Proceedings of the 2018 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018)

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Anti-maloperation Study of Zero-sequence Directional Protection for Three Circuits on the Same Tower

Authors
Yaru Dong, Hui Huang, Jieru Dong
Corresponding Author
Yaru Dong
Available Online March 2018.
DOI
10.2991/mecae-18.2018.90How to use a DOI?
Keywords
three circuits on the same tower, zero-sequence directional protection, zero-sequence voltage compensation, zero-sequence criterion, negative-sequence criterion
Abstract

Based on the limitation of zero-sequence voltage compensation of traditional zero-sequence directional protection principle, an improved anti-maloperation protection strategy is proposed. First of all, by analyzing the characteristics of zero-sequence component, zero-sequence protection principle and maloperation reason of three circuits on the same tower, it is found that zero-sequence voltage over-compensation will change the polarity of zero-sequence voltage and lead to protection maloperation. Considering that the negative-sequence components are not affected by the mutual inductance between lines, a method of introducing negative-sequence components and reducing compensation impedance is proposed, which can reduce the possibility of over-compensating greatly. Based on this, the improved zero-sequence directional protection anti-maloperation logic is constructed. When a longitudinal fault occurs on the line, this method can achieve the purpose of preventing maloperation accurately. Finally, the effectiveness and feasibility of the proposed method are verified by numerical simulation.

Copyright
© 2018, 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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Volume Title
Proceedings of the 2018 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018)
Series
Advances in Engineering Research
Publication Date
March 2018
ISBN
978-94-6252-493-4
ISSN
2352-5401
DOI
10.2991/mecae-18.2018.90How to use a DOI?
Copyright
© 2018, 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/).

Cite this article

risenwbib
TY  - CONF
AU  - Yaru Dong
AU  - Hui Huang
AU  - Jieru Dong
PY  - 2018/03
DA  - 2018/03
TI  - Anti-maloperation Study of Zero-sequence Directional Protection for Three Circuits on the Same Tower
BT  - Proceedings of the 2018 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018)
PB  - Atlantis Press
SP  - 523
EP  - 529
SN  - 2352-5401
UR  - https://doi.org/10.2991/mecae-18.2018.90
DO  - 10.2991/mecae-18.2018.90
ID  - Dong2018/03
ER  -