E3S Web Conf.
Volume 25, 2017Methodological Problems in Reliability Study of Large Energy Systems (RSES 2017)
|Number of page(s)||5|
|Section||Reliability problems of energy systems and the practice of their solution|
|Published online||01 December 2017|
On low-resistance neutral earthing mode in 20 kV overhead and cable networks
Public company «United Energy Company», 115035 Raushskaya Naberezhnaya, 8, Russian Federation
2 National Research University «Moscow Power Engineering Institute», 111250 Krasnokazarmennaya 14, Russian Federation
* Corresponding author: email@example.com
The problems of justification and selection of the required single-phase short-circuit current values in cable and overhead networks of 20 kV with low-resistance neutral earthing are considered. It is shown that the desired values of the short-circuit current can be determined on the basis of harmonization of conflicting influencing factors: reliability of the relay protection and automation devices and required resistances of the earthing devices of electrical installations, including personnel safety. In this case, the main influencing factor is the electrical network structure and parameters
© The Authors, published by EDP Sciences, 2017
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. (http://creativecommons.org/licenses/by/4.0/).
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