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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yuxue Wang Xianggen Yin Zhe Zhang Zhenxing Li |
| Copyright Year | 2013 |
| Description | Author affiliation: State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China (Yuxue Wang; Xianggen Yin; Zhe Zhang; Zhenxing Li) |
| Abstract | A stator earth fault protection scheme based on fault current is presented in this paper. It trips out the faulted generator only if the fault current following the breakdown channel exceeds the tolerance capacity of the generator. Otherwise, it will just emit alarm signals. This protection scheme can avoid unnecessary trip-out of large generator, which influences the safe operation of power system, while ensuring the generator security. To achieve the scheme, methods of calculating fault current in real time are provided for three common generator neutral earthing methods basing on the zero-sequence equivalent circuits. An implementation scheme is given on the basis of the sub-harmonic injection protection device. The protection algorithm flow and protection criterion are discussed as well. Simulation results show the accuracy of the fault current calculation method and the validity of the protection scheme. |
| Sponsorship | EPRC |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 270425 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781479932542 |
| DOI | 10.1109/UPEC.2013.6715036 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-09-02 |
| Publisher Place | Ireland |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Earth sub-harmonic injection large generator Grounding Earth fault Stator windings Generators protection stator Circuit faults Fault currents |
| Content Type | Text |
| Resource Type | Article |
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