基于导纳测量的汽轮发电机失磁保护研究  

Generator Under-excitation Protection Based on Admittance Measurement

作　　者：姚荆[1] 王凡[2] 

机构地区：[1]上海交通大学电气工程系,上海200030 [2]上海市电力公司市南供电公司,上海200030

出　　处：《华东电力》2013年第3期665-668,共4页East China Electric Power

摘　　要：介绍了传统的基于机端阻抗测量方法的发电机失磁保护原理,指出其在实际应用过程中所存在的缺点。提出了基于机端导纳测量方法的汽轮发电机失磁保护原理,并对上述两种原理进行了分析、比较,指出基于导纳测量方法的失磁保护原理是一种更接近于发电机实际运行极限的原理。同时,还详细介绍了基于机端导纳测量方法的发电机失磁保护的整定方法以及试验方法。Traditional Generator under excitation protection is based on the Impedance measurement method. But in actual application process, this method has its shortcomings. In this article, proposed a different method base on the generator admittance measurement together with the analysis, comparison of the two methods, the result is that the ad- mittance measurement method is closer to the generator operating limit. At the same time, gave the detail of setting calculation and protection testing.

关 键 词：汽轮发电机 失磁保护 导纳判据 

分 类 号：TM77[电气工程—电力系统及自动化]