Paper title: FUZZY AND PROPORTIONAL INTEGRAL CONTROLLER DESIGN FOR THYRISTOR CONTROLLED SERIES CAPACITOR AND POWER SYSTEM STABILIZER TO IMPROVE POWER SYSTEM STABILITY
Author(s): GHAZANFAR SHAHGHOLIAN, MOJTABA MAGHSOODI, AMIR MOVAHEDI,
Abstract: Low frequency oscillations can cause power system instability. This paper introduces a proportional integral (PI) controller
according to Fuzzy-Sugeno logic (FPI) for a thyristor controlled series capacitor (TCSC) in order to improve the stability and to
damp the low frequency oscillations. This controller is used with a lead-lag controller for a power system stabilizer (PSS) in a
single-machine infinite-bus system. Also, an independent fuzzy controller for PSS is designed to demonstrate the capability of
FPI controller. Three following compositions of the controllers are implemented to control TCSC and PSS at the same time: (I)
two lead-lag controllers together for TCSC and PSS, (II) a fuzzy controller for PSS with a lead-lag controller for TCSC and (III)
a lead-lag controller for PSS with a FPI controller for TCSC. Simulation results show that the designed fuzzy and PI (FPI)
controller is robust against different loads and faults.
Keywords: Thyristorcontrolled series capacitor (TCSC), Power system stabilizer (PSS), Fuzzy logic, Proportional integral (PI)
controller, Takagi-Sugeno Year: 2016 | Tome: 61 | Issue: 4 | Pp.: 418-423
Full text : PDF (285 KB) |