一种新的含UPFC的电力系统潮流算法

提出了一种新的UPFC功率注入模型。基于该模型,推导了含UPFC的电网潮流方程,提出了一种新的算法来求解含UPFC的电网潮流问题。该算法基于快速解偶法(FDLF),包含了两个交替迭代过程,继承了快速解偶法的基本特性,雅可比矩阵在迭代过程中保持对称、定常。此外,采用该潮流计算模型可以直接方便地得到UPFC控制变量的较佳初始条件,有利于算法的收敛。通过实例的计算和比较,最后验证了算法的可靠、快速和准确。

FTA-based fault chains monitoring research in power system

A new and versatile power injection model for the unified power flow controller(UPFC) is presented in this paper.Based on the model,the load flow equations of power system in which the UPFCs are embedded and derived.The new algorithm is developed based on the fast decoupled load flow(FDLF).In the method,Jacobian matrix keeps constant during the iterative process and two sequential iterative process are required.In addition,to retain the basic properties of the FDLF technique,the method provides comparatively good initial conditions of UPFC control variables directly and simply.The numerical examples indicate that the proposed algorithm is reliable,efficient and accurate.