升压变压器低阻抗保护的原理及测试方法  

Principle of stepping-up transformer with low impedance protection and its test ways

作　　者：王莹[1] 王松廷[1] 

机构地区：[1]哈尔滨电力职业技术学院,哈尔滨150030

出　　处：《信息技术》2011年第7期175-177,180,共4页Information Technology

摘　　要：升压变低阻抗保护主要作为发电机—变压器组相间短路的后备保护,逻辑判据中包含相间阻抗、相电流及负序电流三个变量参数,在测试过程中有一定的难度。通过对国电南京自动化股份有限公司生产的GDGT801型数字式发变组保护A柜变压器低阻抗保护的调试和检测,总结出该保护的调试技巧及测试方法,对有类似微机保护装置的发电厂、变电站、电力职业院校及电力培训中心也有一定借鉴意义。The transformer with low impedance protection is used as the reserve protection of qenerator-transformer banks interphase short-circuit,the logic criterion includes interphase impedance,phase current and negative sequence current.It is difficult to test the three parameters.This paper presents a example for the test.GDGT801 generator-transformer banks protection A phase transformer low impedance protection,and introdnces the test ways.It has a reference to the generate plants,substation,power institnte and power training center.

关 键 词：升压变 低阻抗 阻抗圆 负序电流 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]