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针对目前统一潮流控制器（ＵＰＦＣ）元件的潮流计算的不足之处，提出一种计算ＵＰＦＣ在给定线路的有功、无功功率潮流作为其控制目标情况下的潮流方法。该方法在进行含ＵＰＦＣ元件的潮流计算时，程序处理简单，计算时间与无ＵＰＦＣ元件时相比增加较少，且无需考虑ＵＰＦＣ元件控制变量的初值选取问题。对ＵＰＦＣ元件的控制线路潮流的能力进行静态分析，并讨论当系统中存在多个ＵＰＦＣ元件时，各元件对线路潮流调节范围的相互影响。通过仿真计算，发现ＵＰＦＣ元件的串联部分在控制本线路或其它线路的潮流时，在不同的潮流变化方向上其调节幅度不相同，进行远方控制时表现的更为明显。另外，多个元件对同一线路潮流进行调节时，其总的调节幅度是各个元件单独作用时调节幅度的叠加。
Aiming at the shortcomings of the power flow calculation of the UPFC component, a power flow method is proposed to calculate the active and reactive power flow of UPFC as the control target of a given line. When the method is used to calculate the power flow of UPFC, the program is simple and the calculation time is less than that of the UPFC without any consideration of the initial value selection of UPFC. The ability of UPFC components to control the line power flow is analyzed statically and the influence of each component on the line power regulation range when there are multiple UPFC components in the system is discussed. Through simulation calculation, it is found that when the series part of UPFC components controls the power flow of this line or other lines, the adjustment range is different in different power flow direction, and the performance of the UPFC component is more obvious when it is controlled remotely. In addition, when a plurality of components regulate the tidal current of the same circuit, the total adjustment range is the superposition of the adjustment range when each component acts alone.