Title :
Adaptability analysis for fault component protection under large scale wind power penetration
Author :
Wang, C.Q. ; Song, G.B. ; Shen, Q.Y.
Author_Institution :
Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China
fDate :
March 31 2014-April 3 2014
Abstract :
With the growing scale of wind power penetrated into grid, protective relays of transmission line face the challenges of adaptability. The relays based on fault component are widely used in transmission line protection, which makes it essentially important to study the adaptability of fault component protection. The adaptability of fault component protection to wind farm integration system is studied in this paper. Fault component protection works well only when the system impedance is stable or the positive and negative sequence system impedances are approximately equal. The theoretical analysis, PSCAD simulation and fault record data show that the positive sequence impedance at wind farm side has large fluctuations and obvious difference from the negative sequence impedance. This significantly reduces the reliability of the relays based on fault component in wind farm integration system.
Keywords :
electric impedance; power grids; power transmission lines; relay protection; wind power plants; PSCAD simulation; fault component protection; large scale wind power penetration; negative sequence system impedances; positive sequence system impedances; power grid; protective relays; transmission line protection; wind farm integration system; adaptability; fault component protection; positive and negative sequence impedance; wind power integration;
Conference_Titel :
Developments in Power System Protection (DPSP 2014), 12th IET International Conference on
Conference_Location :
Copenhagen
Print_ISBN :
978-1-84919-834-9
DOI :
10.1049/cp.2014.0137