变电站接地网两种降阻方式的分析与应用  

Characteristic and Application of Two Method for Reduce Grounding Resistance in Substation

作　　者：张志文[1] 江湛华 

机构地区：[1]广东电网公司广州供电局 [2]广州电力工程监理有限公司

出　　处：《广东输电与变电技术》2006年第5期38-42,共5页Guangdong Power Transmission Technology

摘　　要：阐述了降低接地电阻的传统方法,以及国内在接地电阻计算和降阻方法的研究和应用现状,目前两种主要接地的方式深孔压力灌注接地和爆破接地技术的原理,分析了这两种降低接地电阻方法的特点与适用范围。通过对深孔压力灌注接地在广州某110kV变电站的工程应用分析,指出深孔压力灌注接地技术对于降低土壤电阻率不均匀地区接地网的接地电阻有一定效果,但必须同时采用其他降阻措施才能达到将电站的工频接地电阻降低到0.5Ω以下。Explaining the characteristic and application range of two method for reduce grounding resistance, analyzing the application of deep-hole pressure-affuse grounding manner in certain 110kV substation engineering in Guangzhou, the author point outs that although it would be of a certain effect for the zone in which the soil resistance rate is asymmetry to reduce grounding resistance of grounding grid, in order to obtain the power frequency grounding resistance below 0. 5 Ω some other reducing measures must be adopted at same time.

关 键 词：变电站 爆破接地 深孔压力灌注 接地电阻 立体接地网 

分 类 号：TM862[电气工程—高电压与绝缘技术]