基于Normal Form方法的UPFC多个功能控制器间交互影响分析

统一潮流控制器(UPFC)的重要特点之一就是它具有的多控制功能,包括潮流控制、电压控制和稳定性控制等等。然而时域仿真研究表明统一潮流控制器的多个控制器之间可能存在着较强的交互影响。本文研究了规范型(Normal Form)方法用于分析UPFC控制器间的交互影响问题的可能性,并引入一非线性交互指标定量地指示出控制器间的交互强弱程度。所提方法应用到新英格兰10机39节点系统,并通过时域仿真验证了所提规范型理论分析方法的有效性。

Normal Form Analysis of the Interaction Among Multi-Controller Channels of UPFC

One of the most important features of the unified power flow controller(UPFC) is its multiple control functions which are implemented by multiple control channels of UPFC.However,recent simulation studies have demonstrated that the existence of dynamic interactions among different control channels of UPFC,i.e.power flow controller,AC voltage controller and DC voltage controller.Uhis paper is concerned with the application of the Normal Form method to analyze the interactions among the multi-control channels of UPFC in power systems.Moreover,a non-linear interaction index is introduced for expressing the interactions among these UPFC controllers.The employed approach has been applied to two test systems: a single machine infinite bus power system(SMIB) and the New England test power system(NETPS).The simulation results validate the proposed approach.