Abstract:
Energy crises have become a core issue for power utilities and costumers. Also it is main task to deliver continual power to inaccessible locations. DG’s and microgrids are the very reasonable solution for these problems. Instability of voltage comes due to unsustain behaviour of RE sources like wind, photovoltaic and nonlinear loads. Variations in voltage are undesirable for consumers and utilities. The voltage stability is essential demand from consumers to avoid major damages. To improve voltage stability many conventional techniques are used like capacitor banks, tap changers and transformers. But these conventional voltage stability techniques are inefficient with microgrid because of slow speed, big size and also it become cause of long term voltage instability with passing time. In thesis, I used high frequency based switches FACTS devices in low voltage microgrid to improve voltage stability. I have used these types of FACTS devices like (TCSC, SSSC and UPFC) to improve voltage stability in low voltage microgrid. Also their comparison on the basis of time response. For implementation and verification MATLAB/SIMULINK has been used.
