Abstract
Penetration of high renewables impacts the steady state and dynamic operational behavior of a power network. The voltage profiling in a power system is depended on the reactive support provided by generating resources. The renewables generating resources has limited support for voltage control as compare to conventional power generating resources. The voltage stability is an inherent problem associated with high penetration of renewables in power systems. This article provides a steady state voltage stability analysis for an IEEE39 bus systems under high penetration of solar and wind power. Different operational scenarios with wind, solar and mix of both have been studied to investigate the voltage stability issues in this IEEE-39.The simulation work is performed in PSSE software using Newton-Raphson’s method to compute the power flow a for mix of generation from renewable resources. It is observed that the incremental percentage of electricity generated by renewable energy sources affects the voltage stability of the system and finally this may lead to voltage instability beyond a limited of renewables penetration.
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