Wind power has the characteristics of fluctuation and intermittence and is dispersed into the distribution system,which inevitably affects the voltage stability of Wind Power Integrated Power Systems.Firstly,this paper uses PV flow analysis method from the point of view of static voltage stability,according to calculation method of power flow for Wind Power Integrated Power Systems,to deduce the Static Voltage Criterion( L) of Power Flow Calculation and the static voltage stability margin( Kp) based on voltage active-power sensitivity index. Then,it develops the necessary and sufficient condit...