Fault Section Location in Distribution Network with DG Based on Voltage Sag Correlation Coefficient

Abstract:

A fault location method based on correlation coefficient was proposed in the paper for the distribution system with distributed generation (DG). At first, by acquiring the Thevenin equivalent parameters of each DG to establish simulation model of the actual distribution network. Then voltage sag feature vectors of each bus would be obtained by simulating short-circuit fault at the location of each bus, respectively. Afterwards, by calculating and analyzing the correlation coefficient between each bus and the actual fault node,, suspicious fault sections can be determined. Finally, the fault section was identified by utilizing the associated node of every suspicious fault section .The method could reduce the fault search range obviously, without a massive requirement of measuring devices, and the required data can be obtained easily. Simulation results of a 10kV distribution network with DG showed that the proposed method was accuracy and effective.

• Periodical: Advanced Materials Research (Volume 787)
• Pages: 902-908
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.787.902
• Online since: September 2013
• Authors: Xin Du, Min Fang Peng, Hong Mei Zeng, Liang Zhu, Hong Wei Che, Zheng Yi Liu
• Keywords: Correlation Coefficient, Distribution Network, Fault Section Location, Voltage Sag

References

[1] Wang Chengshan: Microgrid presentations, J. Proceedings of the CSEE, vol. 32 , no. 25, p.1, (2012).

[2] N. Perera, A. D. Rajapakse, T. E. Buchholzer: Isolation of Faults in Distribution Networks With Distributed Generators, J. IEEE Transactions on Power Delivery , vol. 23 , no. 4, pp.2347-2355, (2008).

DOI: 10.1109/tpwrd.2008.2002867

[3] Lin Xia, Lu Yuping, Wang Lianhe: New fault region location scheme in distribution system with DGs, J. Transactions of China Electrotechnical Society, vol. 23 , no. 11, pp.139-145, (2008).

[4] JIA Haoshuai, ZHENG Tao, ZHAO Ping, et al: Fault location algorithm for distribution system based on fault region searching, J. Automation of Electric Power Systems, vol. 36 , no. 17, pp.62-66, (2012).

[5] ZHANG Yong, DONG Ming, ZHANG Yan, et al: Fault location in distribution systems with distributed generators with incorrect and missing alarm messages taken into account, J. Automation of Electric Power Systems，vol. 36 , no. 15, pp.57-62, (2012).

[6] Zijad Galijasevic, Ali Abur: Fault Location Using Voltage Measurements, J. IEEE Trans onPow Del, vol. 17 , no. 2, pp.441-445, (2002).

DOI: 10.1109/61.997915

[7] Mokhlis H，Li H: Non-linear representation of voltage sag profiles for fault location in distribution networks, J. International Journal of Electrical Power & Energy Systems, vol. 33 , no. 1, pp.124-130, (2011).

DOI: 10.1016/j.ijepes.2010.06.020

[8] Sukumar M. Brahma: Fault Location in Power Distribution System With Penetration of Distributed Generation, J. IEEE Trans on Pow Del, vol. 26 , no. 3, pp.1545-1553, (2011).

DOI: 10.1109/tpwrd.2011.2106146

[9] LI Xun, GONG Qingwu, XIAO Hui, et al: Fault Location for Distribution Network Based on Correlation Analysis Matching Degree, J. Automation of Electric Power Systems, vol. 36 , no. 1, pp.90-95, (2012).