Title :
An active power filter for protective relaying at EHV line
Author :
Kumar, Parmod ; Mahajan, Alka ; Singh, Bhim
Author_Institution :
Dept. of Electr. Eng., Delhi Coll. of Eng., India
Abstract :
Nonsinusoidal voltages and currents affect the performance of protective relays under normal as well as fault conditions. The intent of this paper is to present an active power filter for relaying operations. The active power filter provides harmonics-free voltage and current signals to the relay, thereby ensuring its designed performance. Combined shunt and series active power filters are used to filter out the voltage as well as current harmonics from the input signal to the relay. Simulation studies for a single phase to earth fault on a 220 kV transmission line have been presented
Keywords :
active filters; power harmonic filters; power system harmonics; power system relaying; power transmission faults; power transmission lines; power transmission protection; relay protection; 220 kV; EHV line; active power filter; fault conditions; normal conditions; protective relaying; shunt/series active power filters; single-phase to earth fault; Active filters; Earth; Power harmonic filters; Power system harmonics; Power transmission lines; Protection; Protective relaying; Relays; Signal design; Voltage;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818563