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Using OLTC-Fitted Distribution Transformer to Increase Residential PV Hosting Capacity: Decentralized Voltage Management Approach

Author

Listed:
  • Muhammed Sait Aydin

    (Faculty of Engineering, Siirt University, Siirt 56100, Turkey)

  • Sahban W. Alnaser

    (Department of Electrical Engineering, University of Jordan, Amman 11942, Jordan)

  • Sereen Z. Althaher

    (Department of Electrical Engineering, University of Jordan, Amman 11942, Jordan)

Abstract

The increasing Photovoltaic (PV) penetration in residential Low Voltage (LV) networks is likely to result in a voltage rise problem. One of the potential solutions to deal with this problem is to adopt a distribution transformer fitted with an On-Load Tap Changer (OLTC). The control of the OLTC in response to local measurements reduces the need for expensive communication channels and remote measuring devices. However, this requires developing an advanced decision-making algorithm to estimate the existence of voltage issues and define the best set point of the OLTC. This paper presents a decentralized data-driven control approach to operate the OLTC using local measurements at a distribution transformer (i.e., active power and voltage at the secondary side of the transformer). To do so, Monte Carlo simulations are utilized offline to produce a comprehensive dataset of power flows throughout the distribution transformer and customers’ voltages for different PV penetrations. By the application of the curve-fitting technique to the resulting dataset, models to estimate the maximum and the minimum customers’ voltages are defined and embedded into the control logic to manage the OLTC in real time. The application of the approach to a real UK LV feeder shows its effectiveness in improving PV hosting capacity without the need for remote monitoring elements.

Suggested Citation

  • Muhammed Sait Aydin & Sahban W. Alnaser & Sereen Z. Althaher, 2022. "Using OLTC-Fitted Distribution Transformer to Increase Residential PV Hosting Capacity: Decentralized Voltage Management Approach," Energies, MDPI, vol. 15(13), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:13:p:4836-:d:853758
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    References listed on IDEAS

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    1. Shabib Shahid & Saifullah Shafiq & Bilal Khan & Ali T. Al-Awami & Muhammad Omair Butt, 2021. "A Machine Learning-Based Communication-Free PV Controller for Voltage Regulation," Sustainability, MDPI, vol. 13(21), pages 1-22, November.
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    Cited by:

    1. Wenqian Yuan & Xiang Yuan & Longwei Xu & Chao Zhang & Xinsheng Ma, 2023. "Harmonic Loss Analysis of Low-Voltage Distribution Network Integrated with Distributed Photovoltaic," Sustainability, MDPI, vol. 15(5), pages 1-23, February.

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