±800kV换流变压器型式试验中发现的若干问题分析  

Analysis on the Problems Occured in the Type Test of ±800 kV Converter Transformer

作　　者：阳少军[1] 赵杰[2] 李文平[3] 

机构地区：[1]中国南方电网超高压输电公司,广州510620 [2]中国南方电网电力调度控制中心,广州510623 [3]保定天威保变电气股份有限公司,河北保定071056

出　　处：《南方电网技术》2011年第1期49-52,共4页Southern Power System Technology

摘　　要：云广±800 kV换流变压器是世界上首次研制成功的±800 kV特高压换流变压器,应加强其运行维护和风险控制。介绍了该换流变压器结构特点,分析在型式试验中(诸如交流外施试验期间的局部放电试验,有载分接开关的温升试验和运行试验)发现的若干问题及其解决方案。提出了具体的运行维护建议和风险控制措施。As the ±800 kV converter transformer for Yunnan ？ Guangdong DC Project is the first one in the world,This paper introduces the structure features of the transformer,analyzes the safty margin of the electrical design and the problems occurred in its type test such as partial discharge test during AC applied test,temperature rise test and operation test of the on-load tap changer as well as the resolutions for these problems.Furthermore,the propositions and measures for operation maintenance and risk control of the transformer are put forward.

关 键 词：特高压直流 换流变压器压器 局部放电 有载分接开关 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM406