Modelling and Control of DC Microgrids in Residential Buildings

Sergio Motta, Antti Alahäivälä, Poria Divshali, Riku Pasonen, Anna Kulmala, Kari Mäki, YoungPyo Cho, HongJoo Kim

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Microgrids are considered as one of the most promising directions for the future of power systems. A major point in the characterization of a Microgrid is its ability to operate isolated from the main grid (islanded mode). However, the management strategy to allow such operation still poses a significant challenge in the implementation of these systems. The focus of this work is the behaviour of the distribution grid of a large-scale residential building during grid-connected and islanded modes, especially in terms of the control strategy to maintain a stable and uninterrupted supply of electricity.We developed aplatform for simulating a DC Microgrid’s (DCMG) long-term operation using a PSCAD model. This model allows for the simulation of a residential DCMG, targeting its energy management to maintain power balance under various conditions, including during islanded operation. This work discusses the control strategy used to maintain the voltage level at the distribution bus within a 5% limit of it’s rated value. For a theoretical building, the model yielded 2 hours of unlimited supply, and extra 4 hours of critical-load only. The results indicates that the proposed control strategy allows for adequate independence and stable operation during loss of grid connection.
    Original languageEnglish
    Title of host publication25th International Conference on Electricity Distribution
    Subtitle of host publicationCIRED 2019
    PublisherAIM - Association des Ingénieurs de Montefiore
    Number of pages5
    ISBN (Electronic)978-2-9602415-0-1
    Publication statusPublished - Jun 2019
    MoE publication typeA4 Article in a conference publication
    Event25th International Conference on Electricity Distribution - Madrid, Spain
    Duration: 3 Jun 20196 Jun 2019
    http://www.cired2019.org/

    Conference

    Conference25th International Conference on Electricity Distribution
    Abbreviated titleCIRED 2019
    Country/TerritorySpain
    CityMadrid
    Period3/06/196/06/19
    Internet address

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