The Automatic Following Control of Arc Suppression Coil with Thyristor Switched Capacitors

Various neutral grounding techniques are applied in medium voltage distribution networks in the world. With the applications of microcomputer technique and power electric technique in this area have led to significant modifications in arc suppression coil grounding technology. The principle and automatic following control method of arc suppression coil with TSC (thyristor switched capacitors) are described in this paper. A new grounding system with TSC arc suppression coil is developed. The results of field tests are analyzed. They show that the design of TSC arc suppression coil is correct and the automatic following system is reliability