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Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents

The microgrid (MG) is a coordinated collection of different distributed generation (DG) types that supply local demand through a distribution network. MG may operate in two different modes: grid-connected (GC), and islanded (IS) modes. The fault current value varies significantly between the GC and...

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Main Authors: Alhadrawi, Zaid, Abdullah, M.N., Mokhlis, Hazlie
Format: Article
Published: Penerbit UTHM 2022
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/43730/
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spelling my.um.eprints.437302023-10-23T06:25:40Z http://eprints.um.edu.my/43730/ Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents Alhadrawi, Zaid Abdullah, M.N. Mokhlis, Hazlie TA Engineering (General). Civil engineering (General) The microgrid (MG) is a coordinated collection of different distributed generation (DG) types that supply local demand through a distribution network. MG may operate in two different modes: grid-connected (GC), and islanded (IS) modes. The fault current value varies significantly between the GC and IS mode for a MG with inverter-based distributed generators (IBDGs). The fault currents are minimal in the IS mode owing to the power electronics equipment have a limited current carrying capacity. Therefore, the coordination of traditional overcurrent (OC) protection is difficult for these two operation modes. Therefore, a comprehensive MG protection scheme should be established to safeguard MG against all kinds of faults. The main protection strategy proposed in this paper is a positive sequence differential current protection scheme. The envisioned concept can overcome the protective device coordination problems, and all fault types can be detected during both operation modes of MG for radial and loop configurations. The validation of the proposed design is performed using PSCAD/EMTDC software. The results indicate that the maximum fault clearing time for the main protection in GC mode and IS mode is of 31.5 ms and 34 ms respectively. Compared with other schemes, the proposed scheme has a faster clearing time and is less expensive. © Universiti Tun Hussein Onn Malaysia Publisher’s Office Penerbit UTHM 2022 Article PeerReviewed Alhadrawi, Zaid and Abdullah, M.N. and Mokhlis, Hazlie (2022) Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents. International Journal of Integrated Engineering, 14 (6). 239 – 252. ISSN 2229-838X, DOI https://doi.org/10.30880/ijie.2022.14.06.021 <https://doi.org/10.30880/ijie.2022.14.06.021>. 10.30880/ijie.2022.14.06.021
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Alhadrawi, Zaid
Abdullah, M.N.
Mokhlis, Hazlie
Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
description The microgrid (MG) is a coordinated collection of different distributed generation (DG) types that supply local demand through a distribution network. MG may operate in two different modes: grid-connected (GC), and islanded (IS) modes. The fault current value varies significantly between the GC and IS mode for a MG with inverter-based distributed generators (IBDGs). The fault currents are minimal in the IS mode owing to the power electronics equipment have a limited current carrying capacity. Therefore, the coordination of traditional overcurrent (OC) protection is difficult for these two operation modes. Therefore, a comprehensive MG protection scheme should be established to safeguard MG against all kinds of faults. The main protection strategy proposed in this paper is a positive sequence differential current protection scheme. The envisioned concept can overcome the protective device coordination problems, and all fault types can be detected during both operation modes of MG for radial and loop configurations. The validation of the proposed design is performed using PSCAD/EMTDC software. The results indicate that the maximum fault clearing time for the main protection in GC mode and IS mode is of 31.5 ms and 34 ms respectively. Compared with other schemes, the proposed scheme has a faster clearing time and is less expensive. © Universiti Tun Hussein Onn Malaysia Publisher’s Office
format Article
author Alhadrawi, Zaid
Abdullah, M.N.
Mokhlis, Hazlie
author_facet Alhadrawi, Zaid
Abdullah, M.N.
Mokhlis, Hazlie
author_sort Alhadrawi, Zaid
title Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
title_short Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
title_full Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
title_fullStr Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
title_full_unstemmed Differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
title_sort differential protection scheme for a micro grid with inverter-type sources based on positive sequence fault currents
publisher Penerbit UTHM
publishDate 2022
url http://eprints.um.edu.my/43730/
_version_ 1781704695835787264
score 13.211869

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