Influence of Grounded Transformers on the Sensitivity of Ground Distance

DOI

10.2991/aer.k.220308.014How to use a DOI?

Keywords

Distancee earth fault protection; sensitivity; Zero sequence current compensation; Grounded transformers

Abstract

Distance protection allows you to protect power lines from short circuits to the ground. There are a lot of grounded transformers in the power system, which are a source of recharge current in case of short circuits to earth. This recharge affects the operation of distance protection and may cause non-selective disconnection of damage on the line. A power system model was built in the PSCAD software package, which showed the operation of distance protection in case of a short circuit to earth in a network with grounded transformers. Simulation analysis showed that the sensitivity of distance protection decreases in the presence of grounded transformers. It is possible to increase the sensitivity by increasing the compensation coefficient of the zero-sequence current from the calculated nominal value.

Copyright

© 2022 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Maksim Semenov
PY  - 2022
DA  - 2022/03/24
TI  - Influence of Grounded Transformers on the Sensitivity of Ground Distance
BT  - Proceedings of the International Scientific and Practical Conference "Young Engineers of the Fuel and Energy Complex: Developing the Energy Agenda of the Future" (EAF 2021)
PB  - Atlantis Press
SP  - 84
EP  - 90
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.220308.014
DO  - 10.2991/aer.k.220308.014
ID  - Semenov2022
ER  -