A Protection Scheme for Cross-Country Faults and Transforming Faults in Dual-Circuit Transmission Line Using Real-Time Digital Simulator: A Case Study of Chhattisgarh State Transmission Utility

  • V. Ashok
  • Anamika YadavEmail author
Research Paper


This paper presents a protection scheme for cross-country faults and transforming faults in a dual-circuit transmission line of 400-kV Indian transmission network of Chhattisgarh state. An intelligent relaying scheme is designed for fault detection and classification of cross-country faults and transforming faults in a mutually coupled dual-circuit transmission line. The proposed scheme is a hybrid framework of discrete wavelet transform and artificial neural network (DWT–ANN) which is used to detect the fault, distinguish the faulty phase(s), and identify the type of fault in a dual-circuit transmission line. The cross-country faults and transforming faults are difficult to detect by the conventional scheme because the first involves faults at two different locations and the latter involves a change in the type of fault after a few cycles. A practical 400-kV power transmission network of Chhattisgarh state has been modeled and simulated in real-time digital simulator (RTDS) environment to reproduce real-time fault events and further analysis is carried out in MATLAB software. To examine the efficacy of the proposed protection scheme, a wide range of case studies have been done thereby varying different fault parameters, power system operating parameters, and typical fault scenarios. The results described that the proposed protection scheme based on the DWT–ANN algorithm is reliable and extremely responsive to various types of cross-country and transforming faults which are more complex in nature. The distinct advantage of the proposed protection scheme is that it accurately detects all types of cross-country faults and transforming faults in a dual-circuit transmission line by employing single-end data only.


Distance relay Dual-circuit line Cross-country faults Transforming faults DWT-ANN RTDS 



The authors acknowledge the financial support of Central Power Research Institute, Bangalore for funding the Project. No. RSOP/2016/TR/1/22032016, Dated: 22/03/2016. The authors are thankful to the Head of the institution, National Institute of Technology, Raipur, for providing the research facilities to carry out this research project. The authors are grateful to the local power utility (Chhattisgarh State Power Transmission Company Limited) for their cooperation in providing valuable data to execute this research work. The authors are also indebted to the Power Systems Division of Central Power Research Institute, Bangalore for permission to carry out simulation studies in Real-Time Digital Simulator (RTDS) laboratory.


  1. Abdoos AA, Gholamian SA, Takami MMA (2016) A precise scheme for detection of current transformer saturation based on time-frequency analysis. J Meas 94:692–706CrossRefGoogle Scholar
  2. Agarwal RK, Xuan QY, Dunn RW, Johns AT, Bennett A (1999) A novel fault classification technique of double circuit lines based on a combined unsupervised/supervised neural network. IEEE Trans Power Deliv 14:1250–1256CrossRefGoogle Scholar
  3. Agrasar M, Uriondo F, Hernandez JR, Alvarez R (1997) A useful methodology for analyzing distance relays performance during simple and inter-circuit faults in multi-circuit lines. IEEE Trans Power Deliv 12(4):1465–1471CrossRefGoogle Scholar
  4. Agrasar M, Uriondo F, Hernández JR (1998) Evaluation of uncertainties in dual lines distance relaying A global sight’. IEEE Trans Power Deliv 12(4):1033–1039CrossRefGoogle Scholar
  5. Asghari Govar S, Sayedi H (2016) Adaptive CWT-based transmission line differential protection scheme considering cross-country faults and CT saturation. IET Gener Transm Distrib 10(9):2035–2041CrossRefGoogle Scholar
  6. Bhalja BR, Maheswari RP (2007) High resistance faults on two terminal parallel transmission line: analysis, simulation studies, and an adaptive distance relaying scheme. IEEE Trans Power Deliv 22:801–812CrossRefGoogle Scholar
  7. Bi T, Li W, Xu Z, Yang Q (2012) First-zone distance relaying algorithm of parallel transmission lines for cross-country grounded faults. IEEE Trans Power Deliv 27(4):2185–2192CrossRefGoogle Scholar
  8. Bo ZQ, Aggarwal RK, Johns AT, Li HY, Song YH (1997) A new approach to phase selection using fault generated high-frequency noise and neural networks. IEEE Trans Power Deliv 12:106–115CrossRefGoogle Scholar
  9. Chowdhury FN, Aravena JL (1998) A modular methodology for fast fault detection and classification in power systems. IEEE Trans Control Syst Technol 6:623–634CrossRefGoogle Scholar
  10. Dalstein T, Kulicke B (1995) Neural network approach to fault classification for high-speed protective relaying’. IEEE Trans Power Deliv 10:1002–1011CrossRefGoogle Scholar
  11. Jain A, Thoke AS, Patel RN, Koley E (2010) Inter-circuit and cross-country fault detection and classification using artificial neural network. In: India conference (INDICON), 2010 Annual IEEE, 2010, pp 1156–1161Google Scholar
  12. Jongepier AG, van der Sluis L (1994) Adaptive distance protection of a double-circuit line. IEEE Trans Power Deliv 9:1289–1297CrossRefGoogle Scholar
  13. Kumar B, Yadav A (2017) Backup protection scheme for transmission line compensated with UPFC during high impedance faults and dynamic situations. IET Sci Meas Technol 11(6):703–712MathSciNetCrossRefGoogle Scholar
  14. Mahanty RN, Dutta Gupta PB (2006) Comparison of fault classification methods based on wavelet analysis and ANN. Electric Power Compon Syst 34:47–60CrossRefGoogle Scholar
  15. Nashawati E, Fischer N, Le B, Taylor D (2011) Impacts of shunt reactors on transmission line protection. In: 38th annual western protective relay conference-2011, October 2011, pp 1–17Google Scholar
  16. Omar NA, Yusof AM, Karim SPA (2012) Effect of 132 kV cross-country fault on distance protection system. In: AMS 2012, Asia international conference on modelling & simulation, Asia international conference on modelling and simulation, 2012, pp 167–172Google Scholar
  17. Silva KM, Souza BA, Brito NSD (2006) Fault detection and classification in transmission lines based on wavelet transform and ANN. IEEE Trans Power Deliv 21:2058–2063CrossRefGoogle Scholar
  18. Singh S, Viswakarma DN (2017) Anovel methodology for identifying cross-country faults in series compensated double circuit transmission line. In: 6th international conference on soft computing and communications-ICSCC-2017, pp 7–8Google Scholar
  19. Skok S, Marusic A, Tesnjak S, Pevik L (2002) Double-circuit line adaptive protection based on Kohonen-neural network considering different operation and switching modes. Large Eng Syst Conf Power Eng 2:153–157Google Scholar
  20. Solak K, Rebizant W (2010) Analysis of differential protection response for cross-country faults in transmission lines’, modern electric power systems (MEPS). In: 2010 proceedings of the international symposium, 2010, pp 1–4Google Scholar
  21. Spoor DJ, Zhu J (2005) Inter-circuit faults and distance relaying of dual-circuit lines. IEEE Trans Power Deliv 20(3):1846–1852CrossRefGoogle Scholar
  22. Su B, Dong X, Sun Y (2003) Impact of transforming fault on fault phase selector based on differential superimposed phase currents’, Power Eng. Soc. Gen. Meeting IEEE 4:2144Google Scholar
  23. Swetapadma A, Yadav A (2015a) Improved fault location algorithm for cross-country faults, transforming faults and shunt faults in TCSC compensated transmission line. IET Gener Transm Distrib 9(13):1597–1607CrossRefGoogle Scholar
  24. Swetapadma A, Yadav A (2015b) All shunt fault location including cross-country and transforming faults in transmission lines without fault type classification. Electr Power Syst Res 123:1–12CrossRefGoogle Scholar
  25. Swetapadma A, Yadav A (2018) An artificial neural network based solution to locate the cross-country faults in double circuit series capacitor compensated transmission lines. Int Trans Electr Energy Syst 28:1–20CrossRefGoogle Scholar
  26. Xu ZY, Li W, Bi TS, Xu G, Yang QX (2011) First zone distance relaying algorithm of parallel transmission lines for cross-country non-earthed faults. IEEE Trans Power Deliv 26:2486–2494CrossRefGoogle Scholar

Copyright information

© Shiraz University 2019

Authors and Affiliations

  1. 1.Department of Electrical EngineeringNIT RaipurRaipurIndia

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