Voltage and reactive power control in a distribution network considering optimal network configuration and voltage security constraints

Document Type : Research Note


Department of Electrical Engineering, Shahid Bahonar University of Kerman, Postal code: 7616914111, Kerman, Iran


In order to reduce energy losses and improve voltage stability index in distribution system, two different approaches have been proposed and employed including voltage and reactive power control (volt/var control) and distribution network reconfiguration. In the present paper, volt/var control and network reconfiguration in distribution system considering voltage security constraints is modelled as a multi-objective optimization problem. Total electrical energy losses, voltages deviations and voltage stability have been considered as objectives. Also, a new method for distribution network reconfiguration has been utilized for implementation of these two problems simultaneously. In this way, the two problems can be solved in less time. In addition, different nature of loads in each bus is considered in network load modelling. Non-dominated sorting genetic algorithm-II is used to solve this problem. Finally, the effectiveness of the proposed method is evaluated by implementation on the IEEE 33-bus system and a real 77-bus distribution system.


Main Subjects

1. Meamarzadeh, Gh., Esmaeili, S., and Mohamadi Abdar, H. "Daily volt/var control in distribution system in presence of distributed generators considering voltage security constraints", 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Cleveland, Ohio, USA, pp. 59-68 (2014).
2. Manbachi, M., Farhangi, H., Palizban, A., and Arzanpour, S. "A novel volt-var optimization engine for smart distribution networks utilizing vehicle to grid dispatch", Int J Elec Power, 74, pp. 238-251 (2016).
3. Jashfar, S. and Esmaeili, S. "Volt/var/THD control in distribution networks considering reactive power capability of solar energy conversion", Int J Elec Power, 60(1), pp. 221-233 (2014).
4. Resener, M., Haffner, S., Pereira, L., et al. "Mixedinteger LP model for volt/var control and energy losses minimization in distribution systems", Electr Pow Syst Res, 140(1), pp. 895-905 (2016).
5. Sayadi, F., Esmaeili, S., and Keynia, F. "Two-layer volt/var/total harmonic distortion control in distribution network based on PVs output and load forecast errors", IET Gener Transm Dis, 11(8), pp. 2130-2137 (2016).
6. Niknam, T., Zare, M., and Aghaei, J. "Scenariobased multiobjective volt/var control in distribution networks including renewable energy sources", IEEE T Power Deliver, 27(4), pp. 2004-2019 (2012).
7. Niknam, T., Bahmani Firouzi, B., and Ostadi, A. "A new fuzzy adaptive particle swarm optimization for daily volt/var control in distribution networks considering distributed generators", Appl Energ, 87(6), pp. 1919-1928 (2010).
8. Zare, M. and Niknam, T. "A new multi-objective for environmental and economic management of volt/var control considering renewable energy resources", Energy, 55(1), pp. 236-252 (2013).
9. Azimi, R. and Esmaeili, S. "Multi-objective daily volt/var control in distribution systems with distributed generation using binary ant colony optimization", Turk J Electr Eng Co, 21(3), pp. 613-629 (2013).
10. Liang, R.H., Chen, Y.K., and Chen, Y.T. "Volt/var control in a distribution system by a fuzzy optimization approach", Int J Elec Power, 33(2), pp. 278-287 (2011).
11. Ulinuha, A., Masoum, M.A.S., and Islam, S. "Hybrid genetic-fuzzy algorithm for volt/var/total harmonic distortion control of distribution systems with high penetration of non-linear loads", IET Gener Transm Dis, 5(4), pp. 425-439 (2011).
12. Niknam, T. "A new HBMO algorithm for multiobjective daily volt/var control in distribution systems considering distributed generators", Appl Energ, 88(3), pp. 778-788 (2011).
13. Tushar, M.H.K. and Assi, CH. "Volt-var control through joint optimization of capacitor bank switching, renewable energy, and home appliances", IEEE Trans. Smart Grid, 9(5), pp. 4077-4086 (2017).
14. Sabillon-Antunez, C.F., Melgar-Dominguez, O.D., Franco, J.F., et al. "Volt-var control and energy storage device operation to improve the electric vehicle charging coordination in unbalanced distribution networks", IEEE Trans. Sustain. Energy, 8(4), pp. 1560- 1570 (2017).
15. Malekpour, A.R., Tabatabaei, S., and Niknam, T. "Probabilistic approach to multi-objective volt/var control of distribution system considering hybrid fuel cell and wind energy sources using improved shuffled frog leaping algorithm", Renew Energ, 39(1), pp. 228- 240 (2012).
16. Merlin, A. and Back, H. "Search for a minimumloss operating spanning tree configuration for an urban power distribution system", Proc. Power Systems Comp. Conf., Cambridge, UK, pp. 1-5 (1975).
17. Civanlar, S., Grainger, J.J., Yin, H., et al. "Distribution feeder reconfiguration for loss reduction", IEEE T Power Deliver, 3(3), pp. 1217-1223 (1988).
18. Zhu, J.Z. "Optimal reconfiguration of electrical distribution network using the refined genetic algorithm", Electr Pow Syst Res, 62(1), pp. 37-42 (2002).
19. Gupta, N., Swarnkar, A., and Niazi, R. "Distribution network reconfiguration for power quality and reliability improvement using genetic algorithms", Int J Elec Power, 54(1), pp. 664-671 (2014).
20. Abazari, S. and Heidari Soudejani, M. "A new technique for efficient reconfiguration of distribution networks", Sci Iran, 22(6), pp. 2516-2526 (2015).
21. Farahani, V., Vahidi, B., and Askarian Abyaneh, H. "Reconfiguration and capacitor placement simultaneously for energy loss reduction based on an improved reconfiguration method", IEEE T Power Syst, 27(2), pp. 587-595 (2012).
22. Zhao, J., Li, X., Hao, J., et al. "Reactive power control of wind farm made up with doubly fed induction generators in distribution system", Electr Pow Syst Res, 80(1), pp. 698-706 (2010).
23. Srinivasa Rao, R., Ravindra, K., Satish, K., et al. "Power loss minimization in distribution system using network reconfiguration in the presence of distributed generation", IEEE T Power Syst, 28(1), pp. 317-325 (2013).
24. Chakravorty, M. and Das, D. "Voltage stability analysis of radial distribution networks", Int J Elec Power, 23(2), pp. 129-135 (2001).
25. Jashfar, S., Hosseini-Biyouki, M.M., and Esmaeili, S. "A stochastic programming to volt/var/total harmonic distortion control in distribution networks including wind turbines", Electr Pow Compo Sys, 43(7), pp. 733-746 (2015).