Abstract
Energy storage including electric, gas and thermal storages, is considered as suitable equipment to improve the flexibility of integrated energy system (IES). However, the complex interaction among different energy makes IES planning difficult when the stochastic wind power is integrated. In this paper, an optimal planning method of multi-type energy storage in IES integrated uncertain wind power is proposed First, the scenario method is used to express the influence of wind power uncertainty. Second, multi-energy storage planning model is established to reflect the interaction between each energy system, and improve the flexibility of IES. The total cost containing investment, operation, loss of load and wind power curtailment costs, is minimized as the planning objective Finally, the test IES is built which coupled with IEEE-14 power, NGS-14 gas, and TS-14 thermal systems. The results demonstrate the validity and correctness of the proposed method.
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