Research On Control System Of New Arc-suppression Coil With Magnetic Bias

After the detailed analysis of the various automatic tuning principles of the arc-suppression coils, a new tuning method, that is, a single injection method based on natural parameters in power system is presented. The line selection based on zero order current changing is put forward by detailed theoretical analysis. The method is able to figure out the fault line quickly and accurately after single-phase fault.The regulation and control model of dual-computer is adopted. The hardware and software design of control system of new arc-suppression coil with magnetic bias is achieved. According to practical needs of the control system, design and development of graphic interface is realized. We can realize synthetically optimal control of line selection and compensation to capacitive current in single-phase fault, by a new control method which organically combines line selection based on zero order current changing and automatic tuning of new the arc-suppression coil with magnetic bias.