潮流计算中的PIf节点

本文作者将潮流计算中那些励磁电流越限的发电机节点定义为ＰＩｆ节点，分别建立了在极坐标和直角坐标下ＰＩｆ节点的模型。ＰＩｆ节点可以较真实地模拟发电机在低电压运行条件下的无功出力行为，它可以应用于电力系统安全分析、电力系统规划和电压稳定计算等方面。用包含ＰＩｆ节点功能的潮流程序对浙江电网进行了计算，其结果与传统的方法进行了比较。

The PI_f Bus in Power Flow Studies

In this paper the authors define a new bus-PIf bus in power flow studies for a generator bus. The field current If o f this generator reaches its maximum limit If.max. The models of the PIf bus both for polar and rectangular coordination systems have been developed. The PIf bus can be used more actually to model the reactive power generation behavior of a generator in the severe operation conditions,such as in the security analysis, power system planning and voltage stability analysis. The developed POwer flow program including the PIf bus model has been tested for the Zhejiang Power System. The results have been presented and compared with the traditional method in this paper.