Abstract
The inherent variability of wind power injections becomes particularly important for wind farms connected to weaker networks, as voltage deviations become more significant and voltage regulation more challenging. Through sensitivity analysis and continuation methods, this paper examines the impact of wind injection on transformer tap operation in subtransmission networks. The results of a tap operation simulation show that voltage regulation at wind injection nodes increases tap change operations. The trade-off between local voltage regulation and tap change frequency is fundamentally important in optimizing the size of reactive compensation used for voltage regulation at wind injection nodes.
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