Voltage security enhancement using ASVG nonlinear control

In this paper, the mathematical model of an advanced static VAr generator (ASVG) is developed. The nonlinear control strategy of the ASVG is proposed on the basis of the nonlinear control theory and the law is also applied in the study of enhancing power system voltage stability. The research results show that the voltage stability can be effectively improved and the voltage collapse can be attenuated efficiently with the nonlinear ASVG control system.