Unsynchronized Phasor-Based Protection Method for Single Line-to-GroundFaults in an Ungrounded Offshore Wind Farm with Fully-RatedConverters-Based Wind Turbines

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486749.do
DOI
10.3390/en10040526
Title
Unsynchronized Phasor-Based Protection Method for Single Line-to-GroundFaults in an Ungrounded Offshore Wind Farm with Fully-RatedConverters-Based Wind Turbines
Description
This research was supported in part by Basic Science Research Programthrough the National Research Foundation of Korea (NRF) funded by theMinistry of Education (No. NRF-2013R1A1A2062924). This research was alsosupported in part by the Human Resources Program in Energy Technology ofthe Korea Institute of Energy Technology Evaluation and Planning(KETEP), and granted financial resources from the Ministry of Trade,Industry & Energy, Republic of Korea (No. 20154030200770).
abstract
This paper proposes a protection method for single line-to-ground (SLG) faults in an ungrounded offshore wind farm with fully-rated converter-based wind turbines. The proposed method uses the unsynchronized current phasors measured by unit protections installed at the connection point of the fully-rated converter (FRC)-based wind turbines (WTs). Each unit protection collects the unsynchronized current phasors from two adjacent nodes and synchronizes them by aligning the positive-sequence current to the same phase angle. The faulted section is identified by comparing the phase angles of the synchronized zero-sequence currents from adjacent nodes. Simulations of an ungrounded offshore wind farm with relay models were carried out using power system computer-aided design (PSCAD)/electromagnetic transients including direct current (EMTDC).
provenance
Made available in Cube on 2018-09-28T16:15:54Z (GMT). No. of bitstreams: 0
language
English
author
Jing, Liuming
Son, Dae-Hee
Kang, Sang-Hee
Nam, Soon-Ryul
accessioned
2018-09-28T16:15:54Z
available
2018-09-28T16:15:54Z
issued
2017
citation
ENERGIES(10): 4
issn
1996-1073
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486749.do
Funder
산업통상자원부
Funding Program
에너지인력양성(전력기금)
Project ID
1415154476
Jurisdiction
Rep.of Korea
Project Name
Advanced Track for Microgrid Interoperability Technologies
rights
openAccess
subject
fully-rated converter-based wind turbines
offshore wind farm
singleline-to-ground fault
unit protection
type
article


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