双馈风机附加阻尼控制环节与PSS的参数协调优化  

Study on Parameter Coordination and Optimization of DFIG Auxiliary Damping Controlling Unit and PSS

作　　者：郑华[1] 李忠 陈凡[3] 

机构地区：[1]国电南京自动化股份有限公司,江苏南京210032 [2]南京灿能电气自动化有限公司,江苏南京211100 [3]安徽省电力科学研究院,安徽合肥230601

出　　处：《江苏电机工程》2015年第3期25-29,共5页Jiangsu Electrical Engineering

基　　金："十二五"国家科技支撑计划项目(2011BAA01B02)

摘　　要：对于含双馈风电场的多机电力系统,在双馈风机内部引入附加阻尼控制环节可以抑制系统低频振荡,但双馈风机附加阻尼控制环节可能会影响电力系统稳定器(PSS)抑制低频振荡的效果。提出了一种双馈风机附加阻尼控制环节与PSS的参数协调优化方法,设计了兼顾机电振荡模式和非机电振荡模式的阻尼特性的优化目标函数,并给出了基于粒子群算法的求解方法。以三机系统作为算例,优化设计了双馈风机附加阻尼控制环节与PSS的参数。时域仿真结果表明,所提出的参数协调优化方法可以更好地提升系统的阻尼,有利于低频振荡的快速平抑。Deploying auxiliary damping controlling unit in douly-fed induction generator （DFIG） is an effective way to suppress the low frequency oscillations in the multi-machine system with large-scale wind farms. However, auxiliary damping controlling unit in DFIG may reduce the positive damping provided by PSS. In this paper, a parameter coordination and optimization method for auxiliary damping controlling unit and PSS is proposed. Both electromechanical and non-electromechanical modes are considered in the objective function, and a calculation method based on the PSO is proposed. The three-machine system is taken for performance analysis, and the parameter of auxiliary damping controlling unit and PSS is designed. Time-domain simulation results show that the method can improve the performance of damping low frequency oscillation.

关 键 词：双馈风机 低频振荡 附加阻尼控制 PSS 协调优化 粒子群算法 

分 类 号：TM712[电气工程—电力系统及自动化]