For solving such problem as voltage excursion between wind power generation and insufficient study of reactive power distribution coordination in the filed due to multi-type equipment in wind farms

in this paper

the multi-objective control method considering voltage control level and dynamic reactive reserve of all wind power turbines of large wind farm is proposed on the basis of traditional wind farm AVC system.Firstly

the adjustable capacity of total reactive power considering all wind power generator and reactive power compensation equipment of each wind farm after equal distribution of terminal voltage of wind turbine generator is calculated

then the switching plan of discrete reactive power equipment is defined according to the ultra-short-term wind power prediction so to obtain the function between the system safety factor and the adjustment of all reactive power compensation equipment by the use of least squares fitting method.Then

such multi-target constraint as

voltage deviation consideration

minimum reactive power adjustment

dynamic reactive reserve meeting requirement after the fault are considered based on optimal flow calculation so to obtain the most optimal setting of the reactive power compensation equipment.Finally

the effectiveness of the method is verified through an actual wind farm in Gansu power grid.