Title :
Modified distance protection due to presence of STATCOM on a transmission line
Author :
Jamali, S. ; Kazemi, A. ; Shateri, H.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol. (IUST), Tehran, Iran
Abstract :
This paper presents a modified distance protection due to the presence of STATic synchronous COMpensator (STATCOM), one of the shunt connected Flexible Alternating Current Transmission System (FACTS) devices. The presence of STATCOM on a transmission line has a great influence on the measured impedance at the relaying point. The measured impedance itself depends on the power system structural conditions, pre-fault loading, and especially the fault resistance. In the presence of STATCOM, its injected current as well as its installation point affects the measured impedance. Therefore, the conventional distance techniques do not fulfill the protective duties satisfactorily and new approaches are required.
Keywords :
electric impedance measurement; flexible AC transmission systems; power transmission faults; power transmission protection; relay protection; static VAr compensators; STATCOM; Static synchronous compensator; distance protection; fault resistance; injected current installation point; power system structural conditions; pre-fault loading; relaying point impedance; shunt connected flexible alternating current transmission system; transmission line; Automatic voltage control; Electrical resistance measurement; Flexible AC transmission systems; Impedance measurement; Power system protection; Power system relaying; Power transmission lines; Protective relaying; Transmission line measurements; Transmission lines; Adaptive Distance Protection; FACTS devices; Measured impedance; STATCOM;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5282014
