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高风电渗透率下考虑系统风电备用容量的储能配置

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风电的高比例渗透削弱了电力系统的惯性与调频容量,储能凭借响应迅速、出力稳定等特点被广泛应用于电网的惯量支撑及频率调节工作.首先以双馈风机额定转速与有功出力为约束条件,基于转子超速控制设置最适功率预留系数,划分风机参与系统调频的风速范围.在此基础上,考虑系统频率支撑能力,提出一种风电机组与储能协调配合的调频方法.通过对储能有功出力与系统稳态恢复过程的分析,刻画了虚拟同步机控制策略下储能系统的动态频率调节特性,由此实现储能在应对系统不同工况与不同支撑需求下控制参数的最优配置.仿真结果表明,所提方法能够在保证系统调频需求的同时充分利用风电自身的调频容量,优化储能系统参数的配置结果,实现储能出力的平滑输出,提高系统的频率支撑能力.
Energy Storage Configuration Considering the System Wind Power Reserve Capacity Under High Wind Power Permeability
The high proportion penetration of the wind power weakens the inertia and frequency regulation capacity of the power system.The energy storage system(ESS)is widely used in the inertia support and frequency regulation of the power grid with the characteristics of rapid response and stable output.Firstly,the rated speed and active power output of the doubly fed induction generator(DFIG)were taken as constraint conditions,and the optimal power reservation coefficient was set based on the rotor overspeed control to divide the wind speed range of the DFIG participating in the system frequency modulation.On this basis,considering the frequency support capacity of the system,a coordinated frequency modulation method of the DFIG and the ESS was proposed.Based on the analysis of the ESS active power output and system steady-state recovery process,the dynamic frequency regulation characteristics of the ESS under the control strategy of the virtual synchronous machine were described,so as to realize the optimal configuration of the control parameters of the ESS under different working conditions and different support requirements.Simulation results show that the proposed method can make full use of the frequency modulation capacity of the DFIG while ensuring the frequency modulation requirements of the system,optimize the configuration results of the ESS parameters,realize the smooth output of the ESS,and improve the frequency support ability of the system.

wind power generationenergy storage systemdoubly fed induction generatorrotor overspeed controlvirtual synchronous generatorpower reserve coefficient

刘洪波、刘永发、任阳、孙黎、刘珅诚

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现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林省 吉林市 132012

风力发电 储能系统 双馈风机 转子超速控制 虚拟同步发电机 功率预留系数

国家电网总部管理科技项目

5100-202226021A-1-1-ZN

2024

10.12096/j.2096-4528.pgt.22128

发电技术
华电电力科学研究院

发电技术

CSTPCD
影响因子：0.388
ISSN：2096-4528
年,卷(期)：2024.45(2)
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