基于ATP-EMTP的接地网电流注入点腐蚀性能研究  

Study on corrosion resistance of grounding grids' injection point based on ATP-EMTP

作　　者：付娟[1] 丁涛 

机构地区：[1]西安铁路职业技术学院电气工程系,陕西西安710014 [2]西安市学校后勤服务管理中心,陕西西安710014

出　　处：《电子设计工程》2010年第12期111-113,共3页Electronic Design Engineering

摘　　要：为了分析接地网电流注入点腐蚀后的性能,建立了一种接地网不等电位模型。利用节点电压方程和导体之间互阻抗的关系,形成ATP-EMTP仿真等效电路。通过对接地网电流注入点处导体腐蚀断线情况下地表电位分布的仿真计算,可以看出电流注入点附近的地电位升变得很高,而且斜率很大,增加了跨步电压的危险和多点接地设备受损的可能。研究表明,接地网应重点加强电流注入点附近的强度和抗腐蚀性能。In order to analyze the capability of the injection point of the grounding grid after corrosion, this paper built a model of electrical grounding system with unequal pressure. Using the relationship of the inner trans-resistance and trans-induetance of conductor and mutual-impedance between conductors, a simulated equivalent circuit ATP-EMTP is established. Through simulating the distributing of the surface potential distribution of the grounding grid injection point in the case of grounding system conductor distributing corrosion destruction, the conclusion is that potential rising on earth and the slope nearby the injection point were so high, it increased the possibility about the dangerous of the step voltage and the damage of more point grounding equipments. The research in this paper indicated that the grounding grid should reinforce the corrosion resistance nearby the injection point.

关 键 词：接地网 地表电位分布 腐蚀破坏 电磁暂态仿真程序(EMTP) 电流注入点 

分 类 号：TM63[电气工程—电力系统及自动化] TM862