Comparing and evaluating the performance of SSSC with Fuzzy Logic controller and PI controller for transient stability enhancement

Abstract

FACTS (Flexible AC Transmission Systems) technology is one aspect of the Power electronics revolution that is taking place in all areas of electric energy. The power transfer capability of a transmission line can be enhanced by the use of Power Electronics based system like FACTS that offer high speed and reliable control capability. The Static Synchronous Series Compensator (SSSC) is the second generation of the FACTS controller, which is used to control the power flow in the transmission line. This paper presents the details of extensive computer simulation of SSSC with a control method based on Fuzzy Logic technique. For closed loop operation, d-q control algorithm is used for better performance result. In this paper a comparative evaluation of PI controller based and Fuzzy Logic controller based Static Synchronous Series Compensator has beendone for a test power system. Sensitivity of these controllers to the load variations is studied in MATLAB/SIMULINK and the simulation results are given.

Investigation of Modified Generalized Interline Power Flow Controller (GIPFC) and Performance Analysis

“…Earlier FACTS controllers are used in the form of thyristor switched capacitors and reactor to provide shunt and series compensation in which control of reactive power flow is difficult and unable to obtain the required load balancing in transmission system with low X/R rational real power control [4]. Afterwards, self-commutated inverter used as a synchronous voltage source for the reactive power compensation which leads to the new generation of FACTS controllers called voltage source converter (VSC) based FACTS controllers and it can either generate or absorb reactive power without the use of bulk capacitors and huge reactors.…”