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Reliability assessment of island multi-energy microgrids

Lookup NU author(s): Dr Marcos Santos, Da HuoORCiD, Dr Neal WadeORCiD, Dr David Greenwood, Dr Ilias Sarantakos



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Multi-energy microgrids promise to bring more flexibility and increase reliability by interconnecting networks. Electricity and gas networks have very different dynamic behaviour in response to a fault or failure. Gas networks also have built-in energy storage which can continue to provide a reliable supply if the gas inputs to the system are unavailable. This paper presents a novel reliability assessment method applied to multi-energy microgrids, which combines an elegant incidence matrix analysis to identify connectivity between sources and load points, with a sequential Monte-Carlo simulation and generation adequacy evaluation. The case study involves an electricity-gas microgrid. The electricity network is a multi-sourced grid, while the gas network is supplied by a biogas plant. The linepack (gas stored along the pipelines) is modelled to account for the slower gas dynamics. The proposed method is demonstrated on a real-world electricity distribution network in Austria. Results illustrate the reliability benefits of forming a multi-energy microgrid.

Publication metadata

Author(s): Santos MV, Huo D, Wade NS, Greenwood DM, Sarantakos I

Publication type: Article

Publication status: Published

Journal: Energy Conversion and Economics

Year: 2021

Volume: 2

Issue: 3

Pages: 169-182

Print publication date: 24/09/2021

Online publication date: 01/09/2021

Acceptance date: 30/06/2021

Date deposited: 16/07/2021

ISSN (electronic): 2634-1581

Publisher: John Wiley & Sons Ltd.


DOI: 10.1049/enc2.12040


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Funder referenceFunder name
824386European Commission