双机三节点风电系统的Hopf分岔分析与控制  

Analysis and Control on Hopf Bifurcation of Wind Power System Based on Two-machine and Three-bus model

作　　者：李鹏松[1] 孟永永 刘琦[1] 

机构地区：[1]东北电力大学理学院,吉林吉林132012

出　　处：《东北电力大学学报》2015年第6期39-44,共6页Journal of Northeast Electric Power University

基　　金：吉林省科技发展计划项目(批准号:20130101065JC)

摘　　要：将双机三节点模型接入风电场,来揭示风电并网运行系统的分岔现象和失稳机理,其中发电机为IEEE型双轴发电机.利用中心流形理论与后继函数法,研究系统的Hopf分岔类型,并对系统施加非线性控制器,根据规范性理论,将具有潜在威胁的亚临界Hopf分岔控制为超临界Hopf分岔;理论分析结果与数值模拟结果一致,验证了控制方法的有效性。In this paper,combined with wind power model,the two-machine and three-bus model is simulated to reveal the bifurcation phenomena and mechanism of voltage instability in which the generator is dual-excited synchronous generators.Then,we investigate the Hopf bifurcation type of wind power system by the combining the center manifold theory with the subsequent function method. According to the theory of Normal Form,we design one effective nonlinear controller which can change the potential threat subcritical Hopf bifurcation to a supercritical Hopf bifurcation.The theoretical analysis and the numerical simulation results are consistent and example shows that the control method is valid.

关 键 词：HOPF分岔 电力系统 电压稳定性 非线性控制器 

分 类 号：TM712[电气工程—电力系统及自动化] O193[理学—数学]