Research on Coordinated Control Technology of Energy Storage Based on Fast Frequency and Voltage Regulation
To improve the efficiency of energy storage station output and solve the smoothing problem caused by the sudden change of load,the coordinated control technology of energy storage based on fast frequency and voltage regulation is proposed.Between the power grid and the energy storage station,the fast frequency and voltage regulation coordination equipment is embedded to realize the fast optimization and coordination of the power output of the power grid and the energy storage station.The voltage and current at the grid connection point are collected in real-time,and the frequency and line voltage at the grid connection point are calculated.When the frequency and line voltage exceed the rated value,it actively implements active and reactive power regulation,and tracks the rate of change of the frequency of the grid connetion point to actively implement inertia regulation,detects oscillations and actively initiates harmonic suppression regulation and other functions.Through fast upstream and downstream linkage and local logic adjustment,the technology can achieve the purpose of quickly adjusting the output of the energy storage station and stabilizing the power grid.Test results show that this technology can efficiently complete the power conversion system output collaboration and has a broad application prospect in the field of large-scale energy storage.
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