Research on a New Fault Phase Selector of Protective Relay for Double Circuit Lines on same Tower

Abstract:

Aiming at the misoperation of the conventional phase selector by phase current-difference during some cross country faults, a fault phase selector is developed. Based on the fault lines of the corresponding fault phase are selected, a novel synthesis fault phase selector using voltages and currents in single circuit at single side is proposed, which is based on comparing the difference of fault voltages to make sure all the fault phase in the lines and judging the phase degree and amplitude condition of the fault currents. Used this scheme and the phase current difference, the fault phase may be picked up correctly in double circuit lines on the same tower, especially in cross country faults.

• Periodical: Applied Mechanics and Materials (Volumes 325-326)
• Pages: 446-451
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.325-326.446
• Online since: June 2013
• Authors: Zhao Qiang Yuan, Xiao Ting Yu, Yin Mu Liu
• Keywords: Cross Country Fault, Double Circuit Line on same Tower, Fault Phase Selector

References

[1] KANG Xiao-ning, LIANG Zhen-feng. Survey on the protective relaying and auto recourse for double circuit lines on the same towe r [J].Relay, 2004, 32(23) : 72-76.

[2] Zhu Shengshi. High Tension Networks Protection: theory and techniques [M]. China Electric Power Press, 2005.

[3] Ge Yaozhong．New types of protective relaying and fault location：theory and techniques [M]. Xi'an：Xi'an jiaotong University Press, (1996)

[4] SUO NAN Jia-le, Ge Yaozhong, Tao Huiliang, et al. The Micro-processor Based Fault Phase Indicator for the Double Circuit Line on the Same Tower Using Six Sequence Components [J]. Proceedings of the CSEE, 1991, 11(6):129.

[5] SUO NAN Jia-le, WANG Shu-gang, ZHANG Chao, et al, New fault phase selector for double -circuit lines protective relaying based on differential fault current components. Automation of Electric Power Systems, 2004, 28(15): 47252.

[6] YANG Zhongli, SONG Guobing, YAO Yongfeng, SUO NAN Jia-le. Fault Phase Selector of Protective Relay for Cross Country Fault on Double Circuit Lines [J]. Xi'an Jiao tong University Press, 2011, 45(2):97-101.

[7] YU Bo, YANG Qi-xun, LI Ying, et al. Research on fault phase selector of protective relay for double circuit lines on the tower [J] . Proceedings of the CSEE, 2003, 23(4) : 38 -42, 76.

[8] SUO NAN Jia-le, LIU Dong, XIE Jing, et al. Cross country fault identifier for power system transmission line on a same pole [J] . Automation of Electric Power Systems, 2007, 31(1) : 47-52.

[9] SUO NAN Jia-le, GE Yao-zhong, TAO Huiliang, et al. The micro processor based fault phase indicator for the double circuit line o n the same tower using six sequence components [J]. Proceedings of the CSEE, 1991, 11(6): 1-9.