故障分量比率差动对变压器轻微故障检测的研究  

Research on Detection of Slight Faults of Transformer Based on Superimposed Current Differential Protection

作　　者：邓祥力[1] 权宪军[1] 杨泽平[1] 刘世明[1] 

机构地区：[1]山东烟台东方电子信息产业股份公司,山东烟台264000

出　　处：《电力设备》2004年第8期31-34,共4页Electrical Equipment

摘　　要：文章将故障分量的比率差动保护与传统比率差动保护在检测变压器内部轻微故障,如匝间短路、高阻接地短路动作灵敏度方面作了一些比较,用EMTP建立了变压器匝间短路和高阻接地的模型,并在模型的基础上进行了仿真验证,充分说明了故障分量比率差动保护在性能上的优越性。The method of realizing the transformer protection based on superimposed differential currents is presented and analyzed in this paper .The compare of sensitivity detecting turn-to-turn short circuit and high-impedance pound faults between conventional differential relay and differential relay based on superimposed differential currents is given.The sensitivity of operationis compared also.The dynamic model of turn-to-turn short circuit and high-impedance-grounded fault of transformer is established.Based on this dynamic model of transformer,many simulation works have been made with this algorithm and proved sufficiently the more ovewhelming advantage than the conventional algorithm.

关 键 词：故障分量:差动保护 变压器保护 匝间短路 高阻接地故障 

分 类 号：TM407[电气工程—电器]