DocumentCode :
2678286
Title :
Some observations for distance protection of power transmission lines
Author :
Liao, Yuan
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Kentucky, Lexington, KY, USA
fYear :
2009
fDate :
5-8 March 2009
Firstpage :
178
Lastpage :
182
Abstract :
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.
Keywords :
decision making; fault location; power transmission faults; power transmission lines; power transmission protection; relay protection; decision making; distance protection relays; fault location; line current; line terminal voltage; power system transmission lines; relay location; time delay; tripping signal; Delay effects; Impedance; Power system faults; Power system protection; Power system relaying; Power transmission lines; Protective relaying; Relays; Transmission line matrix methods; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Southeastcon, 2009. SOUTHEASTCON '09. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-3976-8
Electronic_ISBN :
978-1-4244-3978-2
Type :
conf
DOI :
10.1109/SECON.2009.5174071
Filename :
5174071
Link To Document :
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