摘要
针对传统的电压外环电流内环双闭环控制时需要多个PI控制器、PI控制参数难以调节以及自适应差等问题,阐述了反馈线性化控制方法基本原理,分析了该方法提高D-STATCOM动态性能的机理,建立了D-STATCOM动态模型,提出了将D-STATCOM非线性系统精确线性化以实现原系统有功电流和无功电流的解耦控制设计方案。仿真结果表明,反馈线性化控制器具有良好的动态补偿特性,稳态性能好,能满足配电网电压控制的要求。
Aiming at the problems of the traditional double closed loop,outer voltage loop and inner current loop,for instance the demand for multi- PI controller,the difficulty in regulating PI control parameters and the low self- adaptability,this paper expounds the basic principle of feedback linearization control,analyzes the mechanism of the method to enhance the dynamic property of D- STATCOM,establishes the dynamic model of D- STATCOM,and proposes the design plan to realize decoupling control of active and reactive power current of the original system by accurately linearize D- STATCOM. The result of the simulation shows that the feedback linearization controller,which enjoys great dynamic compensation and stability,can meet the requirement of distribution network for voltage control.
出处
《黑龙江电力》
CAS
2015年第2期151-155,共5页
Heilongjiang Electric Power
