接地网腐蚀诊断优化测量方法  

A corrosion diagnosis method for optimized measurement of grounding grids

作　　者：刘渝根[1] 王硕[2] 田金虎[1] 孟宪[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]北京市电力公司,北京100031

出　　处：《重庆大学学报（自然科学版）》2008年第11期1303-1306,共4页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(59677016)

摘　　要：以2个220 kV变电站接地网为模型进行接地网腐蚀诊断模拟试验。在初步诊断节点测量中分别采用大跨距、小分块和大分块结合不动点3种方案,列举出其诊断结果,并对3种方案进行分析、比较。结果表明了选择大分块结合不动点作为初步诊断时测量节点对的优化诊断法,诊断效率最高,效果最好。据此提出了接地网腐蚀诊断初步诊断时的选线原则,使该诊断方法更具工程实用性。Simulated experiments of grounding grid corrosion were conducted based on two 220 kV substation models. In initial diagnosis, the measurement nodal points were planned to great span, small piecemeal, and large piecemeal jointing fixed points. A comparative study of the three measurement plans was carried out. The results show that the large piecemeal with fixed points had the best performance and could, be used as a practical method for diagnosing grounding grid corrosion.

关 键 词：接地网 腐蚀诊断 优化方法 电阻测量 

分 类 号：TM863[电气工程—高电压与绝缘技术]