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Grid-forming inverters replacing Diesel generators in small-scale islanded power systems

Pedro P. Beires,C. Moreira,J. Lopes

Published 2019 in 2019 IEEE Milan PowerTech

ABSTRACT

This paper addresses the stability analysis of a real island power system following the transformation occurring in the generation portfolio: from a 100 % synchronous-generation-based system (associated to a fleet of diesel generators) to a hybrid power system dominated by power electronics converters. The integration of a battery-wind-photovoltaic power plant in the island creates the necessary conditions for operating the system without synchronous units-scenarios with a system dominated by power electronics - or, at least to minimize its use–scenarios with a reduced number of synchronous units in operation. The possibility of operating the system under these conditions is assured by grid-forming inverters connected to battery energy storage systems, that are responsible for performing frequency and voltage control tasks either in parallel with synchronous units or when synchronous units are disconnected. The resulting transient stability issues for the aforementioned operational scenarios are discussed and evaluated through dynamic simulations.

PUBLICATION RECORD

  • Publication year

    2019

  • Venue

    2019 IEEE Milan PowerTech

  • Publication date

    2019-06-01

  • Fields of study

    Computer Science, Engineering, Environmental Science

  • Identifiers
    DOI 10.1109/PTC.2019.8810848
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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