铜接地体技术在GIS变电站工程中的探索与实践  

Research and practice of copper-made grounding device technique in GIS substation project

作　　者：黄健光[1] 白忠林 戴雯霞 

机构地区：[1]江门市电力工程输变电公司,广东江门529030 [2]广东创成建设监理咨询有限公司,广东广州510075 [3]广电集团江门供电分公司,广东江门529030

出　　处：《电力自动化设备》2004年第10期69-73,共5页Electric Power Automation Equipment

摘　　要：铜接地体与常规热镀锌钢接地体相比,其导电性能好8倍,耐腐蚀性能强3倍,并且施工方便,更适用于六氟化硫气体绝缘全封闭组合电器GIS(SF6Gas鄄InsulatedSwitchgear)变电站接地系统。结合广东省江门市220kV新会变电站和广东省台山发电厂220kV铜鼓升压站等GIS配电装置变电站工程实例,介绍了铜接地体截面面积计算、材料规格选择和连接方法;分析了铜接地体不同连接头的可靠性及其在施工中应注意的事项。Compared with traditional zinced steel grounding device ,the copper-made grounding device is eight times better in conductivity ,three times stronger in erosion tolerance ,and con-venient in construction ,which makes it fit for GIS ( SF6Gas-Insulated Swichgear ) substation groun-ding system.With the GIS substation projects for220kV substation and220kV power plant voltage-raising station as examples ,techniques for copper-made grounding device are introduced ,including cross sectional area calculation ,material selection and connection methods.The reliability of copper-made grounding device with different connection types is analyzed ,and cautions in construction are advised.

关 键 词：SF6气体绝缘全封闭组合电器 GIS 铜接地体 触摸电压 接地线连接头 

分 类 号：TM241[一般工业技术—材料科学与工程] TM63[电气工程—电工理论与新技术]