A new approach to the setting of directional overcurrent relays by incorporating cascading outages

Document Type : Article


1 - Department of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Iran - Zanjan Electricity Distribution Company (ZEDC), Zanjan, Iran

2 Department of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Iran


Directional overcurrent relays (DOCRs) are the essential protective devices in distribution networks which are usually set without considering any contingencies. However, the current challenge in power systems is the existence of uncertainty and its unfavorable consequences. It sometimes appears that some elements simultaneously fail which makes other parts to be overloaded to the extent that it leads to cascading outages. Therefore, DOCRs may have mal-operation which ends in unwanted trips when there is no fault, or they may not operate in the case the fault is located within their reach point. In such cases, the coordination setting will need complex programming with many related non-linear inequality constraints. In this paper, a novel hybrid method is proposed based on multi-objective optimization including new objective functions by using the genetic algorithm (GA). Also, the cascading outages are considered in the presented method based on network data analysis. This approach is performed on distribution part of the IEEE 14-bus meshed system, and a real industrial radial feeder named TOSEE, located in Iran. The simulations have been implemented in MATLAB and PowerFactory-DIgSILENT software packages in different models, and the results are evaluated.


[1]    Saha, D. Datta, A. Kumar, B. and Das, P. “A comparative study on the computation of directional overcurrent relay coordination in power systems using PSO and TLBO based optimization”, Eng. Comput., 33(2), pp. 603-621, (2016). 
[2]    Kheshti, M. and Kang, X. “Optimal overcurrent relay coordination in distribution network based on Lightning Flash Algorithm”,  Eng. Comput., 35(3), pp. 1140-1160, (2018).
[3]    Zeineldin, H. Sharaf, H. Ibrahim, D. et al., “Optimal protection coordination for meshed distribution systems with dg using dual setting directional over-current relays,” IEEE Trans. Smart Grid, 6(1), pp. 115–123, (2015).
[4]    Urdaneta, A. J. Nadira, R. and Perez, L. G. “Optimal coordination of directional overcurrent relays in interconnected power systems,” IEEE Trans. Power Del., 3(3), pp. 903–911, (1988).
[5]    Chattopadhyay, B. Sachdev, M. S. and Sidhu, T. S. “An on-line relay coordination algorithm for adaptive protection using linear programming technique”, IEEE Trans. Power Del., 11(1), pp. 165-173, (1996). 
[6]    Salazar, C. and Enriquez, A. “Coordination of overcurrent relays using genetic algorithms and unconventional curves”, IEEE Latin America Trans., 12(8), pp. 1449 – 1455, (2014). 
[7]    Najy, W. K. A. Zeineldin, H. H. and Woon, W. L. “Optimal protection coordination for microgrids with grid-connected and islanded capability,” IEEE Trans. Ind. Electron., 60(4), pp. 1668-1677, (2013). 
[8]    Marcolino, M. Leite, J. and Mantovani, J.  “Optimal coordination of overcurrent directional and distance relays in meshed networks using genetic algorithm”, IEEE Latin America Trans., 13(9), pp. 2975 - 2982, (2015).
[9]    Shih, M. Salazar, C. and Enríquez, A. “Adaptive directional overcurrent relay coordination using ant colony optimisation”, IET Gen, Trans & Dist., 9(14) , pp. 2040 - 2049, (2015). 
[10]    Zeineldin, H. El-Saadany, E. and Salama, M. “Optimal coordination of overcurrent relays using a modified particle swarm optimization,” Electr. Power Syst. Res., 76(11), pp. 988–995, (2006).
[11]    Yazdaninejadi, A. Nazarpour, D. and Talavat, V. “Coordination of mixed distance and directional overcurrent relays: mis-coordination elimination by utilizing dual characteristics for DOCRs”, Int. Trans. Elect. Energ. Syst,. 29(3), p.e2762, (2018).
[12]    Niranjan, P. Choudhary, N. K. Singh, R. K. “Performance analysis of different optimization techniques on protection coordination of overcurrent relay in microgrid,” Int. Conf. Elect. Electron. Comp. Eng. (UPCON), pp. 1-6, (2019).
[13]    Saleh, K. A. Zeineldin, H. H. and El- Saadany, E. F. “Optimal protection coordination for microgrid considering n−1 contingency,” IEEE Trans. Ind.Informat., 13(5), pp. 2271–2278, (2017).
[14]    Urdaneta, A. J. Perez, L. G. and Restrepo, H. “Optimal coordination of directional overcurrent relays considering dynamic changes in the network topology”, IEEE Trans. Power Del., 12(4), pp. 1458-1464, (1997).
[15]    Noghabi, A. S. Mashhadi, H. R. and Sadeh, J. “Optimal coordination of directional overcurrent relays considering different network topologies using interval linear programming”, IEEE Trans. Power Del., 25(3), pp. 1348–1354, (2010).
[16]    Madaminov, S. “Fast method for finding N-2 contingencies in power grid”, M.Sc Thesis, Skolkovo Institute of Science and Technology, (2015).
[17]    Union for Coordination of Transmission of Electricity  (UCTE), “Final Report System Disturbance on 4 November 2006”, UCTE, Brussel, Belgium, www.ucte.org. (2006).
[18]    Central Electricity Regulatory Commission, “Report on the Grid Disturbance on 30th July and 31st
Jul. 2012”, www.cercind.gov.in (2012). 
[19]    EATON. “Power Outage Annual Report 2013”, (2013).
[20]    Liu, Y. Li, Y. Sheng, M. et al., “Reliability prediction method and application in distribution system based on genetic algorithm–back-propagation neural network”, IET Gen, Trans & Dist, 13(7), pp. 984-988, (2019).
[21]    Yazdaninejadi, A. Nazarpour, D. and Talavat, V. “Optimal coordination of dual-setting directional over-current relays in multi-source meshed active distribution networks considering transient stability”, IET Gen, Trans & Dist, 13(2), p.p 157-170, (2019). 
[22]    Durand, D.  and Pieniazek, D. “Overcurrent protection & coordination for industrial applications”, 2010 Industry applications society annual meeting, (2010).
[23]    Celli, G. Pilo, F.  Pisano, G. et al., “Distribution energy storage investment prioritization with a real coded multi-objective Genetic Algorithm”, Electr. Power Syst. Res., 163, pp. 154-163, (2018). 
[24]    Yazdanpanahi, H. Xu, W. and Li, Y. “A novel fault current control scheme to reduce synchronous dg's impact on protection coordination”, IEEE Trans. Power Del., 29(2), pp. 542 - 551, (2014). 
[25]    University of Washington, Seattle, “Power Systems Test Case Archive”, Available at labs.ece.uw.edu/pstca.
[26]    Yazdaninejadi, A. Naderi, M. S. Gharehpetian, G. B. et al., “Protection coordination of directional overcurrent relays: new time current characteristic and objective function”, IET Gen, Trans & Dist, 12(1), pp. 190-199, (2018).