Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks

Mugisho Mugaruka Josue; Getachew Biru Worku

doi:doi:10.11648/j.epes.20211006.11

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Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks

Mugisho Mugaruka Josue, Getachew Biru Worku

Published in American Journal of Electrical Power and Energy Systems (Volume 10, Issue 6)

Received: 31 October 2021 Accepted: 19 November 2021 Published: 25 November 2021

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Abstract

The structure of railway electrification system is a single-phase line, it uses power electronics devices and has a time varying load characteristic. This is a cause of considerable current unbalance, harmonics and variable reactive power consumption. This usually leads to power quality problems affecting the proper operation of the equipment. Because of the train's unique operation and electrification characteristics, power quality has been a major problem in railway networks. Throughout the history of railway electrification, many research were dedicated to power quality studies. A variety of power conditioning devices have been explored and deployed to traction systems. In this paper, a power quality problem investigation is done by evaluating and measuring major power quality parameters to confirm the mentioned problems on the Ethio-Djibouti railway line. The power quality quantities are measured using Chauvin Arnoux CA 8335 device and relevant data for power quality analysis are extracted using POWER log 5.8 software. Moreover, the power reliability is also evaluated for the same railway network by considering two substations, respectively the Hurso and Adigala substation. The power reliability studies are carried out by considering the recorded outage data due to Overvoltages for a period of one year. The measured data indicates a low power factor which even amounts 0.2, a maximum current unbalance values of 70% and harmonic distortion of 50%. The longest power outage due to over-voltage was 202 hours in January at Adigala substation with a power supply availability of 0.70 p.u in the 2020 years.

Published in	American Journal of Electrical Power and Energy Systems (Volume 10, Issue 6)
DOI	10.11648/j.epes.20211006.11
Page(s)	100-108
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Harmonic Distortion, Power Factor, Power Quality, Unbalanced System and Railway Networks

References

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[2]	Y. Q. Liu, G. P. Wu, H. S. Hua, and L. Wang, ‘Research for the effects of high-speed electrified railway traction load on power quality’, DRPT 2011 - 2011 4th Int. Conf. Electr. Util. Deregul. Restruct. Power Technol., pp. 569–573, 2011, doi: 10.1109/DRPT.2011.5993957.
[3]	S. Hu et al., ‘A New Integrated Hybrid Power Quality Control System for Electrical Railway’, vol. 0046, no. c, 2015, doi: 10.1109/TIE.2015.2420614.
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[9]	A. P. M. Mohamed Tanta, Victor Monterio, Tiago J. C. Sousa, ‘Power Quality Phenomena in Electrified RailwayS: Conventional and New Trends in Power Quality Improvement toward Public Power system’, BMC Public Health, vol. 5, no. 1, pp. 1–8, 2017.
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Mugisho Mugaruka Josue, Getachew Biru Worku. (2021). Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. American Journal of Electrical Power and Energy Systems, 10(6), 100-108. https://doi.org/10.11648/j.epes.20211006.11

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ACS Style

Mugisho Mugaruka Josue; Getachew Biru Worku. Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. Am. J. Electr. Power Energy Syst. 2021, 10(6), 100-108. doi: 10.11648/j.epes.20211006.11

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AMA Style

Mugisho Mugaruka Josue, Getachew Biru Worku. Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. Am J Electr Power Energy Syst. 2021;10(6):100-108. doi: 10.11648/j.epes.20211006.11

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@article{10.11648/j.epes.20211006.11,
  author = {Mugisho Mugaruka Josue and Getachew Biru Worku},
  title = {Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {10},
  number = {6},
  pages = {100-108},
  doi = {10.11648/j.epes.20211006.11},
  url = {https://doi.org/10.11648/j.epes.20211006.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20211006.11},
  abstract = {The structure of railway electrification system is a single-phase line, it uses power electronics devices and has a time varying load characteristic. This is a cause of considerable current unbalance, harmonics and variable reactive power consumption. This usually leads to power quality problems affecting the proper operation of the equipment. Because of the train's unique operation and electrification characteristics, power quality has been a major problem in railway networks. Throughout the history of railway electrification, many research were dedicated to power quality studies. A variety of power conditioning devices have been explored and deployed to traction systems. In this paper, a power quality problem investigation is done by evaluating and measuring major power quality parameters to confirm the mentioned problems on the Ethio-Djibouti railway line. The power quality quantities are measured using Chauvin Arnoux CA 8335 device and relevant data for power quality analysis are extracted using POWER log 5.8 software. Moreover, the power reliability is also evaluated for the same railway network by considering two substations, respectively the Hurso and Adigala substation. The power reliability studies are carried out by considering the recorded outage data due to Overvoltages for a period of one year. The measured data indicates a low power factor which even amounts 0.2, a maximum current unbalance values of 70% and harmonic distortion of 50%. The longest power outage due to over-voltage was 202 hours in January at Adigala substation with a power supply availability of 0.70 p.u in the 2020 years.},
 year = {2021}
}

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TY - JOUR
T1 - Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks
AU - Mugisho Mugaruka Josue
AU - Getachew Biru Worku
Y1 - 2021/11/25
PY - 2021
N1 - https://doi.org/10.11648/j.epes.20211006.11
DO - 10.11648/j.epes.20211006.11
T2 - American Journal of Electrical Power and Energy Systems
JF - American Journal of Electrical Power and Energy Systems
JO - American Journal of Electrical Power and Energy Systems
SP - 100
EP - 108
PB - Science Publishing Group
SN - 2326-9200
UR - https://doi.org/10.11648/j.epes.20211006.11
AB - The structure of railway electrification system is a single-phase line, it uses power electronics devices and has a time varying load characteristic. This is a cause of considerable current unbalance, harmonics and variable reactive power consumption. This usually leads to power quality problems affecting the proper operation of the equipment. Because of the train's unique operation and electrification characteristics, power quality has been a major problem in railway networks. Throughout the history of railway electrification, many research were dedicated to power quality studies. A variety of power conditioning devices have been explored and deployed to traction systems. In this paper, a power quality problem investigation is done by evaluating and measuring major power quality parameters to confirm the mentioned problems on the Ethio-Djibouti railway line. The power quality quantities are measured using Chauvin Arnoux CA 8335 device and relevant data for power quality analysis are extracted using POWER log 5.8 software. Moreover, the power reliability is also evaluated for the same railway network by considering two substations, respectively the Hurso and Adigala substation. The power reliability studies are carried out by considering the recorded outage data due to Overvoltages for a period of one year. The measured data indicates a low power factor which even amounts 0.2, a maximum current unbalance values of 70% and harmonic distortion of 50%. The longest power outage due to over-voltage was 202 hours in January at Adigala substation with a power supply availability of 0.70 p.u in the 2020 years.
VL - 10
IS - 6
ER -

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Author Information

Mugisho Mugaruka Josue

African Railway Center of Excellence, Addis Ababa Institute of Technology, Addis Ababa, Ethiopia
Getachew Biru Worku

Electrical and Computer Engineering, Addis Ababa Institute of Technology, Addis Ababa, Ethiopia

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APA Style

Mugisho Mugaruka Josue, Getachew Biru Worku. (2021). Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. American Journal of Electrical Power and Energy Systems, 10(6), 100-108. https://doi.org/10.11648/j.epes.20211006.11

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ACS Style

Mugisho Mugaruka Josue; Getachew Biru Worku. Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. Am. J. Electr. Power Energy Syst. 2021, 10(6), 100-108. doi: 10.11648/j.epes.20211006.11

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AMA Style

Mugisho Mugaruka Josue, Getachew Biru Worku. Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks. Am J Electr Power Energy Syst. 2021;10(6):100-108. doi: 10.11648/j.epes.20211006.11

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@article{10.11648/j.epes.20211006.11,
  author = {Mugisho Mugaruka Josue and Getachew Biru Worku},
  title = {Study of Power Reliability and Power Quality Problems of the Ethiopian-Djibouti Railway Distribution Networks},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {10},
  number = {6},
  pages = {100-108},
  doi = {10.11648/j.epes.20211006.11},
  url = {https://doi.org/10.11648/j.epes.20211006.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20211006.11},
  abstract = {The structure of railway electrification system is a single-phase line, it uses power electronics devices and has a time varying load characteristic. This is a cause of considerable current unbalance, harmonics and variable reactive power consumption. This usually leads to power quality problems affecting the proper operation of the equipment. Because of the train's unique operation and electrification characteristics, power quality has been a major problem in railway networks. Throughout the history of railway electrification, many research were dedicated to power quality studies. A variety of power conditioning devices have been explored and deployed to traction systems. In this paper, a power quality problem investigation is done by evaluating and measuring major power quality parameters to confirm the mentioned problems on the Ethio-Djibouti railway line. The power quality quantities are measured using Chauvin Arnoux CA 8335 device and relevant data for power quality analysis are extracted using POWER log 5.8 software. Moreover, the power reliability is also evaluated for the same railway network by considering two substations, respectively the Hurso and Adigala substation. The power reliability studies are carried out by considering the recorded outage data due to Overvoltages for a period of one year. The measured data indicates a low power factor which even amounts 0.2, a maximum current unbalance values of 70% and harmonic distortion of 50%. The longest power outage due to over-voltage was 202 hours in January at Adigala substation with a power supply availability of 0.70 p.u in the 2020 years.},
 year = {2021}
}

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