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Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid

Received: 13 August 2017     Accepted: 29 August 2017     Published: 21 November 2017
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Abstract

Toshka is a large water pumping stations in Egypt. This station contains 21 units (18+3 Extentions) each 12MW. At a full capacity the full power consumptions can reach 200MW. The electrical feeding system for the stations contains; transformer, substations and Overhead transmission line (its long 300km), so the operations of the stations causes some problem for the electrical grid due to large value of power consumptions. In this paper, some problems were studied during the operations of the station. Effect of starting time on the station running and current consuming were studied. Also the effect of water level variations on the suctions side in Nasser Lake, speed changing, and power quality of the grid on the power consumptions. It was focused on the voltage and current variations, and the flicker occurred during the station operation. Finally the effects of number of harmonic filters used depending on the power rating of the unit, and effective short circuit ratio (ESCR) values on the stability of the electrical grid during the full load operations. The analyses of the results are obtained from actual measurement on the stations using modern power quality analyzers during different cases of operation are explained. This study is more useful for studying the problem occurred on the electrical grid during running of Toshka Stations, as it’s a large station in Egypt and has special design, at different cases and conditions of operation.

Published in American Journal of Electrical Power and Energy Systems (Volume 6, Issue 6)
DOI 10.11648/j.epes.20170606.13
Page(s) 94-112
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), 2017. Published by Science Publishing Group

Keywords

Pumping Stations, Power Quality, Electrical Grid Stability, Harmonic Contents

References
[1] MWRI, NWRC, “Toshka the first initiative of the comprehensive development in the South Valley”, 2000.
[2] MERI, “Study and Analysis of Mubarak Pumping Station Electrical Performance: 18 Units Test”, Technical Report, April, 2008.
[3] M.-H. Lim, B. W. Ahn, B. G. Kim, “Put investigation on the energy saving method using inverter driving for cooling pump at training ship”, Journal of the Korean Society of Marine Engineering, 33 (6), 880–885,(2009).
[4] S.-H. Suh. K. W. Kim, H. H. Kim, I. S. Yoon, M.-T. Cho, et al., “A study on energy saving rate for variable speed condition of multistage centrifugal pump”, Journal of Thermal Science 24 (6), 566–573, (2015).
[5] S.-H. Kim, J.-H. Kim, C.-Y. Jang, K.-d. Song, “The analysis of life cycle cost and cooling water circulating pump energy saving according to variable speed pressure differential set point control strategy”, KIEAE Journal 15 (4), 37–43, (2015).
[6] S.-H. Suh. H.-H. Kim, R. Rakibuzzaman, K.-W. Kim, I.-S. Yoon, “A study on the performance evaluation of variable-speed drive pump”, The KSFM Journal of Fluid Machinery 17 (5), 83–88, (2014).
[7] Rakibuzzamana, Kyungwuk Kima, Hyoung-Ho Kima, Sang-Ho, “Energy saving rates for a multistage centrifugal pump with variable speed drive”, Journal of Power Technologies, P (1–6), 2016.
[8] Jacques Schonek, “Energy efficiency: benefits of variable speed control in pumps, fans and compressors”, May 2008, http://www.technicalpublications.schneider-electric.com
[9] Khaled Fetyan, Mustafa Abu-Zied, Sami Abdelfattah, “Electrical performance of 18 unit (216 MW) operation of Toshka pumping station”, Fifteenth International Middle East Power Systems Conference, Alexandria, Egypt, December 23-25, 2012, (MEPCON'12).
[10] Khaled fetyan, Mustafa Abu-zied, Sami Abdelfatah, “Effects of harmonics filters on the operation and performance of Toshka pumping station”, Al-Azhar university engineering journal, jaues, Vol. 7, No. 3, p 236-246, Dec. 2012.
[11] B. Davies, A. Williamson, and S. Filizadeh, “Systems with multiple DC infeed”, CIGRÉ Working Group B4.41. Dec. 2008, Publ. 364.
[12] E. Rahim, A. M. Gole, and J. B. Davies, “Analysis of multi -infeed HVDC systems with inverter and rectifier connected to the same AC network,” IET International Conference on AC/ DC Power Transmission, London, England, 2010.
[13] Z. Liu, Y. Biao, W. Zhang, and Y. Zhang, “Study on voltage class series for HVDC transmission system”, Proceedings of the CSEE, vol. 28, pp. 1-8, Apr. 2008.
[14] D. Lee and G. Anderson, “Voltage stability analysis of multi-infeed HVDC systems,” IEEE Trans. Power Del., Vol. 12, No. 3, pp. 1309-1317, July. 1997.
[15] D. Lee and G. Anderson, “Power stability analysis of multi-infeed HVDC systems,” IEEE Trans. Power Del., Vol. 13, No. 1, pp: 923-931, July. 1998.
[16] C. G. Hodge, J O Flower, A Macalindin, “DC power system stability”, Paper presented at ESTS 2009, Baltimore, Maryland, USA.
[17] Feng Wang & Yu Chen, “Voltage/Power Stability Study upon Power System with Multiple-Infeed Configuration of HVDC Links Using Quasi-static Modal Analysis Approach”, Master’s thesis, Power System, ABB, Ludvika, March, 2006.
[18] Shiwu Liao, Wei Yao, Xiaomeng Ai, Jinyu Wen, and Jingzhe, “An Improved Multi-Infeed Effective Short-Circuit Ratio for AC/DC Power Systems with Massive Shunt Capacitors Installed”, Energies 2017, 10, 396; doi: 10.3390. En10030396.
[19] MERI internal report, “Electrical performance of Toshka pumping stations in the first run”, August 2007.
[20] MERI internal report, “Electrical performance of Toshka pumping stations in first operations test (16 units)”, April 2008.
[21] Hitachi. ltd, report, “18 units operations test supplement reply”, May 2008.
Cite This Article
  • APA Style

    Khaled Mohamed Kotb Fetyan. (2017). Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid. American Journal of Electrical Power and Energy Systems, 6(6), 94-112. https://doi.org/10.11648/j.epes.20170606.13

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    ACS Style

    Khaled Mohamed Kotb Fetyan. Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid. Am. J. Electr. Power Energy Syst. 2017, 6(6), 94-112. doi: 10.11648/j.epes.20170606.13

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    AMA Style

    Khaled Mohamed Kotb Fetyan. Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid. Am J Electr Power Energy Syst. 2017;6(6):94-112. doi: 10.11648/j.epes.20170606.13

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  • @article{10.11648/j.epes.20170606.13,
      author = {Khaled Mohamed Kotb Fetyan},
      title = {Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid},
      journal = {American Journal of Electrical Power and Energy Systems},
      volume = {6},
      number = {6},
      pages = {94-112},
      doi = {10.11648/j.epes.20170606.13},
      url = {https://doi.org/10.11648/j.epes.20170606.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20170606.13},
      abstract = {Toshka is a large water pumping stations in Egypt. This station contains 21 units (18+3 Extentions) each 12MW. At a full capacity the full power consumptions can reach 200MW. The electrical feeding system for the stations contains; transformer, substations and Overhead transmission line (its long 300km), so the operations of the stations causes some problem for the electrical grid due to large value of power consumptions. In this paper, some problems were studied during the operations of the station. Effect of starting time on the station running and current consuming were studied. Also the effect of water level variations on the suctions side in Nasser Lake, speed changing, and power quality of the grid on the power consumptions. It was focused on the voltage and current variations, and the flicker occurred during the station operation. Finally the effects of number of harmonic filters used depending on the power rating of the unit, and effective short circuit ratio (ESCR) values on the stability of the electrical grid during the full load operations. The analyses of the results are obtained from actual measurement on the stations using modern power quality analyzers during different cases of operation are explained. This study is more useful for studying the problem occurred on the electrical grid during running of Toshka Stations, as it’s a large station in Egypt and has special design, at different cases and conditions of operation.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid
    AU  - Khaled Mohamed Kotb Fetyan
    Y1  - 2017/11/21
    PY  - 2017
    N1  - https://doi.org/10.11648/j.epes.20170606.13
    DO  - 10.11648/j.epes.20170606.13
    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  - 94
    EP  - 112
    PB  - Science Publishing Group
    SN  - 2326-9200
    UR  - https://doi.org/10.11648/j.epes.20170606.13
    AB  - Toshka is a large water pumping stations in Egypt. This station contains 21 units (18+3 Extentions) each 12MW. At a full capacity the full power consumptions can reach 200MW. The electrical feeding system for the stations contains; transformer, substations and Overhead transmission line (its long 300km), so the operations of the stations causes some problem for the electrical grid due to large value of power consumptions. In this paper, some problems were studied during the operations of the station. Effect of starting time on the station running and current consuming were studied. Also the effect of water level variations on the suctions side in Nasser Lake, speed changing, and power quality of the grid on the power consumptions. It was focused on the voltage and current variations, and the flicker occurred during the station operation. Finally the effects of number of harmonic filters used depending on the power rating of the unit, and effective short circuit ratio (ESCR) values on the stability of the electrical grid during the full load operations. The analyses of the results are obtained from actual measurement on the stations using modern power quality analyzers during different cases of operation are explained. This study is more useful for studying the problem occurred on the electrical grid during running of Toshka Stations, as it’s a large station in Egypt and has special design, at different cases and conditions of operation.
    VL  - 6
    IS  - 6
    ER  - 

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Author Information
  • Mechanical and Electrical Research Institute, National Water Research Centre, Ministry of Water Resources and Irrigation, Cairo, Egypt

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