复杂电力系统中加入控制器时阻尼的分配

对含有发电机、交直流混合输电线路、TCSC和三种控制器(PSS、DCM和TCSC附加阻尼控制)的电力系统建立线性化模型,并用此模型对单机和四机两例进行分析计算,研究其中一种控制器在另外两个控制器存在于系统时,加入系统的阻尼分配情况,得出结论:加入的阻尼大部分分配给该控制器本身环节对应的模式,小部分分配给系统的其它模式;不同控制器可使不同的非机电模式阻尼转化为机电模式阻尼;PSS安装在不同的地点、TCSC引用不同的机组Δω信号,对于DCM和TCSC加入阻尼的分配趋势无影响;PSS安装在不同的励磁机组上,对于

Assignment of damping added into system by controllers in complex electric power system

A linear model of power system,which is composed of generators,AC-DC line,TCSC and three controllers ( PSS,DCM and damping controller of TCSC ) is established to compute and analyse two examples that are one-machine system and four-machine system. The assignment of damping added into system by one controller when the other two have been in the system is researched,and the conclusion is reached. Most of the damping added into system by one controller is assigned to its own modes, the rest is assigned to the other modes. Different controller could transfer the damping from different non-electromechanical modes into electromechanical modes, different installation of PSS and different signal of damping controller of TCSC have no influence to the assignment of damping added into system by DCM and damping controller of TCSC. However, the different installation of PSS could affect the assignment of damping added into by PSS itself.