Fuzzy Logic Power Oscillations Damping (Flpod) Controller for UPFC to Enhance the Transient Stability of Multi Machine Power System

Vol.4 No.2                      

Year: 2010

Issue: Oct-Dec

Title: Fuzzy Logic Power Oscillations Damping (Flpod) Controller for UPFC to Enhance the Transient Stability of Multi Machine Power System   

Author Name: I.Prabhakarreddy, B.V.Sankar Ram   

Synopsis:   

The Unified Power Flow Controller (UPFC) is one of the key Flexible AC Transmission System (FACTS) controller used to control active and reactive power flow in a transmission line and regulate the bus voltage within specified limits at which UPFC is connected. The Proportional and Integral (PI) controller of UPFC is not enough to damp power oscillations because of slow response of PI controller. This paper presents Fuzzy Logic Power Oscillation Damping (FLPOD) controller along with PI controller to improve the performance of UPFC in damping of power oscillations. The UPFC with the proposed controller effectively damps power oscillations after clearing fault in the power system. The UPFC with proposed controller is tested on Western System Coordinating Council (WSCC) — 9 Bus system through simulation by using SIMULINK.