Three-phase fault direction identification method for outgoing transmission line of DFIG-based wind farms

Doubly-fed induction generator (DFIG)-based wind farm has the characteristic of transient fault with low voltage ride through (LVRT) capability. A new three-phase fault direction identification method for the outgoing transmission line of the wind farm is presented. The ability of the new directiona...

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Bibliographic Details
Published inJournal of modern power systems and clean energy Vol. 7; no. 5; pp. 1155 - 1164
Main Authors FAN, Zhanfeng, SONG, Guobing, KANG, Xiaoning, TANG, Jisi, WANG, Xiaobo
Format Journal Article
LanguageEnglish
Published Singapore Springer Singapore 01.09.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
IEEE
Subjects
Amplitudes
Directional relay
Doubly-fed induction generator (DFIG)
Electrical Machines and Networks
Energy
Energy Systems
Induction generators
Low voltage
Outgoing transmission line
Phase shift
Power Electronics
Reliability analysis
Renewable and Green Energy
Sensitivity analysis
Transmission lines
Wind farm
Wind farms
Wind power
Wind power generation
Outgoing transmission line
Wind farm
Doubly-fed induction generator (DFIG)
Directional relay
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Summary:Doubly-fed induction generator (DFIG)-based wind farm has the characteristic of transient fault with low voltage ride through (LVRT) capability. A new three-phase fault direction identification method for the outgoing transmission line of the wind farm is presented. The ability of the new directional relay to differentiate between a three-phase fault in one direction or the other is obtained by using the increment of phase angle difference between the memory voltage signal and the fault current signal within a certain time, and using the amplitude variation of the fault current. It can be inferred that the fault current is supplied by the wind farm whether the phase angle differs or the current amplitude varies considerably. Different fault locations at the outgoing transmission line have been simulated by PSCAD/EMTDC to evaluate the reliability and sensitivity of the proposed technique. Results show that the new directional relay is of faster response when a three-phase fault occurs at the outgoing transmission line of a DFIG-based wind farm.
ISSN:2196-5625
2196-5420
DOI:10.1007/s40565-018-0485-2