In view of the reactive power flow feature of high voltage cable distribution network

operation situation and existed problems in the present reactive voltage control

the reactive compensation method for high voltage distribution network based on the reactive power flow features of cables is presented. In this paper

the balance layer of the distribution network is firstly defined

the reactive power flow feature and control principle inside the cable balance layer is analyzed

then

the necessity of adding low inductive reactance compensation for the HV distribution network of cable is verified

the economic compensation amount is deduced of the line node and the type and position of each compensation point is determined with this amount as the setting point. Finally

the reactive power compensation method of HV distribution network of cable is proposed

which

as per the classification result of each compensation point of the network

performs coordination control for the corresponding capacitive and inductive compensation device. It shown by the simulation calculation that the method

on the basis of meeting reactive power local balance as much as possible

can improve effectively voltage quality of the whole network and loss reduction.