The Soil Resistivity Influence on the Electrical Safety in Medium-Voltage Power Grids with a Predominant Cable Part

被引：1

作者：

Yordanova, Marinela ^{[1
]}

Mehmed-Hamza, Mediha ^{[1
]}

Stanchev, Plamen ^{[2
]}

机构：

[1] Med Univ Varna, Dept Med Equipment Elect & Informat Technol Hlth, Varna 9002, Bulgaria

[2] Med Univ Varna, Dept Elect Power Engn, Varna 9002, Bulgaria

来源：

7TH INTERNATIONAL CONFERENCE ON ENERGY EFFICIENCY AND AGRICULTURAL ENGINEERING (EE&AE) | 2020年

关键词：

power grids; touch voltage; step voltage; grounding;

D O I：

10.1109/eeae49144.2020.9279020

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The nowadays bigger part of the medium voltage power grids is a cable part and the earth-fault currents increase. When the capacitive current at single phase to earth current is greater than 10 A, the neutral of the grids has to be grounded. The aim of the paper is to investigate eventual voltages (touch and step) at place of the earth fault in the grids when the soil resistivity has high values. To be possible to analyze the acceptability of the voltages' values they were compared with values, received using formulas from an international standard of IEEE.

引用

页数：4

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