某750kV主变压器中性点电抗器配置及过电压绝缘配合研究  

Configuration of Neutral Point Reactor of A 750 kV Main Transformer and Research on Overvoltage and Insulation Coordination

作　　者：庄书 印欣[2] 

机构地区：[1]国网新疆电力公司巴州供电公司,新疆库尔勒841000 [2]国网新疆电力公司检修公司,新疆乌鲁木齐830002

出　　处：《四川电力技术》2016年第5期54-57,共4页Sichuan Electric Power Technology

摘　　要：为了限制750 k V乌北变电站单相或两相短路电流水平,保证电网安全稳定运行,对乌北变电站加装电抗器进行过电压及绝缘配合研究。通过研究,提出了750 k V中性点的工频及操作过电压水平;通过中性点电抗器的工频稳态及暂态电流,达到了优化电网结构,提高安全稳定运行的目的。In order to limit the single - phase or two - phase short - circuit current level of 750 kV Northern Urumqi Substation and guarantee the safe and stable operation of power grid, the overvoltage and insulation coordination is studied by installing reactor in main transformers of Northern Urnmqi Substation. Through the research, the power frequency and operating overvoltage level in neutral point of 750 kV main transformers are put forward. By steady state and transient power frequency current of neutral point reactor in main transformer, it achieves the purposes of optimizing the structure of power grid and improving the level of safe and stable operation.

关 键 词：变压器 中性点电抗器 短路电流 过电压与绝缘配合 

分 类 号：TM864[电气工程—高电压与绝缘技术]