电压稳定分析的潮流算法研究

研究了一种新型的用于电压稳定分析的潮流算法，它可充分考虑电力系统各种类型元件的模型，将常规潮流方程与动态元件的状态方程联立求解，同时解出系统中各个节点的电压、相角以及各种动态元件内部的状态变量。它考虑了系统中各种极限情况，消除了对于PV，PQ及平衡节点等的假设，使计算结果更加接近于系统的实际运行情况。采用上述潮流模型的连续潮流算法，对一个试验系统进行了电压稳定临界点的计算，并与常规潮流算法进行了比较。

STUDY ON POWER FLOW ARITHMETIC FOR VOLTAGE STABILITY ANALYSIS

A novel power flow arithmetic for voltage stability analysis is studied in this paper.It takes into account models of all elements in a power system.It solves the sim ultaneous equations,which consist of both load flow equation and state equation of dynamic elements,and simultaneously gets the voltage amplitude and phase of all buses and inner state variables of all dynamic elements.In this algorithm,differentkinds of limits are considered and the assumption of PV bus,PQ bus and slack bus are eliminated,so the result is closer to the real operation condition.Using a continuation power flow CPF method based on the above load-flow algorithm,the critical point of voltage stability of a test system is computed and compared to that by the conventional power flow method.