青藏铁路变电站接地网腐蚀断裂点的判断  

Analysis and Judgement on the Corrosion Broken Point of the Substation Grounding Grid Along Qinghai-Tibet Railway

作　　者：付龙海[1] 吴广宁[1] 王颢[2] 李晋[2] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]铁道第一勘察设计院电化处,兰州730070

出　　处：《电力系统及其自动化学报》2006年第1期20-23,共4页Proceedings of the CSU-EPSA

基　　金：铁道部科技开发项目(2001J005-2);铁道部科技研究开发计划课题(2003J008-C)

摘　　要：由于存在各种原因腐蚀及冻土季节性融冻时的机械应力,青藏铁路沿线变电站的接地网比在平原地区更容易出现接地网导体的腐蚀和断裂。为了掌握接地网导体的腐蚀和断裂情况,利用电网络和矩阵理论,建立了接地网在土壤中腐蚀、断裂点诊断的数学模型。根据优化理论建立了线性目标函数并对建立起来的腐蚀、断裂点判断数学模型进行了求解。通过大量的模拟实验表明,此方法可以有效地发现变电站接地网出现的腐蚀、断裂情况并可准确地定位,为青藏铁路沿线变电站接地网的安全可靠运行提供保证。The substation GG of Qinghai-Tibet railway is buried in the frozen soil. As a result of corrosion and stress during soil thawing and freezing, the conductors of GG are more easily corroded or broken than those in plain. To analyze and judge the condition of GG conductors, a mathematic model based on electric circuit and matrix theory is established. To solve the model, the theory of optimization is applied and a linear objective function is proposed. The results of simulation show that this method is an effective way to find the corrosion broken point of GG. It provides a new method for the examination of GG.

关 键 词：冻土 接地网 腐蚀断裂点 优化技术 

分 类 号：TM862[电气工程—高电压与绝缘技术]