IMPACTS OF INTEGRATING SOLAR AND WIND PLANTS INTO THE POWER NETWORK OF BHUTAN

Hydropower has been the primary source of electricity in Bhutan, and to achieve power security sustainability, alternative renewable energy sources (RES) such as solar wind are being explored. However, literature reviews present that bus voltage is most affected parameter during integration. Therefore, this paper presents impact on due integration RES into network Bhutan. The measured weather grid parameters were used inputs farm models developed MATLAB/Simulink. output from Simulink was then input model DIgSILENT Power Factory. existing Bhutan 33kV above study flow results validated against relevant standards. profile at individual maintained 0.95 1.05 p.u. varying hourly load for 24 hours different substations considered. A quasi-dynamic simulation performed stability buses penetration levels with every 5% increment. It observed a 25% level, falls below accepted limit Levelised Cost Energy calculated be Nu. 13.37/ kWh 6.02/ 6.51/ Shingkhar Yongtru solar, respectively.