Electromagnetic interference and its curbing methods in steam power plant

The electromagnetic environment of the production site in power plant is very complicated, all kinds of electromagnetic interference that cause great damage to the measure equipments and control devices have posed greatly threat to the stability and safe operation of the site equipments. This paper introduces the channel through which the electromagnetic interference damages the electronic equipments, and its principle and affect on the site equipments. By using the living examples of site production in power plant, the paper tries to probe into the methods, such as shielding, earthing, isolation to against the channel of electromagnetic interference, and means to reduce the sensitivity of the electronic equipments to the electromagnetic interference to the minimum extent. According to the origin of the electromagnetic interfe- rence factors, to revise the hardware, software, and choose correct measures to handle the problems are presented.