In view of the voltage limit and economy problems of a number of PV in the form of micro grid access to the active distribution network

in this paper

the microgrid operation model is set up and a kind of optimization allocation method of reactive power compensation equipment of coordinated planning of switching shunt capacitor（C）and the static var generator（SVG）is proposed. Firstly

the features of power supply and energy storage

the operating cost and the electricity price mechanism in the microgrid are considered

and the general strategy rules of microgrid power control and the multi-scene model of the probability of grid load are established with the aim of economic optimization. On this basis

the bi-level optimal configuration model of dynamic and static reactive power equipment is set up. The lower model considers the optimal operation mode of the equipment

while the upper model optimizes the configuration of reactive devices. Finally

the effectiveness of the model by the modification IEEE 33 node example is verified. It is shown by the simulation result that the proposed method can significantly improve the voltage quality

reduce the network loss and increase economic efficiency.