乒乓式转子接地保护在发电机转子保护中的应用

Application of ping-pong type rotor ground fault protection in a generator rotor protection

分析了一期800 kt/a硫酸装置发电机传统电桥式转子接地保护存在的不足。鉴于目前微机转子接地保护技术的普及,从技术、投资和保护完善等层面论述了微机转子接地保护中乒乓式转子接地保护的技术应用。微机乒乓式转子接地保护用于该800 kt/a硫酸装置后,提高了发电机转子接地保护的可靠性和灵敏性,保证了发电机的安全运行。

The shortcomings of the traditional bridge-type rotor grounding protection for the generators of the 800 kt/a sulphuric acid plant were analyzed.In view of the popular application of the microcomputer rotor grounding protection technology,the application of the ping-pong type rotor ground fault protection in the grounding protection of the microcomputer rotors were reviewed from the aspects of technology,investment,and protection.Application of the microcomputer ping-pong type rotor ground fault protection in the 800 kt/a sulphuric acid plant improved the reliability and sensitivity of the generator rotor ground fault protection and ensured the safe operation of the generators.