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Overvoltage due to single-phase and three-phase connected PV
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-3449-1579
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0003-4074-9529
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. Vattenfall AB.ORCID iD: 0000-0003-0749-7366
2019 (English)In: 25th International Conference on Electricity Distribution, Madrid, 3-6 June 2019., CIRED - Congrès International des Réseaux Electriques de Distribution, 2019, p. 1-5, article id No 370Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents the overvoltage caused by single and three-phase connected PV to a low-voltage distribution grid. Statistics are obtained based on source-impedance data for 40 000 customers. A stochastic approach is applied to a 28-customer low-voltage network and the probability of overvoltage is assessed. It is shown that the voltage rise due to single-phase connected PV is six times the rise for three-phase connected PV.To mitigate the overvoltage, grid-reinforcement, reactive power compensation, curtailment and coordinated connection of PV can be used. It is shown that reactive compensation is not effective in LV grids due to high R/X ratio. Coordinated connection helps in reducing the overvoltages caused by single-phase PV.Policy suggestions towards three-phase PV installations and coordinated single-phase PV connections are included in the paper.

Place, publisher, year, edition, pages
CIRED - Congrès International des Réseaux Electriques de Distribution, 2019. p. 1-5, article id No 370
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electric Power Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-74484OAI: oai:DiVA.org:ltu-74484DiVA, id: diva2:1324231
Conference
25th International Conference on Electricity Distribution, Madrid, 3-6 June 2019.
Projects
Hosting Capacity for Solar Power in Northern SwedenAvailable from: 2019-06-13 Created: 2019-06-13 Last updated: 2019-06-13

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Mulenga, EnockBollen, MathEtherden, Nicholas

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CiteExportLink to record
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Citation style
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