TY - GEN
T1 - Some observations for distance protection of power transmission lines
AU - Yuan, Liao
PY - 2009
Y1 - 2009
N2 - This paper presents some observations related to distance protection for power system transmission lines. Classical distance protection relays adopt the line terminal voltage and line current to calculate the distance between the fault and the relay location and then make a decision on whether a tripping signal should be issued and, if so, what the time delay should be. An interesting question is: is it possible for two faults at different points of the system to result in the same bus voltage and the same line current at a relay location such that the relay cannot distinguish between them? This paper presents some of these scenarios that may impose challenges on distance relay settings and operation.
AB - This paper presents some observations related to distance protection for power system transmission lines. Classical distance protection relays adopt the line terminal voltage and line current to calculate the distance between the fault and the relay location and then make a decision on whether a tripping signal should be issued and, if so, what the time delay should be. An interesting question is: is it possible for two faults at different points of the system to result in the same bus voltage and the same line current at a relay location such that the relay cannot distinguish between them? This paper presents some of these scenarios that may impose challenges on distance relay settings and operation.
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U2 - 10.1109/SECON.2009.5174071
DO - 10.1109/SECON.2009.5174071
M3 - Conference contribution
AN - SCOPUS:71049159156
SN - 9781424439775
T3 - Conference Proceedings - IEEE SOUTHEASTCON
SP - 178
EP - 182
BT - IEEE SoutheastCon 2009, Technical Proceedings
T2 - IEEE Southeastcon 2009
Y2 - 5 March 2009 through 8 March 2009
ER -