دورية أكاديمية
Extremely low frequency‐based faulty line selection of low‐resistance grounding system
| العنوان: | Extremely low frequency‐based faulty line selection of low‐resistance grounding system |
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| المؤلفون: | Qing Chen, Junran Peng, Hongbin Li, Shiwu Yang, Lei Zhou, Dongxiao Pang, Hu Deng |
| المصدر: | IET Generation, Transmission & Distribution, Vol 15, Iss 10, Pp 1565-1577 (2021) |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Production of electric energy or power. Powerplants. Central stations |
| مصطلحات موضوعية: | Power system protection, Distribution or transmission of electric power, TK3001-3521, Production of electric energy or power. Powerplants. Central stations, TK1001-1841 |
| الوصف: | Abstract The single‐phase‐to‐ground faulty line selection methods based on the signals of the frequency above 10 Hz has a low discrimination of fault characteristic signal and characteristic signal may be covered by noise in cases of high‐resistance fault. To solve the problem, a line selection method based on system's own extremely low frequency signal (SOELFS) is proposed. Due to the obvious attenuation characteristic of extremely low frequency signals in healthy lines, the extremely low frequency signal has a larger discrimination and hardly affected by imbalanced current noise. Moreover, as the amplitude of the SOELFS is affected by the initial phase angle of the fault, an additional line selection method based on artificially injected extremely low frequency signal is proposed. Cooperating with the specially designed and implemented measuring device, simulations and experimental verification are carried out. The results show that the discrimination of characteristic signal increases from 31 obtained by power frequency to more than 500, the high‐resistance fault protection ability increases from 2 to 10 kΩ. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1751-8695 1751-8687 |
| Relation: | https://doaj.org/toc/1751-8687; https://doaj.org/toc/1751-8695 |
| DOI: | 10.1049/gtd2.12087 |
| URL الوصول: | https://doaj.org/article/b4f7c630eba34e9880bf1eb1060afcdd |
| رقم الأكسشن: | edsdoj.b4f7c630eba34e9880bf1eb1060afcdd |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 17518695 17518687 |
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| DOI: | 10.1049/gtd2.12087 |