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Stability analysis of power system with doubly fed induction generator-based wind farm connected through series flexible AC transmission SYSTEM device compensated line

Wind farm may be remotely located due to the availability of wind. Therefore, series compensation may be required to evacuate large wind power to a distant power system. The impact of series compensation on the stability of power system with wind farm is of concern for transmission and system operation. This paper investigates the stability issues of power system with remote wind farm. The studied power system network is connected to a remote wind farm through a series Flexible AC Transmission System device, Static Synchronous Series Compensator, compensated transmission line. The small signal stability and transient stability issues are studied for uncompensated and compensated system. The results show that damping ratio is increased for most of the oscillatory modes showing increase in small signal stability with series compensation. The eigenvalue sensitivity analysis is performed with the degree of compensation and voltage gain as sensitivity parameters. Transient analysis is performed for a three-phase fault, and the results show improvement in transient stability of compensated power system.