD.
Keywords :
power distribution; power supply quality; reactive power; PSCAD simulation; distance relay method; distribution system; power quality diagnosis; power quality mitigation; power quality troubleshooting; reactive power change method; real-current component method; system trajectory slope method; voltage sag source location; Circuit faults; Impedance; Monitoring; Protective relaying; Reactive power; Trajectory; Voltage fluctuations; location; power quality; voltage sag source;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8754-7
Electronic_ISBN :
pending
DOI :
10.1109/ICIEA.2011.5975637
