摘要
统一潮流控制器(UPFC)是灵活交流输电系统(FACTS)的重要组件之一。采用UPFC的注入功率模型,在原有的状态估计算法基础上,将UPFC组件所产生的注入功率增量转移到线路两端的节点上,从而提出了计及UPFC控制约束的电力系统状态估计算法。该算法采用牛顿拉夫逊法求解UPFC组件的控制变量,状态估计方程组和控制变量方程组采用解耦法进行计算。由于方程组解耦,所以只需在原有的状态估计程序基础上增加求解UPFC组件的控制变量即可,无需对原有程序做较大修改,易于实现。IEEE14节点算例表明,该算法是有效可行的。
Unified Power Flow Controller（UPFC）is one of the most important components of the Flexible AC Transmission System（FACTS）. In this paper, power injection model is used by UPFC, based on the conventional power systems state estimation algorithm, the effect of UPFC on the power flow is transferred to the two nodes of the corresponding transmission line, put forward power systems state estimation algo- rithm with UPFC control constraint. Control variable of UPFC is calculated by Newton method in algorithm, equations set of state estimation and equations set of control variable are calculated by decoupling method. Equations set are decoupled, so based on the conventional power systems state estimation program, append solution control variable of UPFC, program need not modify more and accomplish easily. The results of IEEE14 bus demonstrate that the algorithm is effective and practical.
出处
《浙江电力》
2007年第4期5-9,共5页
Zhejiang Electric Power
关键词
统一潮流控制器
电力系统
状态估计
控制变量
解耦法
unified power flow controller（UPFC）
power system
state estimation
control variable
decoupling method
