Methods and strategies for overvoltage prevention in low voltage distribution systems with PV
Open accessAbstract
The rapid development of photovoltaic (PV) systems in electrical grids brings new challenges in the control and operation of power systems. A considerable share of already installed PV units is small‐scale units, usually connected to low‐voltage (LV) distribution systems that were not designed to handle a high share of PV power. This study provides an in‐depth review of methods and strategies proposed to prevent overvoltage in LV grids with PV and discusses the effectiveness, advantages, and disadvantages of them in detail. On the basis of the mathematical framework presented in this study, the overvoltage caused by high PV penetration is described, solutions to facilitate higher PV penetration are classified, and their effectiveness, advantages, and disadvantages are illustrated. The investigated solutions include the grid reinforcement, electrical energy storage application, reactive power absorption by PV inverters, application of active medium‐voltage to LV transformers, active power curtailment, and demand response. Coordination between voltage control units by localised, distributed, and centralised voltage control methods is compared using the voltage sensitivity analysis. On the basis of the analysis, a combination of overvoltage prevention methods and coordination between voltage control units can provide an efficient solution to increase the PV hosting capacity of LV grids.
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A high share of PVs in the MV or LV network can cause voltages with magnitude higher than boundaries set by the grid code or standards.
“A high share of PVs in the MV or LV network can cause voltages with the magnitude that is higher than boundaries set by the grid code or the standards.”
From A Comprehensive Analysis of the Voltage Unbalance Factor in PV and EV Rich Non-Synthetic Low Voltage Distribution Networks (2020) · cites this paper as [7]
The indexed copy provides a title and bibliographic material (section “1 Finished,” no page), but no paper-body passage addressing the claim. Searches for high PV penetration, MV networks, and grid-code or standards-based voltage limits returned no eligible passage; the available abstract cannot be used as evidence under the stated rules. (LLM, conf=0.70)
Experimental — accuracy not yet measuredImprovement of the PVHC has a regional character and cannot be solved with a set of universal precautions; a detailed simulation should be carried out for each case.
“Improvement of the PHVC has always had a regional character and, therefore, cannot be solved with a set of universal precautions.Instead, a detailed simulation should be carried out for each case [50,51].”
From Stochastic Approach for Increasing the PV Hosting Capacity of a Low-Voltage Distribution Network (2022) · cites this paper as [50]
The indexed Abstract discusses methods for increasing PV hosting capacity, but does not say that improvements are region-specific, that universal precautions cannot work, or that each case requires detailed simulation. Searches for those terms and for case-specific network analysis found no passage addressing the claim. (LLM, conf=0.73)
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Cites
Electric vehicle charging in an office building microgrid with distributed energy resources
Van Roy, J., Leemput, N., Geth, F., Buscher, J., Salenbien, R., & Driesen, J. (2014) · IEEE Transactions on Sustainable Energy · doi:10.1109/tste.2014.2314754 · Cited by 180 · see citing works
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Antić, T., Capuder, T., & Bolfek, M. (2020) · Energies · doi:10.3390/en14010117 · Cited by 51 · see citing works
“Authors in [7] propose different techniques for an overvoltage prevention in LV networks: grid reinforcement, the application of active transformers, active power curtailment, reactive power management by PV inverters, demand respond and application of electrical energy storage systems (EESSs).”
MethodStochastic Approach for Increasing the PV Hosting Capacity of a Low-Voltage Distribution Network
Bendík, J., Cenký, M., Cintula, B., Beláń, A., Eleschová, Ž., & Janiga, P. (2022) · Processes · doi:10.3390/pr11010009 · Cited by 26 · see citing works
- Authors
- Hashemi, S., & Østergaard, J.
- Affiliations
- Technical University of Denmark (DK)
- Corresponding author
- Hashemi, Seyedmostafa
- Venue
- IET Renewable Power Generation
- Published
- 2017-01-17
- Volume
- 11
- Issue
- 2
- Pages
- 205-214
- ISSN
- 1752-1416 (ISSN-L)
- 1752-1424
- OpenAlex
- W2549148602
- Cited by
- 212
- References
- 1
- Citations by year
- 2026: 8 · 2025: 17 · 2024: 15 · 2023: 25 · 2022: 27 · 2021: 35 · 2020: 36 · 2019: 24 · 2018: 20 · 2017: 5
- FWCI
- 7.53
- Type
- journal article
- Language
- en
- Open access
- green
- orbit.dtu.dk
- Licence
- Locations
- IET Renewable Power Generation (publishedVersion)
- Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion, other-oa)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Optimal Power Flow Distribution
- Physical Sciences › Engineering › Control and Systems Engineering › Microgrid Control and Optimization
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Power Quality and Harmonics
- Keywords
- overvoltage prevention, low-voltage distribution networks, photovoltaic penetration, photovoltaic hosting capacity, voltage regulation, reactive power absorption, photovoltaic inverter, energy storage, active power curtailment, demand response, grid reinforcement, voltage sensitivity analysis, distributed voltage control
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