Review on Recognition and Calculation Method for Bifurcation Points in Steady-state Voltage Stability

Saddle-node bifurcation point and limit-induced bifurcation point are commonly seen in analysis of steady-state voltage stability of power system.The recognition and calculation of the two different bifurcation points can enables precise calculation of sensitivity of various control variables at bifurcation points to voltage stability margin so as to achieve the control.The paper reviews on the status of current research on the problem and it mainly introduces respective principles and characteristics of saddle-node bifurcation point and limit-induced bifurcation point;in addition,the paper discusses main methods for recognition and calculation of the both different bifurcation points,and it comparatively analyzes amount of calculation,efficiency,astringency and practicability of the calculation methods.Finally,futural research direction and problems that need to be solved in recognition and calculation of the two different bifurcation points are stated.