66kV接地变兼站用变一体化研究及试验

Research and Test on 66 kV Earthing Transformer and Substation Transformer Integration

针对东北地区目前只能在66 kV变电站侧安装消弧线圈,无法在220 kV变电站66 kV母线安装消弧线圈的现状,分析了当前应用的不足及存在的多种隐患。在220 kV变电站没有可用间隔的情况下,提出了采用66 kV接地变兼站用变一体化带消弧线圈的解决方案,并进行了技术方案比较、经济技术分析、社会效益和环境效益比较。该方案的应用提高了电力系统运行的可靠性,推广前景广阔。

According to the current situation which it can only install arc-suppression coil in 66 kV substation for the northeast area and can not install in 220 kV substation 66 kV bus bar,this paper analyses the deficiency of the application. Under the condition of no available space in 220 kV substation,using the 66 kV earthing transformer and substation transformer integrated with arc-suppression coil is proposed. Technical proposal is compared by the analysis of economic technology,social benefit and environment benefit. Application of proposal improves the reliability of power system operation with broad prospects.