交流灭磁技术在发电机自并励系统中的应用

Application of AC Deexcitation Technology in Self-paralleled Excitation Generator Systems

介绍几种具有代表性的灭磁保护方案 ,论述双断口磁场断路器配氧化锌非线性电阻灭磁时所需要的换流条件 ,探讨常规灭磁方案所存在的问题 ,推荐一种新型的灭磁保护方案 ,即交流灭磁 ,介绍其基本原理及试验结果 ,论述该交流灭磁方案在大型同步发电机组上应用的可行性、经济性。

This paper describes the essential conditions for successful deexcitation of the dual-pole field breaker with high power nonlinear ZnO resistor. Then it analyzes the problem of the conventional deexcitation system.A new kind of AC deexcitation method is recommended.Its developing process,base principium and testing result are analyzed.It is concluded that the new method applied in large dynamotors is feasible and economical.