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\begin{document}
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\title{Frequency Safety Demand and Coordinated Control Strategy for Power
System with Wind Power and Energy Storage}



\author[1]{Xiangyu ZHANG}%
\author[1]{Zijian Shao}%
\author[1]{Yuan FU}%
\author[1]{Yabo CAO}%
\affil[1]{North China Electric Power University - Baoding Campus}%


\vspace{-1em}



  
  \date{April 25, 2026}


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\begin{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.%
\end{abstract}%



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