EMC design of intelligent pole-mounted switch controller

As an important part of the smart grid, the intelligent pole-mounted switch controller is widely used in medium voltage distribution network. It is a highly integration switch gear of sensing measurement, computer networks, communications and other technologies. The pole-mounted switch controller uses weak power to control strong power, and it can run in complex environment. So its stability is directly related to the security of the whole grid. According to the industry standard of DL/T721, a EMC design of pole-mounted switch controller is based on the aspects of ESD immunity design, fast electrical pulse train design, surge immunity design and voltage sag. So that the switch can not only resists the external interference such as thunder and lightning, but also resists the internal interference, and accurately gets the grid data and makes the correct action, and keeps the safety of power system.