Optimum Load Shedding in Power System Strategies with Voltage Stability Indicators

P.V. RAJ, M. SUDHAKARAN

.

DOI: 10.4236/eng.2010.21002                

Abstract

An optimal load shedding strategy for power systems with optimum location and quantity of load to be shed is presented in this paper. The problem of load shedding for avoiding the existence of voltage instability in power systems is taken as a remedial action during emergency state in transmission and distribution sector.Optimum location of loads to be shed is found together with their optimum required quantity. L-Indicator index is in used for this purpose with a modified new technique. Applications to be standard 6 bus Ward-Hale test system and IEEE – 14 bus system are presented to validate the applicability of the proposed technique to any system of any size.

Keywords

Load Shedding, Voltage Instability, Power systems, Transmission and Distribution Power system

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	C. W. Taylor, “Concept of under voltage load shedding for voltage stability,” IEEE transactions on Power Delivery, Vol. 7, No. 2, pp. 480–488, 1992
[2]	S. A. Niern berg, D. A. Meinnis, and K. D. Sparks, “Fast acting load shedding,” IEEE Transactions on Power Systems, Vol. 7, No. 2, pp. 873–877, 1992.
[3]	P. Kessel and H. Glavitsch, “Estimating the voltage stability of a power system,” IEEE Transactions on Power Delivery, Vol. 1, No. 3, pp. 346–354, 1986,
[4]	T. Quoc Taun, J. Fandino, N. Hadjsaid, and J. C. sabonnadiere, H. Vu, “Emergency load shedding to avoid risks of voltage instability using indicators,” IEEE Transactions on Power Systems, Vol. 9, No. 1, pp. 341–351, 1994.
[5]	T. Quoc Taun, J. Fandino, N. Hadjsaid, and J. C. sabonnadiere, “Fast calculation of indicators of risk of voltage instability,” Proc .of 27th Universities Power Engineering Conference, UPEC–92 , pp. 612–615, 1992.
[6]	C. W. Taylor, “Power system voltage stability,” Mc.Graw Hill, 1993.
[7]	L. P. Hajdu, J. Peschon, W. F. Tinney, and D. S. Piercy, “Optimum load-shedding policy for power system,” IEEE Tran, PAS-87, No. 3, pp. 784–794, 1968.
[8]	D. K. Subramanian, “Optimum load shedding through programming techniques,” IEEE Trans, PAS-90, pp. 89–94, 1971.
[9]	S. M. Chan and F. C. Schweppe, “A generation rellocation and load shedding algorithm,” IEEE Trans., PAS-98, No. 1, pp. 26–34, 1979.
[10]	M. M. Adibi and D. K. Thorne, “Local load shedding,” IEEE Trans. On Power System, Vol. 3, No. 3, pp. 1220–1226, 1988.
[11]	S. Shah and S. M. Shahldehpour, “A heuristic approach to load shedding scheme,” IEEE Trans, on Power System, Vol. 4, No. 4, pp. 1421–1429, 1989.
[12]	R. Billinton and J. Satish, “Effect of rotational load shedding on overall power system adequacy indices,” IEE Proc. C, Vol. 143, No. 2, pp. 181–187, 1996.
[13]	P. Wang and R. Billinton, “Optimum load-shedding technique to reduce the total customer interruption cost in a distribution system,” IEE Proc. - Gener. Transm. Distrib., Vol. 147, No. 1, pp. 51–56, 2000.
[14]	D. Xu and A. A. Girgis, “Optimal Load Shedding Strategy in Power Systems with Distributed Generation,” IEEE, pp. 788–793, 2001.
[15]	Y. Lu, W. S. Kao, and Y. T. Chen, “Study of applying load shedding scheme with dynamic d-factor values of various dynamic load models to taiwan power system,” IEEE Transactions on Power Systems, Vol. 20, No. 4, pp. 1976–1984, 2005.
[16]	R. Faranda, A. Pievatolo, and E. Tironi, “Load shedding: A new proposal,” IEEE Transactions on Power Systems, Vol. 22, No. 4, pp. 2086–2093, 2007.
[17]	A. Wiszniewski, “New criteria of voltage stability margin for the purpose of load shedding,” IEEE Transactions on Power Delivery, Vol. 22, No. 3, pp. 1367–1371, 2007.
[18]	Z. P. Ding, S. K. Srivastava, D. A. Cartes, and S. Suryanarayanan, “Dynamic simulation-based analysis of a new load shedding scheme for a notional destroyer-class shipboard power system,” IEEE Transactions on Industry Applications, Vol. 45, No. 3, pp. 1163–1174, 2009.
[19]	E. J. Thalassinakis, E. N. Dialynas, and D. Agoris, “Method combining anns and monte carlo simulation for the selection of the load shedding protection strategies in autonomous power systems,” IEEE Transactions on Power Systems, Vol. 21, No. 4, pp. 1574–1582. 2006.