Use case-samling Use case knyttet til nettforvaltningsprosessen

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The benefit of batteries in a flexible distribution grid : results from the FlexNett project

This report is developed within the FlexNett project (2015-2018) and summaries the results from the demonstration sites focusing on batteries, located both at BKK Nett, NTE Nett and the municipality of Hvaler. The FlexNett project aimed to contribute to increased flexibility in the future smart distribution grid by demonstration and verification of technical and market based solutions for flexibility, on different grid levels and for different stakeholders. This report focuses on stationary batteries. A stationary storage is typically a lithium battery (Li-ion) and often consists of modules that can be assembled into larger units depending on the specification. A battery can be installed anywhere in the mains; at the customer (behind the meter), in a neighbourhood, in a network station / transformer station or at a production unit.The benefit of batteries in a flexible distribution grid : results from the FlexNett projectpublishedVersio

Health Index, Risk and Remaining Lifetime Estimation of Power Transformers

A new method for systematically estimating health index, probability of breakdown and remaining life for power transformers is presented. The method combines three basic models; a physical winding degradation model, a health index model based on condition monitoring data combined with expert judgement, and a statistics-based end-of-life model. The statistics-based model uses data from a database of scrapped transformers under development in Norway. Combining the first two models with the statistics-based model, an individual and condition-dependent probability of breakdown is obtained. From this, the expected remaining life is calculated. Finally, the stochasticity of the method is utilized for optimization of maintenance and replacement. The method hence provides key decision support for transformer managers, enabling them to identify transformers in poor condition, and to follow-up and prioritize transformers for maintenance and replacement. The proposed method has been implemented in a transformer asset management tool for Norwegian utilities. The usefulness of the method is illustrated by applying it to selected transformers from one of these utilities. Finally, important limitations, uncertainties and further improvements are discussed

Use case-samling Use case knyttet til nettforvaltningsprosessen

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Resultat fra use case-tester - Resultat og erfaringer fra use case-tester i DeVID-prosjektet

Denne rapporten avslutter arbeidet som er gjort i DeVID i WP2: Smartere Nettdrift, og WP3: Smartere Planlegging, vedlikehold og fornyelse. Rapporten går igjennom utførte tester av use casene i DeVID WP2 og WP3, og oppsummerer erfaringer, observerte muligheter og utfordringer, hvilke krav som er nødvendig for å kunne bruke use caset, og kostnytte betraktninger. Rapportens viktigste resultater og erfaringer er sammenfattet i kapittel 3 som omhandler oppsummeringer og anbefalinger fra DeVID prosjektet ved anskaffelse av AMS, nettstasjonsovervåkning, tilhørende systemer, og tilhørende programmer.publishedVersio

Fremtidens Avanserte Måle- og Styringssystem (AMS) : forventet utvikling 2-5 år frem i tid

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Fleksibel nettdrift : resultater fra piloter i FlexNett-prosjektet

Denne rapporten er et resultat fra Flex-Nett-prosjektet (2015-2018)og oppsummerer resultatene fra demoer hos BKK Nett knyttet til fleksibel nettdrift. Oppdragsgiver: FlexNett-prosjektetpublishedVersio

Omarbeiding av veileder til sikkerhet for "Avanserte måle- og styringssystemer" - AMS - i avregningsforskriften

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