Stability enhancement of DG sourced power system with modified AVR and PSS

Development in power market and environmental issues has encouraged increased penetration of distributed energy sources and large scale of renewable energy sources in distribution system. Distribution system is facing stability issues with integration of distributed generators and controllers that were not much discussed in the past. Many existing methods have been proposed to enhance the stability of renewable energy based distribution system with source assumed as constant and uncertainties of wind and solar power is not much discussed in the literatures along with stability issues. This proposed method presents the stability of renewable energy based distribution system with varying energy source considering intermittent nature of wind and solar energy using probabilistic approach. The system is supplied by conventional and distributed generating sources like PV and wind. Monte Carlo approach is used for predicting the wind and solar power uncertainties. Proposed work explains both small signal stability and transient stability enhancement of DG sourced power system with power system stabilizer and automatic voltage regulator. It is carried out in is 4 machine 10 bus system. The initial simulation has been carried out using ETAP/MATLAB.