Evaluation of the Voltage Stability of a Radial Distribution System having V2G Facilities

Uwakwe C. Chukwu^1, and Satish M. Mahajan²

¹Department of Industrial & Electrical Engineering Technology of South Carolina State University, U.S.A.

²Electrical and Computer engineering, Tennessee Technological University, Cookeville, TN, U.S.A.

Cite this paper:
Uwakwe C. Chukwu and Satish M. Mahajan. Evaluation of the Voltage Stability of a Radial Distribution System having V2G Facilities. International Transaction of Electrical and Computer Engineers System. 2014; 2(3):98-106. doi: 10.12691/iteces-2-3-4

Abstract

The penetration of V2G into the distribution system is expected to impact the way power systems are being operated. Voltage instability in the distribution system is a growing problem, and is associated with rapid voltage drops due to heavy load demand that may occur during uncoordinated and simultaneous charging of V2G units during peak hours of a typical day. This is a pressing issue since the next generation electric distribution system may exhibit a high level of volatility due to V2G penetration. In this paper, the impact of V2G parking lots on voltage stability of a radial distribution network is investigated. IEEE 13 Node test feeder network was modeled in the RDAP. Load flow results were applied to the voltage stability index. Results show that for a given penetration level, 3-phase and system-wide V2G integration results in an improved voltage stability than a 1-phase V2G integration. Results also indicate that using V2G parking lots to inject reactive power will have an improved impact on the voltage stability of the system than injecting a real power into the system. These results could be useful for real-time applications as well as for power system operators and planners dealing with an increasing influx of V2Gs in the distribution system.

Keywords:
radial distribution smart-grid power demand/injection voltage collapse voltage stability V2G

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References:

[1]	Saber, A.Y., Venayagamoorthy, G.K., “Optimization of vehicle-to-grid scheduling in Constrained parking lots.” PES GM, pp.1-8. 2009.
[2]	M. Duvall. “Comparing the Benefits and Impacts of Hybrid Electric Vehicle Options for Compact Sedan and Sport Utility Vehicles, EPRI, Palo Alto, CA, Final Report 1006892. 2002.
[3]	V. Ajjarapu and B. Lee. “Bibliography on voltage stability, IEEE Trans. on power systems,” Vol. 13, pp. 115-125, 1998.
[4]	T. Gonen, “Electric Power Distributed System Engineering,” 2nd Ed. New York: McGraw-Hill, pp. 414-435, 1987.
[5]	P. Nagendra, T. Datta, S. Halder and S. Paul. “Power system stability assessment using Network Equivalents- A Review,” Journal of applied sciences, Vol. 10, Iss 18, pp. 2147-2153, 2010.
[6]	P. Kundur. Power system stability and control, McGraw-Hill, 1st Ed.
[7]	B. Gao, G. K. Morison, and P. Kundur. “Voltage stability evaluation using Modal analysis,” IEEE trans. on power systems, Vol. 7, Iss 4, pp. 1529-1542, 1992.
[8]	V. Ajjarapu and C. Christy, “The continuation power flow: A tool for steady State voltage stability analysis,” IEEE Trans on power systems, 7(1), pp. 416-423, 1992.
[9]	C. A. Canizares. Voltage stability assessment: concepts, practices & tools. IEEE-PES Power systems stability subcommittee publication.
[10]	D.O. Dike, S.M. Mahajan, “Utilization of L-index in microgrid interconnected power system network, proceedings of the IEEE PES GM, 1-6, 2008.
[11]	P. Aravindhababu and G. Mohan “Optimal Capacitor Placement for Voltage Stability Enhancement in Distribution Systems,” ARPN Journal of Engineering and Applied Sciences Vol. 4, No. 2, 88-92, 2009.
[12]	M. H. Haque, “A linear static voltage stability margin for radial distribution systems,” in Proc. IEEE PES GM, Quebec pp. 1-6, 2006.
[13]	[Online]http://www.ewh.ieee.org/soc/pes/dsacom/testfeeders.html.
[14]	G. Mohan and P. Aravindhababu. Load shedding Algorithm for avoiding Voltage instability in distribution systems, Int. J. of Power Engineering and Green Technology (IJPEGT), Vol. 1. Iss. 1, pp. 39-45. 2010.