System Flexibility-Oriented Optimized Unit Operation in Wind Farms

doi:10.11930/j.issn.1004-9649.202108097

Abstract

Abstract: Among all existing wind power optimization operation models, only few of them apply operation strategies involving the optimization of internal units in wind farms. Moreover, most wind power units participate in the system dispatching as "passive" role, overlooking the potential capability of wind power itself to provide flexibility. With regards to this issue, this paper proposes a new method for the optimal operation of units in wind farms that can provide system flexibility. First, the authors analyze the flexible resources and flexibility requirements of wind farms from both the supply side and the load side, explore the feasibility of wind power as a flexible resource, and then establish the system flexibility model respectively. Secondly, based on their operating characteristics, the wind turbines, are classified using FCM classification algorithm in terms of their flexibilities such that the equivalent virtual power dispatch model of the units are established. Then an optimal operation model of wind farm units is constructed to provide system flexibility by which the optimal generation output plan of the wind farm is obtained while minimizing the damage to the wind farm units. Finally, taking a wind farm as an example, the correctness and effectiveness of the method is verified through the revised IEEE standard testing system.

Key words: new energy grid connection, wind power flexibility, wind turbines classification, optimized operation, virtual power

LI Qian, GOU Luyang, LI Fan, ZHANG Anan, ZHENG Yadi, ZHOU Xipeng. System Flexibility-Oriented Optimized Unit Operation in Wind Farms[J]. Electric Power, 2022, 55(8): 23-30.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202108097

https://www.electricpower.com.cn/EN/Y2022/V55/I8/23

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