Protection analysis tool for distribution networks with a high embedded generation penetration

Article

Kennedy, Joel, Ciufo, Phil and Agalgaonkar, Ashish. 2018. "Protection analysis tool for distribution networks with a high embedded generation penetration." International Journal of Electrical Power and Energy Systems. 107, pp. 605-614. https://doi.org/10.1016/j.ijepes.2018.12.001
Article Title

Protection analysis tool for distribution networks with a high embedded generation penetration

ERA Journal ID4478
Article CategoryArticle
AuthorsKennedy, Joel (Author), Ciufo, Phil (Author) and Agalgaonkar, Ashish (Author)
Journal TitleInternational Journal of Electrical Power and Energy Systems
Journal Citation107, pp. 605-614
Number of Pages10
Year2018
Place of PublicationUnited Kingdom
ISSN0142-0615
1879-3517
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ijepes.2018.12.001
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0142061518321604
Abstract

The protection design philosophy of distribution networks is predicated on the inherent radiality that exists in such networks. However, the increased presence of inverter-interfaced embedded generation is compromising the radial nature of distribution networks. Hence, the increasing importance of accurately modelling the fault response of inverter-interfaced embedded generation is becoming apparent. Presently, the impacts of large penetrations of inverter-interfaced embedded generators on protection adequacy are determined through time-domain modelling. This paper proposes a tool for determining a snapshot of the expected protection response of distribution networks with inverter-interfaced embedded generation. The tool automatically simulates all fault types at the extremities of each protection zone and compiles the data to generate a report that showcases important information from a protection adequacy perspective. The tool can simulate fault responses in orders of magnitude faster than time-domain analysis using a load-flow like algorithm. This algorithm is designed to have a high convergence in fault scenarios and also approximate the fault behaviour of inverter-interfaced embedded generators. Finally, the tool investigates whether a new embedded generator installation may require an upgrade of network infrastructure or an amendment of protection settings. The tool is implemented using MATLAB and compared with time-domain simulations for verification purposes.

KeywordsEmbedded generation; Inverter-interfaced; Protection; Simulation
ANZSRC Field of Research 2020400805. Electrical energy transmission, networks and systems
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Byline AffiliationsUniversity of Wollongong
Institution of OriginUniversity of Southern Queensland
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