Basic Operation Of UPFC

Sir I want to know that what is the basic operation of UPFC so can you please tell me the same

[Pathak]

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 main advantage of the UPFC is to control the active and reactive power flows in the transmission line.

A Unified Power Flow Controller (or UPFC) is an electrical device for providing fast-acting reactive power compensation on high-voltage electricity transmission 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.

UPFC Circuit






The UPFC concept was described in 1995 by L. Gyugyi of Westinghouse.

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

Types of facts controllers:

FACTS controllers can be broadly divided into four categories, which include series controllers, shunt controllers, combined series series controllers, and combined series-shunt controllers.

Their operation and usage are discussed below.