Abstract
Under the background of energy Internet, a high proportion of renewable energy is connected to the power system, and its volatility and randomness make the flexibility of the power system itself increasingly important in dealing with the fluctuation of net load. In order to evaluate the limit capacity of renewable energy consumption under the given power structure and the future absorption prospect of regional power grid, a renewable energy evaluation model considering the effect of frequency regulation is proposed in this paper. This method fully considers the role of frequency regulation in dealing with the uncertainty of renewable energy, establishes the absorption index from the perspective of absorption capacity and absorption efficiency, and comprehensively evaluates the absorption capacity of renewable energy from the perspective of frequency modulation, slope climbing and other time scales. Finally, the model is verified by a ten-machine system.
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