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Impact of Household PV Generation on the Voltage Quality in 0.4 kV Electric Grid—Case Study

Author

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  • Peteris Apse-Apsitis

    (Institute of Industrial Electronics and Electrical Engineering, Riga Technical University, LV-1048 Riga, Latvia)

  • Oskars Krievs

    (Institute of Industrial Electronics and Electrical Engineering, Riga Technical University, LV-1048 Riga, Latvia)

  • Ansis Avotins

    (Institute of Industrial Electronics and Electrical Engineering, Riga Technical University, LV-1048 Riga, Latvia)

Abstract

This article (case study) discusses the influence of household photovoltaic generation on the voltage quality in a three-phase 0.4 kV grid. The research analyzes remotely acquired data from two specially designed three-phase Y-connected power meters to understand the PV system’s influence on the grid. The values of the voltages, currents, THD, individual harmonics, power factor, and K-factor are obtained every 200 ms over several months, creating more than 20 GB of data. The loads are typical household electrical appliances and EV portable chargers. The main conclusion after analyzing the measurements is that three-phase PV generation in the presence of household loads can create or increase grid unbalance; important current values into the neutral wire and THD and K-factor increase in some cases. The results also uncovered that without current sensing at the household connection point to the three-phase grid to control the PV inverter, the balanced phase output power of the grid-tied inverter is harmful to the 0.4 kV grid balance.

Suggested Citation

  • Peteris Apse-Apsitis & Oskars Krievs & Ansis Avotins, 2023. "Impact of Household PV Generation on the Voltage Quality in 0.4 kV Electric Grid—Case Study," Energies, MDPI, vol. 16(6), pages 1-11, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2554-:d:1091271
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    References listed on IDEAS

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    1. Md. Shouquat Hossain & Naseer Abboodi Madlool & Ali Wadi Al-Fatlawi & Mamdouh El Haj Assad, 2023. "High Penetration of Solar Photovoltaic Structure on the Grid System Disruption: An Overview of Technology Advancement," Sustainability, MDPI, vol. 15(2), pages 1-25, January.
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    Cited by:

    1. Giovanni Artale & Nicola Panzavecchia & Valentina Cosentino & Antonio Cataliotti & Manel Ben-Romdhane & Amel Benazza-Ben Yahia & Valeria Boscaino & Noureddine Ben Othman & Vito Ditta & Michele Fiorino, 2023. "CZT-Based Harmonic Analysis in Smart Grid Using Low-Cost Electronic Measurement Boards," Energies, MDPI, vol. 16(10), pages 1-25, May.

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