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...
Saved in:
| Date: | 2020 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут електродинаміки НАН України, Київ
2020
|
| Subjects: | |
| Online Access: | https://techned.org.ua/index.php/techned/article/view/335 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Technical Electrodynamics |
Institution
Technical Electrodynamics| Summary: | 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. |
|---|