摘要
链式静止同步补偿器(STATCOM)及其分相电流控制策略是解决系统和负载不平衡问题的常用方法。文中在分析链式STATCOM数学模型的基础上,提出采用比例谐振控制器来对分相电流进行跟踪控制,并给出应用闭环系统根轨迹来选择控制器参数的设计方法,该设计方法可以使得电流内环闭环系统不仅满足稳定性要求,同时具有良好的动态性能。最后通过PSCAD/EMTDC仿真验证了基于根轨迹法的比例谐振控制器参数设计的正确性和电流内环采用PR控制的优越性。
Chained static synchronous compensator and its phase current control is a common method for the unbalanced problem of power grid and load. This paper proposes a method to employ proportion-resonance integration to trace phase current. Also, a design method for controller parameters selection using closed loop system＇s root locus, which can not only meet the stability requirement of current inner loop＇s closed loop system, but also have excellent dynamic performance is provided based on the mathematic model of STATCOM. Finally, PSCAD/EMTDC Simulation results verify the correctness of proportion-resonance integration controller＇s parameter selection method based on root locus method.
出处
《江苏电机工程》
2015年第2期1-4,9,共5页
Jiangsu Electrical Engineering
基金
国家电网公司重大科技示范项目(52110113090U)
