Impacts of Wind Generators Penetration in Power Systems towards Voltage Stability

The power systems have become complex in current years as the existing transmission lines operate closer to their limits, use flexible AC transmission system devices (FACTS), and also latest types of generators that have more sporadic characteristics and lower inertial response, such as wind generators are being penetrated. This changing nature of a power system has significant effect on its steady state voltage stability limit (SSVSL). This work presents some analyses of this changing environment of power systems and their behaviours to identify critical issues that limit the large-scale integration of wind generators and FACTS devices. In addition, this work addresses some general concerns towards high compensations in different grid topologies. The studies in this paper are conducted on the New England power system model under both small and large disturbances. From the analyses, it can be accomplished that high compensation can improve the security limits (SL) under certain operating situation, as well as contingencies