大型发电机灭磁系统设计的几个主要问题  

Several issues on de-excitation system design of large generators

作　　者：粱建行 高光华 易先举 陈红君 邹来勇 

机构地区：[1]长江勘测规划设计研究院机电设计处,湖北武汉430010

出　　处：《人民长江》2011年第15期86-91,共6页Yangtze River

基　　金：国家"九五"攻关(97-312)项目(97-312-01-11)

摘　　要：为了确保所选择的用于大型发电机灭磁系统的磁场断路器能够满足发电机灭磁分断的要求,探讨了降低磁场断路器的灭磁分断电流、电压及减少发电机灭磁时间的方法和途径。叙述了在大型发电机灭磁系统设计中的几个技术问题,包括发电机磁场断路器灭磁分断能力的测试标准及设计选择方法、采用SiC或线性灭磁电阻的灭磁系统接线、发电机继电保护设置误强励保护、交直流冗余灭磁及目前磁场断路器采用的产品类型等。初步分析了存在的问题并提出了进一步探讨的建议。In order to ensure that the field circuit breaker used in large generators can satisfy the requirements of the de-excitation breaking;we discuss the ways and means to reduce de-excitation breaking current of the field circuit breaker,voltage and the de-excitation time.Moreover,we describe several technical issues on de-excitation system design of large generators,including the testing standards and design selection methods of de-excitation breaking ability of the field circuit breaker of generators,the use of SiC or de-excitation system wiring of linear de-excitation resistance,mistaken strong excitation protection of generator relay protection setting,redundant de-excitation of AC/DC and the product types of field circuit breaker nowadays.Finally,a preliminary analysis of the issues is made and recommendations for further discussion are proposed.

关 键 词：灭磁系统 磁场断路器 误强励灭磁 误强励保护 交直流冗余灭磁 大型发电机 

分 类 号：TV31[水利工程—水工结构工程]