在常规变电站改造中采用HGIS设备的施工方法

Implementation Method for Retrofitting of Conventional Substations for Installing HGIS

文中针对常规变电站长期存在因隔离开关触头接触表面积垢、锈蚀、氧化等造成接触面发热,电流互感器漏油等造成绝缘降低,笔者以恩和220 kV变电站110 kV侧采用混合式开关设备(HGIS)设备的改造安装施工为实例,介绍了HGIS设备在常规变电站如何进行改造安装施工的方法与实现,有效地解决了新型设备HGIS在老旧常规变电站安装改造施工的相关问题。文中所介绍的改造施工方法,降低了建设投资,缩短了建设周期,因采用母线轮替停运方式,有效的缩短了停电时间,电量负荷损失已基本降到最低,电网企业的经济效益和社会效益得到了可靠保障。

Aiming at the problems existing in conventional substation such heat caused by dirt, corrosion, oxidation, and Insulation loss caused by 1 as disconnector contact surface over- eakage of current transformer, taking the Enhe 220 kV substation 110 kV side hybrid gas insulated switchgear（HGIS）equipment retrofit project as an example,the methods are intro-duced for the installation and implementation of HGIS retrofit in a conventional substation,it effectively solves the problems of the new equipment HGIS in the installation and reconstruction of the old conventional substation. The methods presented in this paper, reduce the construction investment and shor- ten the construction period. By switching out the busbars alternatively, the outage and load loss has been reduced to a minimum, the power grid enterprise economic benefit and social benefit has been a reliable guarantee.