Substation Grounding Study Input Parameter Sensitivity Analysis

被引:0
|
作者
Wu, Xuan [1 ]
Simha, Vinod [1 ]
Wellman, Ronald J. [1 ]
Thakur, Manish [1 ]
机构
[1] Amer Elect Power Co, Stn Engn Dept, New Albany, OH 43054 USA
来源
2018 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING (IAS) | 2018年
关键词
Substation ground grid; touch potential; input parameter sensitivity analysis; fault distribution; FAULT CURRENT DISTRIBUTION; SOIL;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
this paper focuses on the substation grounding study input parameters which significantly impact the touch or step potential calculations and the ground grid design. The input information includes the soil resistivity measurement, fault current, clearing time, and T-Line information, which are discussed in detail. Many of those input parameters are difficult to be accurately gathered or varies due to environmental or system changes. As a result, a sensitivity analysis of the input parameters is useful to identify the most influential parameters. The result shows soil resistivity, number of shield wires, and shield wire material are important. In addition, distinguishing the switching and auto-transformer stations from the true source stations during the fault current distribution analysis is also necessary. A few recommendations for improving the input parameter qualities are also provided.
引用
收藏
页数:7
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