The radiated EMI noise modeling and features analysis on the basis of Smart Grid Equipments

For the radiated EMI technology of smart grid equipments, the modeling and features on the interference noise are analyzed in this paper. On the basis of radiated EMI mechanism analysis on the electronic equipments, considering of the special features of smart grid, the chip interference mode and structure interference model are established according to the characteristics of radiated electromagnetic interference mechanism. At last, the radiation problems of power concentrator are taken as experiment subjects, and the problems are diagnosed and suppressed by the interference model proposed in this paper. After efficient suppression methods, the equipment can pass the limit requirements of China standard GB9254 ClassB.