Optimized Energy Storage Configuration of Wind Power Integrated Power System Considering DC Regulation Capacity

doi:10.11930/j.issn.1004-9649.202107048

Abstract

Abstract: With the increasing installed capacity of wind power, stronger demand for flexible adjustment resources such as energy storage occurs in the power system, and the AC/DC hybrid power grid is the basis for the grid connection, transmission, and accommodation of large-scale wind power. Given the above background, an energy storage configuration scheme is proposed for the wind power integrated system considering the DC regulation capacity to promote the accommodation of renewable energy and reduce the investment cost of energy storage. First, a scenario analysis method is adopted to deal with the randomness of wind power and loads. Then, a DC line model with adjustable transmission power is constructed. Furthermore, combined with the constraints including energy storage configuration, energy storage operation, and AC power grid, a configuration model of energy storage based on multi-scenario stochastic optimization is built considering DC regulation capacity to minimize the total daily operating cost of the power system. Finally, a comparative analysis of multiple energy storage configuration schemes is simulated in the modified IEEE 14-bus system. The results show that the proposed scheme can promote the accommodation of wind power while lessening the demand for energy storage. As a result, the economic operation of the wind power integrated system is guaranteed.

Key words: energy storage configuration, stochastic optimization, voltage source converter, second-order cone programming, AC/DC hybrid power grid

PENG Sui, GONG Xianfu, LIU Xinmiao, LU Xun, WU Yunyun, XUE Xizhen, ZHOU Bo, AI Xiaomeng. Optimized Energy Storage Configuration of Wind Power Integrated Power System Considering DC Regulation Capacity[J]. Electric Power, 2022, 55(1): 37-45.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202107048

https://www.electricpower.com.cn/EN/Y2022/V55/I1/37

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