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Effective Volt/var Control for Low Voltage Grids with Bulk Loads

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  • Daniel-Leon Schultis

    (Institute of Energy Systems and Electrical Drives, TU Wien, 1040 Vienna, Austria)

Abstract

This paper investigates the voltage and reactive power control problem in low voltage grids with connected prosumers and bulk loads. The X ( U ) local control, which maintains the voltage at the feeders’ ends within a predefined band, and its combination with Q -Autarkic customer plants are the most effective and reliable strategies in grids with high prosumer share. However, these strategies may need adaptations to guarantee voltage limit compliance when bulk loads, such as electric vehicle parking garages and community-owned photovoltaic systems, are connected to the low voltage feeders. This paper extends the X ( U ) local control concept to involve bulk loads in Volt/var control and investigates the resulting load flows in different real low voltage grids. The results show that the extended control arrangement reliably removes all voltage limit violations by deteriorating the effectiveness of the original X ( U ) local control arrangement: reactive power flows and equipment loading within the low voltage grids are increased.

Suggested Citation

  • Daniel-Leon Schultis, 2022. "Effective Volt/var Control for Low Voltage Grids with Bulk Loads," Energies, MDPI, vol. 15(5), pages 1-30, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1950-:d:766058
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    References listed on IDEAS

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    1. Manditereza, Patrick Tendayi & Bansal, Ramesh, 2016. "Renewable distributed generation: The hidden challenges – A review from the protection perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1457-1465.
    2. Sarimuthu, Charles R. & Ramachandaramurthy, Vigna K. & Agileswari, K.R. & Mokhlis, Hazlie, 2016. "A review on voltage control methods using on-load tap changer transformers for networks with renewable energy sources," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 1154-1161.
    3. Daniel-Leon Schultis & Albana Ilo, 2021. "Effect of Individual Volt/var Control Strategies in LINK -Based Smart Grids with a High Photovoltaic Share," Energies, MDPI, vol. 14(18), pages 1-31, September.
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    Cited by:

    1. M. Ryyan Khan & Intekhab Alam & M. Rezwan Khan, 2023. "Inverter-Less Integration of Roof-Top Solar PV with Grid Connected Industrial Drives," Energies, MDPI, vol. 16(4), pages 1-14, February.

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