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Analysis and Improvement of Exciting of Asynchronous Generator Used in 450,000 t/year Ammonia Synthesizing Equipment
Pages: 54-56
Year: Issue:  11
Journal: S&M Electric Machines

Keyword:  异步发电机 同步速率 励磁涌流 零序电流;
Abstract: 介绍了GE公司制造的膨胀机(131-JX)—发电机(131-JG)的工作原理,着重分析了异步发电机的投入励磁。与同步发电机相比,异步发电机的并网发电过程更加简洁可靠,且具有较高的灵活性。此外,还对继电保护设置提出了改进措施:修改了接地故障保护的定值;将原有定时限零序过流改为反时限过流;为保证零序过流保护的灵敏性,降低了保护起动值,增加了延时时间。
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