Optimal Reactive Power Flow Considering Generator Voltage Regulation Characteristics

This paper proposes a novel optimization model for optimal reactive power flow concerning wind power generation, which considers generator voltage regulation characteristics. Synchronous generators (SGs) static excitation error control characteristics and doubly fed induction generator(DFIG) wind farm reactive power (var)-voltage control characteristics are considered. An extra inner potential node is introduced to reflect the excitation limits. Complementarity constraints are applied to represent the wind farm var-voltage control. Power fluctuation caused by the variability and uncertainty of wind generation are considered based on scenario analysis. Nonlinear primal-dual interior point algorithm is used to get the optimal strategies. Case study demonstrates effectiveness of the proposed approach.