Academic Journal of Engineering and Technology Science, 2021, 4(9); doi: 10.25236/AJETS.2021.040906.

## Fault location algorithm for partial coupling double-circuit transmission lines

Author(s)

Chen Youhui

Corresponding Author:
Chen Youhui
Affiliation(s)

State Grid Liaoning Electric Power Co,Ltd. Power Electric Research Institute, Shenyang 110015, China

### Abstract

Multi-circuit transmission lines on the same tower have become the inevitable trend of power grid construction, mostly partial coupling mode. Affected by the partial coupling characteristics, the existing fault location methods have large error. Therefore, this paper develops a study about the fault analysis and fault location method for the partial decoupling double-circuit transmission lines. Based on its structure and characteristics, as well as the lines decoupling theory, the interface equations of demarcation point are built. On the basis of the above study, the new fault location algorithm based on time-domain for partial coupling double-circuit transmission lines are presented. Finally, ATP/EMTP is used to construct the model of partial coupling of double-circuit transmission lines. After the overall simulation and verification, it shows that the presented algorithm is accurate.

### Keywords

partial coupling; double-circuit transmission lines on the same tower; fault location; interface equation

### Cite This Paper

Chen Youhui. Fault location algorithm for partial coupling double-circuit transmission lines. Academic Journal of Engineering and Technology Science (2021) Vol. 4, Issue 9: 32-35. https://doi.org/10.25236/AJETS.2021.040906.

### References

[1] SHANG Liqun, LIANG Wenli. Review of high voltage DC transmission lines fault location [J]. High Voltage Apparatus, 2016, 52(8): 1-6.

[2] KANG Zhongjian, TIAN Aina, FENG Yanyan, et al.Fault section locating method based on zero sequence impedance model fault feature in distribution network with distributed generators [J]. Transactions of China Electrotechnical Society, 2016, 31(10): 214-221.

[3] XIA Yi, TAI Nengling, FAN Chunju, et al. Four zero-sequence component method of asymmetry parameter four-parallel lines on the same tower and its ault analysis [J]. Power System Protection and Control, 2013, 41(18): 9-16.

[4] JIANG W Q, LIU Q J, LI C J. Review of fault location for double-circuit parallel transmission lines on the same pole[C] // APAP, 2011, 2: 1125-1129.

[5] GAO Yanfeng, ZHU Yongli, YAN Hongyan, et al. A new fault location method of transmission lines based on double-terminal traveling wave [J]. Power System Protection and Control, 2016, 44(8): 8-13.

[6] LIU Zhenzhi, SHU Qin, HAN Xiaoyan, et al. An iterative fault location algorithm using the difference of wave velocity between zero mode component and aerial mode component of traveling wave [J]. Power System Protection and Control, 2015, 43(8): 88-93.

[7] XU Jie, ZHANG Yongjian, SUN Jia, et al. Single terminal travelling waves location based on pattern recognition [J]. High Voltage Apparatus, 2012, 48(6): 28-33.

[8] YU Zhongan, CHENG Mingzhao, GUO Peiyu, et al. A new fault locating of T-type transmission line consisting of four parallel-line and double circuit [J]. Power System Protection and Control, 2014, 42(15): 8-14.

[9] FAN Guochen, ZHU Yongli, SHI Jinmao, et al. Fault location scheme for transmission lines using Kaiser self convolution windowed FFT phase comparison[J]. Power System Protection and Control, 2015, 43(7): 143-148.

[10] WU Biao, YU Zhongan, ZOU Hao, et al. Fault location for four-parallel transmission lines on same tower based on ant colony algorithm [J]. Power System Protection and Control, 2015, 43(20): 45-50.