ДОСЛІДЖЕННЯ АЛГОРИТМА ІМПЕДАНСНО-ДИФЕРЕНЦІАЛЬНОГО ЗАХИСТУ ЯК ЛОКАТОРA ПОШКОДЖЕНЬ ДЛЯ ЛІНІЇ ЕЛЕКТРОПЕРЕДАЧІ
This paper deals with an analysis of impedance-differential protection algorithm applied to locate faults on a double-circuit transmission line. In particular, the study of fault location accuracy for the case of using the relation between currents for negative-sequence not for zero-sequence, as it...
Збережено в:
| Дата: | 2020 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут електродинаміки НАН України, Київ
2020
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| Теми: | |
| Онлайн доступ: | https://techned.org.ua/index.php/techned/article/view/335 |
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| Назва журналу: | Technical Electrodynamics |
Репозитарії
Technical Electrodynamics| Резюме: | This paper deals with an analysis of impedance-differential protection algorithm applied to locate faults on a double-circuit transmission line. In particular, the study of fault location accuracy for the case of using the relation between currents for negative-sequence not for zero-sequence, as it was presented so far, is provided. It results from the well-known fact that zero-sequence impedances are in practice considered as quite unreliable data. Therefore, one has to limit usage of zero-sequence impedance parameters as much as possible. Such approach was applied in this paper and therefore the use of the additional relation of currents for negative-sequence is under investigation. The fault signals from ATP-EMTP simulation on the sample double-circuit transmission line was applied for evaluating the fault location accuracy. References 8, figures 4, table 1. |
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