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Small Signal Stability Improvement of Power Systems Using Optimal Load Responses in Competitive Electricity Markets

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4 Author(s)

Since the hourly spot market price is available one day ahead in Denmark, the price could be transferred to the consumers and they may shift some of their loads from high price periods to the low price periods in order to save their energy costs. The optimal load response to an electricity price for demand side management generates different load profiles and may provide an opportunity to improve the small signal stability of power systems with high wind power penetrations. In this paper, the idea of power system small signal stability improvement by using optimal load response to the electricity price is proposed. A 17-bus power system with high wind power penetrations, which resembles the Eastern Danish power system, is chosen as the study case. Simulation results show that the optimal load response to electricity prices is an effective measure to improve the small signal stability of power systems with high wind power penetrations.

Published in:

Universities' Power Engineering Conference (UPEC), Proceedings of 2011 46th International

Date of Conference:

5-8 Sept. 2011