应用PTC和ZnO实现同步发电机快速灭磁  

The Application of PTC and ZnO in Fast De-excitation of Synchronous Generators

作　　者：苏小林[1] 

机构地区：[1]山西大学工程学院,山西太原030013

出　　处：《电力学报》2005年第2期104-106,111,共4页Journal of Electric Power

摘　　要：分析了正温度系数热敏电阻PTC和ZnO非线性电阻特性,提出了利用PTC和ZnO元件实现同步发电机快速灭磁的技术方案,使交流灭磁开关能快速熄弧开断,移能到ZnO中进行能量消耗,这种方案可以应用到大型发电机组的灭磁。This paper analyzes the properties of the positive temperature coefficient thermal-sensitive resistors PTC and the ZnO nonlinear resistors, and presents the technique of applying PTC and ZnO to deexcite fast for the synchronous generator by which the AC field discharge circuit breaks can quench arc fast and open to shift the magnetic energy in the rotor windings onto ZnO resistors for energy consumption. This technique can be applied to de-excite for high-capacity generators.

关 键 词：PTC ZNO 同步发电机 灭磁 

分 类 号：TM311[电气工程—电机]