<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Voltage unbalance is common issue encountered in low voltage distribution networks, caused by uneven allocation of single-phase customers among phases. This paper analyses part of real low voltage distribution network in Bosnia and Herzegovina. The impact of single-phase customers and single-phase connected micro photovoltaic power plants (MPPP-s) were analysed. To reduce unbalance and improve voltage profiles, Phase Balance Optimization toolbox in DIgSILENT PowerFactory software was performed in six scenarios with different distribution of customers and different percentage of penetration of MPPS-s. The aim was to find method with least number of changes in customer and photovoltaic phase connection that fits within defined limits of voltage variations and voltage unbalance of European standard for power quality (EN 50160). Conclusion is that MPPP-s cause voltage increases in the network, as well as an increase in voltage unbalance, but these effects can be mitigated by proper distribution of customer loads and MPPS-s among phases.</p>
</abstract>

Voltage unbalance is common issue encountered in low voltage distribution networks, caused by uneven allocation of single-phase customers among phases. This paper analyses part of real low voltage distribution network in Bosnia and Herzegovina. The impact of single-phase customers and single-phase connected micro photovoltaic power plants (MPPP-s) were analysed. To reduce unbalance and improve voltage profiles, Phase Balance Optimization toolbox in DIgSILENT PowerFactory software was performed in six scenarios with different distribution of customers and different percentage of penetration of MPPS-s. The aim was to find method with least number of changes in customer and photovoltaic phase connection that fits within defined limits of voltage variations and voltage unbalance of European standard for power quality (EN 50160). Conclusion is that MPPP-s cause voltage increases in the network, as well as an increase in voltage unbalance, but these effects can be mitigated by proper distribution of customer loads and MPPS-s among phases.

Analysis of Voltage Profiles, Unbalance Voltages and Phase Balance Optimization of Single-Phase Customer and Photovoltaic Connection at Real Low Voltage Feeder

B&H Electrical Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

Voltage unbalance is common issue encountered in low voltage distribution networks, caused by uneven allocation of single-phase customers among phases. This...

Analysis of Voltage Profiles, Unbalance Voltages and Phase Balance Optimization of Single-Phase Customer and Photovoltaic Connection at Real Low Voltage Feeder

Published Online: Dec 15, 2023

Page range: 61 - 74

Received: Nov 23, 2023

Accepted: Nov 30, 2023

DOI: https://doi.org/10.2478/bhee-2023-0019

Keywords
low voltage network, micro photovoltaic power plant, Phase Balance Optimization, voltage variations, voltage unbalance, EN 50160 standard

© 2023 Mario Ostojić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Analysis of Voltage Profiles, Unbalance Voltages and Phase Balance Optimization of Single-Phase Customer and Photovoltaic Connection at Real Low Voltage Feeder

Published Online: Dec 15, 2023

Page range: 61 - 74

Received: Nov 23, 2023

Accepted: Nov 30, 2023

DOI: https://doi.org/10.2478/bhee-2023-0019

Keywordslow voltage network, micro photovoltaic power plant, Phase Balance Optimization, voltage variations, voltage unbalance, EN 50160 standard

© 2023 Mario Ostojić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
low voltage network, micro photovoltaic power plant, Phase Balance Optimization, voltage variations, voltage unbalance, EN 50160 standard