Method and system for discriminating drop foot voltage drop point corresponding to out-of-step oscillation center

The invention discloses a method for discriminating a drop voltage drop point corresponding to an out-of-step oscillation center, and discloses a system with the method for discriminating the drop voltage drop point corresponding to the out-of-step oscillation center, and the method for discriminating the drop voltage drop point corresponding to the out-of-step oscillation center starts from the angle of wide-area branch response. Flowing reactive power at the head end and the tail end of a branch is utilized to construct a drop foot voltage drop point discrimination criterion, and the obtained result can eliminate the misjudgment risk brought by a pseudo drop foot drop point to splitting section selection and dominant form discrimination so as to ensure the accuracy of subsequent emergency control. Only two ends of the branch need to be measured, the applicability is good, and the method has engineering application value. 本发明公开了一种失步振荡中心对应垂足电压落点的甄别方法，并公开了具有失步振荡中心对应垂足电压落点的甄别方法的系统，其中失步振荡中心对应垂足电压落点的甄别方法从广域支路响应的角