田湾核电站发电机失磁保护优化及改进

Improvement of Generator Loss-of-Excitation Protection in Tianwan Nuclear Power Plant

田湾核电站为提高发电机失磁保护的安全可靠性,对原俄罗斯供发电机失磁保护进行了微机化改造,总结出了一套对发电机失磁保护微机化改造及其维护行之有效的经验,详细阐述了微机型失磁保护的基本原理和维护方法。实践证明,改造后的发电机失磁保护可以提升发电机运行可靠性和安全性,并缩短检修工期。

This paper mainly presents how to improve the safety and reliability of generator loss-of-excitation protection of Tianwan nuclear power station,and the backward technology and poor reliability generator loss-of-excitation protection which was made in Russian had been transformed to microcomputer protection.A set of maintain effective experiences of designing,installation,commissioning and maintenance about generator loss-of-excitation protection is summarized.Practice has proved that it is of great advantage to enhance the operation reliability and safety of the generator,and shorten the maintenance period after the transformation of the generator loss-of-excitation protection.