Wind farm

as a new energy power generation technology at present

is a kind of power generation mode with most matures and scales

which at the time of bringing fast development of electric power industry in China

also bringing many difficulties in voltage regulation in the power grid. The operation difficulty is increased due to intensive operation of a large number of dynamic reactive power compensation devices

lack of coordination and continuous appearance of new problem. As for the voltage control issue of wind farm after operation

the advantage and disadvantage of presently existing reactive voltage management control system of wind power plant is analyzed through its study

the reactive power/voltage control measures based on hierarchical management is proposed further

the hierarchical control strategy of reactive voltage of wind farm is embedded into the reactive power /voltage automatic control platform（VMP）of wind power plant to make an appropriate adjustment of wind turbine unit of wind power plant

substation

reactive compensation equipment（SVC/SVG）and main transformer tap of booster station and apply the reactive power control strategy into certain wind power plant in Xinjiang for site test. It is shown by the verification result that the proposed reactive power strategy of wind power plant can adjust the voltage of wind power plant

control effectively reasonable flow of reactive power of power network

optimize power load distribution inside the power network and assure safe

stable and economic operation of power grid.