As for the contradiction between rapidity and stability shown by the application traditional PID controller in the voltage control system of static var compensator and also the defect of weak self-adaption robustness

a kind of neuron variable structure PID controller by the use of neuron control and proportional control is designed. In addition

an on line adjustment of parameters Kp

Kdand Kifor the variable structure PID controller by way of fuzzy control is achieved. The simulation results show that application of all fuzzy neuron variable structure PID controller to SVC voltage control system can compensate reactive power of the system rapidly and effectively

realize voltage stability control of system;meanwhile

the control system has fast response speed

better static and dynamic performance

strong robustness as well as self-adaption ability.