Impact of High-voltage Converters on Motor Protection and Resolving Method

Traditional motor protection fails when large-capacity converter is applied to important auxiliary machines in thermal power plant.Correspondingly,the impact of high-voltage converters on motor differential protection is analyzed,and a resolving method of differential protection under converter running condition is provided according to the reform of induced fan converter in Guangdong Guohua Taishan Power Plant.It is verified in practice that the method can provide sound protection for motor and technical support to energy conservation,emission reduction and safe operation of power generation enterprises.