Isaac Kofi Otchere, Bernard Arhin, Kwabena Amoako Kyeremeh, E. Frimpong
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Investigation of Voltage Stability for Transmission Network with High Penetration of Wind Energy Sources
The rise of renewable energy (RE) source integration in transmission network has raised concerns on power quality. In this paper, the voltage stability of transmission networks with wind energy source integration is investigated using P-V and P-Q curves. The IEEE 30-bus system is used as a case study. The weak buses, used as possible connection points for the wind generator, were obtained using P-V curves. Graphical representation for voltage stability region for each candidate bus was also presented to help identify the best location for the wind energy source. The effect of the renewable energy source is then assessed by comparing the active power margin obtained at a specific load bus for different wind penetration levels. MATLAB software together with MATPOWER scripts were used to obtain simulated results.
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