A coordinated control method for distribution static synchronous compensator (DSTATCOM) group based on slope adjustment is proposed to solve the coordinated control problem of reactive voltage with multi-distributed generators (DGs) in the same area. By taking into account the parameters of grid

the relationship between the reactive voltage

the output active current of DG and the output reactive current of DSTATCOM is established

Then

based on the maximum capacity of DSTATCOM

the slope adjustment of each DSTATCOM is set up to rationally allocate the reactive power output of each device. Thirdly

the reactive current proportional gain which is constituted by the sum of the slope setting and reactance of the corresponding line to the reference voltage is taken as a negative feedback to constitute the new voltage reference value of the DSTATCOM

and the coordinated control strategy of DSTATCOM group is established based on the slope adjustment. Finally

a network with dual DGs and DSTATCOMs is simulated to show that the slope setting will coordinate the dynamic reactive behavior of each DSTATCOM

allocate the output reactive power proportionally and stabilize the system voltage without real-time communication between the controllers.