A New Principle of Distance Protection for the UHV GIL-Overhead Hybrid Line Based on Frequency Domain Lossless Transmission Line Equation

Botong Li, Tianfeng Gu, Bin Li, Xiaolong Chen and Weijie Wen
Additional contact information
Botong Li: The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Tianfeng Gu: The State Grid Tianjin Chengdong Electric Power Supply Company, Tianjin 300010, China
Bin Li: The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Xiaolong Chen: The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Weijie Wen: The Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China

Energies, 2019, vol. 12, issue 23, 1-12

Abstract: The Gas-insulated Line (GIL) is a technical equipment that allows power transmission underground at high voltage level. The UHV GIL-overhead hybrid transmission line is an essential way for power transmission in complicated landscapes. Because of the distributed capacitance of the UHV transmission line and the difference of the structure and the electrical parameters between GIL and overhead transmission line, the distance protection based on uniform lumped parameters cannot be applied to this hybrid transmission line directly. In order to overcome the shortcomings, this paper studies and proposes a new principle of distance protection for the UHV GIL-overhead hybrid transmission line based on frequency domain lossless transmission line equation, with the distributed capacitance accounted. Then, the paper presents a setting scheme for this distance protection with the hybrid line parameters considered. Finally, tests are carried out on the Power Systems Computer Aided Design (PSCAD) platform, and the accuracy and reliability of the distance protection method proposed are verified by simulation results.

Keywords: distance protection; Gas-insulated Line; hybrid line; UHV transmission line (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/23/4481/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/23/4481/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:23:p:4481-:d:290592

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().