Error Compensation in Distance Relays Caused by Wind Power Plants in the Power Grid
Trujillo, L (Universidad Autónoma de Nuevo León, Mexico) ; Conde, A (Universidad Autónoma de Nuevo León, Mexico) ; Leonowicz, Z (Wroclaw University of Technology, Poland)
/ ||http://www.sciencedirect.com/science/article/pii/S0378779613002198 ||ENY-PREPRINT-2013-013|
Abstract: This article presents the Prony method as a filtering technique for distance relays. First, the effect of non-filtered frequency components generated by Wind Power Plants in distance relays is evaluated in a simplified model of a doubly fed induction generator, resulting in an error of apparent impedance measurement. Then, the effects of non-filtered frequency components for typical distance relay are presented. The error in apparent impedance measurement is evaluated in reach and operation time of the relay; a distorted characteristic of the mho distance relay is shown in the impedance plane. Finally, Prony method as a filtering technique is implemented as a solution of the apparent impedance measurement error, and the simulated case and a real fault event are evaluated to validate the proposed distance relay algorithm. Thus the asynchronous frequency components of voltage and current signals are identified and filtered, as a result the performance of the distance relay is enhanced.
Keyword(s): wind power plant ; Prony method ; distance relay ; protective relays
Note: Preprint published in Electric Power Systems Research, Volume 106, January 2014, Pages 109–119 http://dx.doi.org/10.1016/j.epsr.2013.08.009
Fulltext : http://zet10.ipee.pwr.wroc.pl/record/442/files/
Cited by: try citation search for ENY-PREPRINT-2013-013; http://www.sciencedirect.com/science/article/pii/S0378779613002198
Record created 2013-09-18, last modified 2013-09-19
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