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Frequency Safety Demand and Coordinated Control Strategy for Power System with Wind Power and Energy Storage
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  • Xiangyu ZHANG,
  • Zijian Shao,
  • Yuan FU,
  • Yabo CAO
Xiangyu ZHANG
North China Electric Power University - Baoding Campus

Corresponding Author:[email protected]

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Zijian Shao
North China Electric Power University - Baoding Campus
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Yuan FU
North China Electric Power University - Baoding Campus
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Yabo CAO
North China Electric Power University - Baoding Campus
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Abstract

According to the constraints of frequency safety indices, rationally utilizing the energy reserve provided by wind power and energy storage to meet the system's frequency regulation demand is inevitable for the development of a large-scale new energy power system. Firstly, frequency response characteristics and frequency regulation safety indicators required by new energy generation systems were analyzed. Secondly, the frequency dynamic response model of the system with wind power and energy storage was established, and the extreme value time for the virtual inertia response of the system was calculated. Using the extreme time at which the frequency drop is maximum, the virtual inertia time constant of the wind-storage system was evaluated. Additionally, the system inertia and the primary frequency regulation demand were obtained considering the frequency safety indices, and a novel coordinated control strategy for wind power and energy storage to provide the required frequency support was proposed. Finally, a grid-connected wind-storage simulation system was built to verify the superiority of the proposed control strategy. The obtained results indicate that the proposed control scheme flexibly meets the system frequency safety requirements.
16 Jul 2024Submitted to IET Generation, Transmission & Distribution
19 Jul 2024Submission Checks Completed
19 Jul 2024Assigned to Editor
30 Jul 2024Review(s) Completed, Editorial Evaluation Pending
22 Aug 2024Reviewer(s) Assigned