Study on Static Voltage Stability of Power System Based on Static Models of Common and Doubly Fed Asynchronous Generators

The static voltage of power system connected with wind farms based on common and doubly fed asynchronous generator static models is analyzed.By means of simulating a certain regional power network located in Xinjiang Uygur Autonomous Region,the PV curves at point of common coupling,key buses and important substations are plotted;the variation of voltage,static stability limit and margin are analyzed while wind farm is connected to power system.It can be seen from simulation results that the static voltage limit at weak node is lower,and the static voltage of power system connected with wind farm composed by doubly fed induction generators is more stable than that connected with wind farm composed by wind turbines with common asynchronous generators.