基于多变量模糊逻辑控制的风储联合系统一次调频策略  

Primary Frequency Modulation Strategy for Wind-storage Combined System Based on Multivariable Fuzzy Logic Control

作　　者：商侨晏 李凤婷[1] 王森 李源 尹纯亚 SHANG Qiaoyan;LI Fengting;WANG Sen;LI Yuan;YIN Chunya(College of Electrical Engineering,Xinjiang University,Urumqi 830017,Xinjiang Uyghur Autonomous Region,China;State Grid Zhejiang Longyou Power Supply Co.,Ltd.,Quzhou 318000,Zhejiang Province,China)

机构地区：[1]新疆大学电气工程学院,新疆维吾尔自治区乌鲁木齐市830017 [2]国网浙江省电力有限公司龙游供电公司,浙江省衢州市318000

出　　处：《电网技术》2023年第6期2344-2352,共9页Power System Technology

基　　金：国家自然科学基金项目(51877185);新疆维吾尔自治区重点研发专项项目(2022B01016)。

摘　　要：在风电场中配置储能系统构成风储联合系统可有效提高对电网主动支撑能力,在满足电网一次调频需求的同时还可以提高风电利用率,增加风电场的经济效益。以双馈风机(double fed induction generator,DFIG)与超级电容储能为例,基于不同风速下DFIG参与调频能力,提出了一种风储联合系统参与电网一次调频的控制策略。考虑风速、频差变化率和频率偏差3个因素设计多变量模糊逻辑控制器,实现风储功率的合理调配,根据储能系统的荷电状态(state of charge,SOC)动态设置DFIG调频备用容量,提升不同风况下风储联合系统的一次调频能力。最后,在MATLAB/Simulink仿真平台对所提策略有效性进行验证,结果表明,所提策略在提升风储联合系统一次调频能力的同时,实现了风储调频功率的合理分配,减少了弃风及风机出力振荡风险,改善了系统的频率稳定性。The introduction of a energy storage system into the wind farm to form a wind storage combined system may effectively improve the ability of active support to the power grid.While meeting the primary frequency modulation demand,this new system also improves the utilization rate of the wind power and increase the economic benefits of the wind farm.The paper,taking the double fed induction generator(DFIG)and the supercapacitor energy storage as examples,proposes a control strategy of the wind storage combined system participating in primary frequency modulation based on the ability of the frequency modulation of the DFIG under different wind speeds.Considering the three factors of the wind speed,the frequency change rate and the frequency deviation,the multivariable fuzzy logic controller is designed to realize the reasonable distribution of the wind storage power.In addition,the dynamic spare capacity of the DFIG participating in the frequency modulation is configured according to the states of charge(SOC)of the energy storage system.So the primary frequency modulation capability of the wind storage combined system under different wind conditions is improved.Finally,the effectiveness of the proposed strategy is verified on the MATLAB/Simulink simulation platform.The results show that the proposed strategy not only improves the primary frequency modulation capability of the wind storage combined system,but also realizes the reasonable distribution of the wind storage frequency modulation power,which solves the problems of wind abandonment and wind turbine output oscillation,improving the frequency stability of the system.

关 键 词：风储联合系统 一次调频 备用容量 风况 模糊逻辑控制 荷电状态 

分 类 号：TM614[电气工程—电力系统及自动化]