摘要
电力系统中,风电占比的不断提高导致系统频率调节能力日益恶化,这对系统频率稳定性构成巨大挑战。针对上述问题,该文提出基于Hamilton方法的风电参与电网调频控制策略。首先,基于风电机组通过有功出力变化参与系统频率响应原理,构建包含风电在内的系统频率响应模型;其次,根据Hamilton系统控制理论将上述模型转换为耗散Hamilton系统模型标准形式,并利用稳态频率偏差表达式得到随负荷扰动自适应调整的期望平衡点;最后,结合系统当前及期望状态,利用能量成型方法构建能量匹配方程,得到输出反馈控制率,在此基础上根据系统控制变量进行逆向推导可得到风机有功控制率。通过MATLAB/Simulink搭建含风电系统进行仿真验证,结果表明,Hamilton方法控制策略能够有效改善系统频率响应特性,提高系统的频率稳定性。
With the increasing proportion of wind power in the power system,the frequency regulation ability of the system is deteriorating,which poses a great challenge to the frequency stability of the system.In view of the above problems,this paper proposes a control strategy of wind power participating in grid frequency regulation based on Hamilton method.First,based on the principle that the wind turbine participates in the system frequency response through the change of active power output,the system frequency response model including wind power is constructed.Then,according to the Hamilton system control theory,the above model is transformed into the standard form of the dissipative Hamilton system model,and the expected equilibrium point adaptively adjusted with the load disturbance is obtained by using the steady-state frequency deviation expression.Finally,combined with the current and expected state of the system,the energy matching equation is constructed by using the energy shaping method,so as to obtain the output feedback control rate.On this basis,the active power control rate of the wind turbine can be obtained by reverse derivation according to the system control variables.The wind power system is built by MATLAB/Simulink for simulation verification.The results show that the Hamilton method control strategy can effectively improve the frequency response characteristics of the system as well as the frequency stability of the system.
作者
聂永辉
王浩宇
孙灵芳
曲广强
陈腾
NIE Yonghui;WANG Haoyu;SUN Lingfang;QU Guangqiang;CHEN Teng(School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,Jilin Province,China;School of Automation Engineering,Northeast Electric Power University,Jilin 132012,Jilin Province,China;Academic Administration Office,Northeast Electric Power University,Jilin 132012,Jilin Province,China)
出处
《中国电机工程学报》
北大核心
2025年第23期9190-9201,I0010,共13页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
吉林省科技发展计划项目(20240304157SF)。
