The Exploration of Main Protection Configuration Schemes of Internal Short Circuit of Stator Windings for SFD250-20/7500 Motor-Generator

DOI

10.2991/mmme-16.2016.142How to use a DOI?

Keywords

SFD250-20/7500 motor-generator; Internal short circuit; The dead zone of protection operation; Main protection scheme

Abstract

The main protection configuration scheme of internal short circuit for large generators is a prerequisite founda-tion for large generators to run with safety and reliability. Firstly, we sum up the type and the quantity of in-ternal short circuit for stator windings for SFD250-20/7500 motor-generator. Then using the multi-loop analy-sis method, we calculate the current change rule of the short circuit branch and the non-short-circuit branch when this generator is likely to happen to the internal short circuit of the stator windings. Furthermore, we figure up the sensitivity of all kinds of main protection configuration scheme. And we get the location of the dead zone of main protection operation which is easy to form. We ensure the configuration of main protection schemes by synthesizing all kinds of factors. Finally, we analyze and compare it with the actual protection scheme in one project.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chunyu Hu
AU  - Yanling Lü
PY  - 2016/10
DA  - 2016/10
TI  - The Exploration of Main Protection Configuration Schemes of Internal Short Circuit of Stator Windings for SFD250-20/7500 Motor-Generator
BT  - Proceedings of the 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering
PB  - Atlantis Press
SP  - 602
EP  - 605
SN  - 2352-5401
UR  - https://doi.org/10.2991/mmme-16.2016.142
DO  - 10.2991/mmme-16.2016.142
ID  - Hu2016/10
ER  -