Impact of embedded generation on distribution system voltage stability

Embedded generation is being connected increasingly to distribution networks. For many new renewable energy schemes, this will involve the connection of induction generators to weak rural networks. It has been shown by studies, and subsequent operating experience, that relatively high ratios of wind farm capacity to network short circuit level can be accommodated successfully if conditions are favourable. However, voltage stability of the power system is likely to be an important limiting factor to the continued increase of the ratio of generation capacity to network short circuit level.