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An Overview of the Technical Challenges Facing the Deployment of Electric Cooking on Hybrid PV/Diesel Mini-Grid in Rural Tanzania—A Case Study Simulation

Author

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  • Shafiqa Keddar

    (Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

  • Scott Strachan

    (Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

  • Bartosz Soltowski

    (Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

  • Stuart Galloway

    (Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

Abstract

This paper lays out a methodology that could be used by mini-grid developers to assess the design readiness and future design requirement to accommodate electric cooking (eCook). While mini-grids in developing countries continue to grow in popularity, typically their designs are not yet sufficiently developed to accommodate large power appliances. Moving towards clean cooking using electricity will cause technical risks for mini-grids in terms of voltage drop, voltage unbalances and capacity shortage. In this paper, these parameters are studied on a mini-grid network modeled in OpenDSS/MATLAB as a simulation platform, where the selected mini-grid topology is hub and spoke. Two network studies are considered, the first investigates the limitations of the mini-grid in terms of the generation capacity available to supply the demand for different levels of eCook penetration, while the second focuses on the network constraints for different eCook penetrations. In general, the results show that voltage drop and voltage imbalance issues can be reasonably and affordably addressed by using cables of a larger cross-sectional area. The main issue prohibiting higher penetrations of eCook centre on generation capacity requirements, which led to a techno-economic analysis being conducted to assess future mini-grid sizes as well as targeting economic and environmental objectives and meeting the overall demand on a generically representative mini-grid in a rural region in East Africa. The discussion section in this paper highlights the main barriers to the accommodation of eCook on rural mini-grids and presents suggestions for future work that addresses new design specifications for the next generation of eCook mini-grids.

Suggested Citation

  • Shafiqa Keddar & Scott Strachan & Bartosz Soltowski & Stuart Galloway, 2021. "An Overview of the Technical Challenges Facing the Deployment of Electric Cooking on Hybrid PV/Diesel Mini-Grid in Rural Tanzania—A Case Study Simulation," Energies, MDPI, vol. 14(13), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3761-:d:580520
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    References listed on IDEAS

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    1. Matthew Leach & Chris Mullen & Jacquetta Lee & Bartosz Soltowski & Neal Wade & Stuart Galloway & William Coley & Shafiqa Keddar & Nigel Scott & Simon Batchelor, 2021. "Modelling the Costs and Benefits of Modern Energy Cooking Services—Methods and Case Studies," Energies, MDPI, vol. 14(12), pages 1-28, June.
    2. Simon Batchelor & Ed Brown & Nigel Scott & Jon Leary, 2019. "Two Birds, One Stone—Reframing Cooking Energy Policies in Africa and Asia," Energies, MDPI, vol. 12(9), pages 1-18, April.
    3. McKenna, Eoghan & Thomson, Murray, 2016. "High-resolution stochastic integrated thermal–electrical domestic demand model," Applied Energy, Elsevier, vol. 165(C), pages 445-461.
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    1. Shafiqa Keddar & Scott Strachan & Stuart Galloway, 2022. "A Smart eCook Battery-Charging System to Maximize Electric Cooking Capacity on a Hybrid PV/Diesel Mini-Grid," Sustainability, MDPI, vol. 14(3), pages 1-21, January.
    2. Shafiqa Keddar & Scott Strachan & Stuart Galloway, 2022. "Bridging the Affordability between Battery-Supported Electric Cooking and Conventional Cooking Fuel," Energies, MDPI, vol. 15(24), pages 1-13, December.
    3. Simon Batchelor & Ed Brown & Nigel Scott & Matthew Leach & Anna Clements & Jon Leary, 2022. "Mutual Support—Modern Energy Planning Inclusive of Cooking—A Review of Research into Action in Africa and Asia since 2018," Energies, MDPI, vol. 15(16), pages 1-29, August.
    4. Olabisi, Michael & Richardson, Robert B., 2022. "Why the poor pay higher energy prices: Evidence from Tanzania," World Development Perspectives, Elsevier, vol. 26(C).

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