Abstract: For the application of reactive voltage optimization and control techniques, the reactive voltage optimization modeling methods of power grid in the environment of high proportion of new energy access are summarized, which are mainly divided into multi-time scale reactive voltage optimization, hierarchical and partition voltage optimization, active and reactive voltage coordination optimization, and reactive voltage optimization based on model predictive control.The mathematical methods of reactive voltage optimization are briefly analyzed, which are mainly divided into random variable processing method and reactive voltage optimization model solving method.Combined with the structural changes of“source-grid-load-storage”,the development trend of energy internet and the current situation of power market reform, the future research is prospected from the perspective of multi-dimensional“source-grid-load-storage”coordinated voltage control, multi-heterogeneous energy collaborative optimization control, and“source-grid-load-storage”collaborative optimization under the market environment.