| Issue |
E3S Web Conf.
Volume 267, 2021
7th International Conference on Energy Science and Chemical Engineering (ICESCE 2021)
|
|
|---|---|---|
| Article Number | 02058 | |
| Number of page(s) | 4 | |
| Section | Environmental Chemistry Research and Chemical Preparation Process | |
| DOI | https://doi.org/10.1051/e3sconf/202126702058 | |
| Published online | 04 June 2021 | |
Comparison of Grounding Grid Parameters Between Copper and Galvanized Flat Steel
1 State Key Laboratory of Power Grid Safety and Energy Conservation, Relay Protection Research Department, China Electric Power Research Institute, Beijing, 100192, China
2 State Grid Zhejiang Electric Power Co., Ltd. Research Institute, China
3 State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
* Corresponding author’s e-mail:120192201285@ncepu.edu.cn
In the intelligent substation, the shell of the secondary equipment is connected to the ground grid locally. When the short circuit fault current is injected into the grounding grid to cause the ground potential rise, the potential difference between the two points of the grounding grid will affect the normal operation of the secondary equipment. In this paper, aiming at the grounding grid of a 220kV substation, the grounding impedance, ground potential rise and ground potential difference between galvanized flat steel and copper grounding grid are calculated by using CDEGS software. The results show that the copper ground grid has a significant effect on reducing the potential difference of the ground grid.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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