变压器间及其与电流互感器暂态交互作用分析和保护对策  

Transient Interaction Analysis and Protection Countermeasures Among Transformers and Between Them with Current Transformer

作　　者：杨启帆 彭子健 YANG Qi-fan;PENG Zi-jian(Maintenance Company of State Grid Hubei Electric Power Co.Ltd.,Wuhan 430000,China)

机构地区：[1]国网湖北省电力有限公司检修公司,武汉430000

出　　处：《中小企业管理与科技》2018年第33期128-129,共2页Management & Technology of SME

摘　　要：交直流混联复杂电网出现故障时,变压器之间及其与电流互感器间会出现暂态交互作用,正由于该暂态过程致使在判断故障时难度增加,从而影响继电保护装置的运作。近几年,电网发生了很多由于变压器空投造成的相邻发电机、变压器以及输电线路保护误动的情况,严重影响电网运行的安全性。论文从原理、数字仿真实验等方面展开研究,论述变压器与电流互感器暂态交互作用的作用机理,制定相应的保护措施。When AC/DC hybrid complex power grid fails, the transient interaction will occur among transformers and between them with current transformer. It is because of this transient process that the difficulty of fault diagnosis increases, thus affecting the operation of the relay protection devices. In recent years, a lot of misoperation of adjacent generators, transformers and transmission lines caused by air dropping of transformers occurred in the power grid, which has seriously affect the operation safety of the power grid. The paper makes a study from the principles, digital simulation experiments and other aspects, discusses the function mechanism of the transient interaction of the transformer and current transformer, and formulates corresponding protection measures.

关 键 词：变压器 电流互感器 暂态饱和 

分 类 号：TM721.3[电气工程—电力系统及自动化] TM41