Multi-objective reactive power optimization strategy of power system considering large-scale renewable integration

To fully tap the abilities of renewables in reactive power optimization, this paper develops a detailed model for regulation capabilities wind turbines and photovoltaic units studies their impact on system’s operation. First, system with integration is established using AC flow. The are modeled detail according to topologies operating characteristics, then further simplified feasible region. An improved DC flow adopted handle non-linear characteristics system. On basis, multi-objective optimization constructed minimize generation cost, solar curtailment, voltage offset. Finally, comparisons between two types models different scenarios designed. Numerical simulations demonstrate that participation can improve operational economy stability systems.