Sine Cosine Algorithm for Loss Reduction in Distribution System with Unified Power Quality Conditioner

M. Laxmidevi Ramanaiah*, M. Damodar Reddy**
* Research Scholar, Department of Electrical and Electronics Engineering, Sri Venkateswara. University, Tirupati, Andhra Pradesh, India.
** Professor, Department of Electrical and Electronics Engineering, Sri Venkatesswara University, Tirupati, Andhra Pradesh, India.
Periodicity:August - October'2017


This paper presents a novel concept of Unified Power Quality Conditioner (UPQC). In steady state conditions, the series compensator is in idle mode and the shunt compensator is involved in reactive power compensation. This paper addresses the reactive power compensation capability of both the compensators in steady state conditions. The problem of UPQC placement is formulated as a single objective problem. UPQC allocation in the distribution system is addressed by Sine Cosine Algorithm (SCA) with the objective of minimizing the losses and improving the voltage profile. Suitable Load Flow method is applied to incorporate the complex voltage and reactive power injected by the series and shunt compensator, respectively. The proposed algorithm is tested on standard distribution systems.


Unified Power Quality Conditioner, Reactive Power Compensation, Steady State, Sine Cosine Algorithm.

How to Cite this Article?

Ramanaiah, M. L., and Reddy, M. D. (2017). Sine Cosine Algorithm for Loss Reduction in Distribution System with Unified Power Quality Conditioner. i-manager’s Journal on Power Systems Engineering, 5(3), 10-16.


[1]. Baran, M. E., & Wu, F. F. (1989a). Network Reconfiguration in Distribution Systems for Loss Reduction and Load Balancing. IEEE Transactions on Power Delivery, 4(2), 1401-1407.
[2]. Baran, M. E., & Wu, F. F. (1989b). Optimal Capacitor Placement on Radial Distribution Systems. IEEE Transactions on Power Delivery, 4(1), 725-734.
[3]. Boutebel, M., & Mokrani, K. (2014). Optimal Steady State Operation of Unified Power Quality Conditionner for Power Losses Reduction and Voltage Regulation Improvement. Journal of Electrical Engineering, 14(1), 114- 121.
[4]. Das, D., Kothari, D. P., & Kalam, A. (1995). Simple and efficient method for Load Flow Solution of Radial Distribution Networks. International Journal of Electrical Power & Energy Systems, 17(5), 335-346.
[5]. Fujita, H., & Akagi, H. (1998). The unified power quality conditioner: The integration of series-and shunt-active filters. IEEE Transactions on Power Electronics, 13(2), 315- 322.
[6]. Ganguly, S. (2014). Unified power quality conditioner allocation for reactive power compensation of radial Distribution Networks. IET Generation, Transmission & Distribution, 8(8), 1418-1429.
[7]. Gupta, A. R., & Kumar, A. (2017). Performance Analysis of Radial Distribution Systems with UPQC and D-STATCOM. Journal of The Institution of Engineers (India): Series B, 98(4), 415-422.
[8]. Hosseini, M., Shayanfar, H. A., & Fotuhi-Firuzabad, M. (2009). Modeling of unified power quality conditioner (UPQC) in Distribution Systems Load Flow. Energy Conversion and Management, 50(6), 1578-1585.
[9]. Mirjalili, S. (2016). SCA: A Sine Cosine Algorithm for solving optimization problems. Knowledge-Based Systems, 96, 120-133.
[10]. Reddy, M. D., & Reddy, V. C. (2008). A two-stage methodology of optimal capacitor placement for the reconfigured network. Indian Journal of Engineering and Material Sciences, 17, 105-112.
[11]. Taher, S. A., & Afsari, S. A. (2012). Optimal Location and Sizing of UPQC in Distribution Networks using Differential Evolution Algorithm. Mathematical Problems in Engineering, 2012.
[12]. Teng, J. H. (2003). A Direct Approach for Distribution System Load Flow Solutions. IEEE Transactions on Power Delivery, 18(3), 882-887.

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