Optimal Real-Time Scheduling of Wind Integrated Power System Presented with Storage and Wind Forecast Uncertainties

Yuchong Huo, Ping Jiang, Yuan Zhu, Shuang Feng and Xi Wu
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Yuchong Huo: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Ping Jiang: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Yuan Zhu: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Shuang Feng: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Xi Wu: School of Electrical Engineering, Southeast University, Nanjing 210096, China

Energies, 2015, vol. 8, issue 2, 1-21

Abstract: The volatility of wind power poses great challenges to the operation of power systems. This paper deals with the economic dispatch problems presented by energy storage in wind integrated systems. A policy iteration algorithm for deriving the cost optimal policy of real-time scheduling is proposed, taking the effect of wind forecast uncertainties into account. First, energy loss and use of fast-ramping generation are selected as the performance metrics. Then, a policy iteration algorithm is developed using the Perturbed Markov decision process. This algorithm has a two-level optimization structure in which both the long-term and short-term behaviors of real-time scheduling policy are optimized. In addition, a unified optimal storage control strategy is presented. The feasibility of the proposed methodology is demonstrated via the wind power archive of Electric Reliability Council of Texas (ERCOT). Through comparative numerical experiments, both the performance of the policy iteration algorithm in the short-term and long-term are verified and the consistency, robustness, good convergence and high computational efficiency of the proposed algorithm are also corroborated.

Keywords: energy storage; forecast error; Perturbed Markov decision process; policy iteration algorithm; real-time scheduling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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