[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5370/JEET.2007.2.2.152

Real-Time Volt/VAr Control Based on the Difference between the Measured and Forecasted Loads in Distribution Systems

Park, Jong-Young (Electric Power System & Economics Lab., Seoul National University)
Nam, Soon-Ryul (Next-Generation Power Technology Center (NPTC) and the Department of Electrical Engineering, Myongji University)
Park, Jong-Keun (Electric Power System & Economics Lab., Seoul National University)

Publication Information

Journal of Electrical Engineering and Technology / v.2, no.2, 2007 , pp. 152-156 More about this Journal

Abstract

This paper proposes a method for real-time control of both capacitors and ULTC in a distribution system to reduce the total power loss and to improve the voltage profile over the course of a day. The multi-stage consists of the off-line stage to determine dispatch schedule based on a load forecast and the on-line stage generates the time and control sequences at each sampling time. It is then determined whether one of the control actions in the control sequence is performed at the present sampling time. The proposed method is presented for a typical radial distribution system with a single ULTC and capacitors.

Keywords

Capacitor; Load forecast; Real-time control; Under-load tap changer (ULTC);

Citations & Related Records

Reference

1	N. I. Santoso and O. T. Tan, 'Neural-net based realtime control of capacitors installed on distribution systems', IEEE Trans. Power Deliv., vol. 5, no. 1, pp. 266-272, 1990 DOI ScienceOn
2	Y. Y. Hsu and C. C. Yang, 'A hybrid artificial neural network-dynamic programming approach for feeder capacitor scheduling', IEEE Trans. Power Syst., vol. 9, no. 2, pp. 1069-1075, 1994 DOI ScienceOn
3	A. Saric, M. Calovic, and M. Djucanovic, 'Neuralnet based coordinated control of capacitors and ULTC transformer in daily operation of radial distribution systems', Elect. Power Syst. Res., vol. 43, pp. 169-177, 1997 DOI ScienceOn
4	Z. Hu, X. Wang, H. Chen and G. Taylor, 'Volt/VAr control in distribution systems using a time-interval based approach', IEE Proc. Gener. Transm, Distrib., vol. 150, no. 5, pp. 548-554, 2003 DOI ScienceOn
5	R. Liang and C. Cheng, 'Dispatch of main transformer ULTC and capacitors in a distribution system', IEEE Trans. Power Deliv., vol. 16, no. 4, pp. 626-630, 2001
6	Y. Liu and X. Qui, 'Optimal reactive power and voltage control for radial distribution system', Proc. IEEE PES Summer Meeting, vol. 1, pp. 85-90, 2000
7	F. Lu and Y. Hsu, 'Reactive power/voltage control in a distributions substation using dynamic programming', IEE Proc. Gener. Transm. Distrib., vol. 142, no. 6, pp. 636-645, 1995