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首页> 外文期刊>Electric power systems research >Earth conductivity and permittivity data measurements: Influence in transmission line transient performance
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Earth conductivity and permittivity data measurements: Influence in transmission line transient performance

机译：接地电导率和介电常数数据测量：对传输线瞬态性能的影响

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摘要

In this work some procedures to measure and model soil electromagnetic behavior in frequency domain are presented. The soil samples were collected at Cachoeira Paulista, Brazil, southeastern region (22°41.2′S, 44°59.0′W). The proposed model takes into account the earth conductivity and permittivity frequency dependence. Some procedures to reduce noise signals in the field measurement values are presented. The parameters of an actual 440 kV single three-phase transmission line were evaluated in frequency domain (considering the proposed soil model and the common representation with a constant conductivity and no permittivity), such as longitudinal line parameters, attenuation factor, phase velocity and transfer function. It was possible to identify regions where not considering the proposed model could result in severe error.
机译：在这项工作中，提出了一些在频域上测量和模拟土壤电磁行为的程序。在巴西东南部地区Cachoeira Paulista（22°41.2'S，44°59.0'W）收集土壤样品。所提出的模型考虑了地球电导率和介电常数的频率依赖性。提出了一些减少现场测量值中的噪声信号的程序。在频域中评估了一条实际的440 kV单一三相输电线路的参数（考虑了提出的土壤模型以及具有恒定电导率和无介电常数的通用表示形式），例如纵向线路参数，衰减系数，相速度和传递功能。可以确定不考虑建议的模型可能导致严重错误的区域。

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