Meaning of UPFC

Hello Buddy , What is the Meaning of UPFC? Will ypou nbplz provide me General information about UPFC and Paper Which Shows that the Unified Power Flow Controller ?

[Raman Vij]

A Unified Power Flow Controller (UPFC) is an Electrical Device For Providing Fast-Acting Reactive Power Compensation on High-Voltage Electricity Tran smission networks.

It Uses a Pair of Three-Phase Controllable Bridges to produce current that is injected into a transmission line using a series transformer.

The Controller can Control Active and reactive power flows in a transmission line.


The UPFC uses solid state devices, which provide functional flexibility, generally not attainable by conventional thyristor controlled systems.

The UPFC is a Combination of a Static Synchronous Compensator (STATCOM) and a static Synchronous series compensator (SSSC) coupled via a common DC voltage link.

The UPFC allows a Secondary but important function such as stability control to suppress power system oscillations improving the transient stability of power system.

Here I am Attaching pdf file which Having UPFC Paper Shows that the Unified Power Flow Controller

Paper Shows that the Unified Power Flow Controller