This paper gives a summary of classic model of reactive power optimization and considers the influence of load variation under the mode of electric market

and also considers such presently popular reactive optimization model as distributed power supply connection.It describes conventional optimization algorithms

intelligent optimization algorithms and their improvement algorithms

application and result of hybrid algorithms of above algorithms in the reactive power optimization problem as well as analyzes advantage and disadvantage of various algorithms.It finally points out that with the development of smart grid

proposes corresponding reactive optimization model

use improved algorithms based on single algorithms or hybrid algorithms improvement to solve reactive power optimization problem.Achievement of real-time computation of reactive power optimization is the new development direction of reactive power optimization issue in the future.