Grounding Grid Corrosion Diagnosis Based on Large Change Sensitivity

摘要：

The method of corrosion diagnosis for substation grounding grids based on large change sensitivity is proposed. By analyzing the node voltages, the large change sensitivity of the port voltages in response to the branch resistances is given and the nonlinear optimal model of corrosion diagnosis is established. The diagnosis equations based on the differential sensitivity were set up in traditional methods. Contrasting with them, the equations established in the paper is more appropriate for the real corrosion case. To insure the independency of diagnosis equations, the optimal selection method of test ports is put up. The effectiveness of algorithm is validated by the simulation of substation grounding grids.

关键词： grounding grid corrosion diagnosis large change sensitivity nonlinear optimal model

作者: Liqiang Liu Xianjue Luo Tao Niu Kai Wang

作者单位: School of electrical engineering Xian Jiaotong University Xian,China

会议类型: 国际会议

会议名称: The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)

会议地点: 西安

会议语种:英文

页码: 71-74

在线出版日期: 2009-08-18（万方平台首次上网日期，不代表论文的发表时间）