LVRT improvement and transient stability enhancement of power systems based on renewable energy resources using coordination of SSSC and PSSs controllers

Abstract

This paper presents the transient stability and low voltage ride through (LVRT) improvement of IEEE 68-bus system connected with wind farms and photovoltaic (PV) plant through coordination of static synchronous series compensator (SSSC) and power system stabilizers (PSSs) controllers. It is generally accepted that there is a threat to the stability of power systems with the penetration of wind farm and PV plant. Therefore, in order to improve transient stability and LVRT in the power system, this paper proposes the application of PI controllers in PV and wind farm controllers and a combination of PSS and SSSC controllers. Also, adaptive velocity update relaxation particle swarm optimization (AVURPSO) algorithm and genetic algorithm (GA) have been applied and compared for controllers design.