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Voltage Rise Mitigation in PV Rich LV Distribution Networks Using DC/DC Converter Level Active Power Curtailment Method

Author

Listed:
  • Pankaj Verma

    (Poornima College of Engineering, Jaipur 302022, Rajasthan, India)

  • Nitish Katal

    (Indian Institute of Information Technology, Una 177209, Himachal Pradesh, India)

  • Bhisham Sharma

    (Chitkara University School of Engineering and Technology, Chitkara University, Baddi 174103, Himachal Pradesh, India)

  • Subrata Chowdhury

    (SVCET Engineering College & Technology, Chittoor 517127, Andhra Pradesh, India)

  • Abolfazl Mehbodniya

    (Department of Electronics and Communication Engineering, Kuwait College of Science and Technology (KCST), Doha Area, 7th Ring Road, Kuwait City 7207, Kuwait)

  • Julian L. Webber

    (Department of Electronics and Communication Engineering, Kuwait College of Science and Technology (KCST), Doha Area, 7th Ring Road, Kuwait City 7207, Kuwait)

  • Ali Bostani

    (College of Engineering and Applied Sciences, American University of Kuwait, Salmiya 20002, Kuwait)

Abstract

In low voltage (LV) distribution systems, the problem of overvoltage is common during the lower load intervals. This problem arises because of the high value of R/X ration of these systems. Many techniques are available in literature to cope up with this problem at the converter level; mostly these methods control the reactive or active power of the photovoltaic (PV) systems. However, there are certain restrictions and complications with the reactive power control of PV systems. Most of the active power control methods have been implemented at the inverter stage of the PV system, resulting in implementation complexities and excessive oversizing of the converter. Therefore, in this paper, a simple, de-rating based voltage control algorithm is proposed to overcome the problem of overvoltage. So far de-rating technique has been used to enable frequency support functions in PVs; in a first of its kind, de-rating technique is used here to control the voltages in PV rich LV distribution systems. The entire control is implemented on the dc/dc converter stage of the PV system and the inverter stage is kept untouched. The effectiveness of the control is verified by simulating a sample PV-rich three bus LV distribution system on the MATLAB software. The proposed control avoids the overvoltage by approx. 700 V for the best-case scenario.

Suggested Citation

  • Pankaj Verma & Nitish Katal & Bhisham Sharma & Subrata Chowdhury & Abolfazl Mehbodniya & Julian L. Webber & Ali Bostani, 2022. "Voltage Rise Mitigation in PV Rich LV Distribution Networks Using DC/DC Converter Level Active Power Curtailment Method," Energies, MDPI, vol. 15(16), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:16:p:5901-:d:888329
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    References listed on IDEAS

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    1. Collins, L. & Ward, J.K., 2015. "Real and reactive power control of distributed PV inverters for overvoltage prevention and increased renewable generation hosting capacity," Renewable Energy, Elsevier, vol. 81(C), pages 464-471.
    2. Vergara, Pedro P. & Salazar, Mauricio & Mai, Tam T. & Nguyen, Phuong H. & Slootweg, Han, 2020. "A comprehensive assessment of PV inverters operating with droop control for overvoltage mitigation in LV distribution networks," Renewable Energy, Elsevier, vol. 159(C), pages 172-183.
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    Cited by:

    1. Sanjiv Kumar Jain & Sandeep Bhongade & Shweta Agrawal & Abolfazl Mehbodniya & Bhisham Sharma & Subrata Chowdhury & Julian L. Webber, 2023. "Interrelated Solar and Thermal Plant Autonomous Generation Control Utilizing Metaheuristic Optimization," Energies, MDPI, vol. 16(8), pages 1-21, April.
    2. Seung-Taek Lim & Ki-Yeon Lee & Dong-Ju Chae & Sung-Hun Lim, 2022. "Design of Mid-Point Ground with Resistors and Capacitors in Mono-Polar LVDC System," Energies, MDPI, vol. 15(22), pages 1-20, November.

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