Recently, NR PCS-985 exciter protection has been successfully put into operation in Ningde and Yangjiang 1000MW nuclear power plant, effectively solving the problem of "weak protection" of exciter, which is of great significance for improving the operation reliability of nuclear power equipment.
At present, the excitation system of large-scale nuclear power generators generally adopts brushless excitation mode, which has the problem of weak protection configuration or even no protection.
real-time online monitoring
The main difficulty lies in the fact that the rotor armature side is a rotating part
The main difficulty lies in the fact that the rotor armature side is a rotating part, which cannot realize the direct measurement of electrical quantities and the small signal quantity of various fault characteristics of the exciter, so it is difficult to accurately identify.
Given these difficulties, NR Electric PCS-985 exciter protection adopts advanced fault characteristic quantity comparison and identification technology, which realizes real-time online monitoring of various faults of the exciter stator, rotor, and rotating rectifier system, with comprehensive protection logic and strong fault identification ability.
NR PCS-985 exciter protection
With superior practical technology, and stable and reliable performance, NR PCS-985 exciter protection has won high recognition from users.
The successful operation of Ningde and Yangjiang 1000MW nuclear exciter protection marks that NR has successfully mastered the fault detection technology of brushless exciter and rotating rectifier system, and has laid a solid foundation for the promotion and application of subsequent nuclear power protection projects.
