Abstract
Ensuring resilient operation and control of smart grids is fundamental for empowering their deployment, but challenging at the same time. Accordingly, this study proposes a novel methodology for evaluating resilience of Information and Communication Technology (ICT) systems for smart distribution grids. Analysing how the system behaves under changing operating conditions a power system perspective allows to understand how resilient the smart distribution grid is, but the resilience of the ICT system in charge of its operation affects the overall performance of the system and does, therefore, condition its resilience. With the aim of systematising the evaluation of ICT systems’ resilience, this study proposes to combine a standardized modelling of Smart Grids, the Smart Grid Architecture Model (SGAM), with a data structured diagram, the Entity Relationship Model (ERM). The architecture of smart distribution grids is analysed through SGAM. Then, their technical characteristics and functionalities are defined and represented in a ERM diagram. Finally, the attributes or properties of the system components are used to formulate resilience indicators against different types of disturbances. This methodology is then applied to analyse the resilience of a ICT platform being developed in EMPOWER H2020 project.
Highlights
The performance of traditional power transmission systems has usually been assessed by its ability to resist disturbances and to recover efficiently in case of failure
This study has proposed a methodology to evaluate resilience of Information and Communication Technology (ICT) platforms in Smart distribution grids
The combination of a standardized modelling of Smart Grids (SGAM) with the Entity Relationship Model has been proposed to determine the criticality of functions -and elements involved- essential in the operation of these systems
Summary
The performance of traditional power transmission systems has usually been assessed by its ability to resist disturbances and to recover efficiently in case of failure. The specificities of the control and communication architecture of smart distribution grids, which imply different actors, roles, elements and functions compared to other systems, justify dedicated studies of resilience of ICT for their operation. Grid Architecture Model (SGAM) and the other one is an extended method for structuring data diagrams: the Entity Relationship Model (ERM) These are well-developed tools, their use to assess resiliency as proposed in this methodology is not being addressed in smart grids context. The novel methodology developed allows to determine the criticality of functions and elements involved in ICT systems for operating smart distribution grids in a systematic way. A methodology to assess resilience of ICT systems for smart distribution grids is developed, based on the Entity-Relationship model.
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