Quantitative analysis of frequency characteristics of new energy power system considering grid-structured energy storage
The grid-structured energy storage can replace the synchronous generator to realize the active support of the power grid,and has a broad application prospect in the construction of new energy power system in the future.A quantitative analysis method of frequen-cy characteristics of new energy power system considering large-scale grid-structured energy storage was proposed.Firstly,the active power-frequency coupling relationship under the participation of grid-structured energy storage in frequency regulation was analyzed,and the frequency response model of new energy power system with grid-structured energy storage frequency response was established.Sec-ondly,based on the system frequency response model,the frequency characteristics of the system steady-state frequency error,the initial frequency change rate and the maximum frequency deviation were solved and quantitatively analyzed.Finally,the IEEE39 node system was used for simulation.It was verified that the method proposed can effectively and quantitatively analyze the frequency characteristics of power system under large-scale grid-structured energy storage.It can provide guidance for the safe and stable operation and control of frequency under the background of new energy power system.
grid-structured energy storageactive power-frequency couplingfrequency response modelquantitative analysis of frequency characteristics
万方数据
维普
