Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources

This paper presents an integrated approach for assessing the impact that distributed energy resources (DERs), including intermittent photovoltaic (PV) generation, might have on the reliability performance of power networks. A test distribution system, based on a typical urban MV and LV networks in t...

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Main Authors: Mike Brian Ndawula, Sasa Z. Djokic, Ignacio Hernando-Gil
Format: Article
Language:English
Published: MDPI AG 2019-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/3/531
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author Mike Brian Ndawula
Sasa Z. Djokic
Ignacio Hernando-Gil
author_facet Mike Brian Ndawula
Sasa Z. Djokic
Ignacio Hernando-Gil
author_sort Mike Brian Ndawula
collection DOAJ
description This paper presents an integrated approach for assessing the impact that distributed energy resources (DERs), including intermittent photovoltaic (PV) generation, might have on the reliability performance of power networks. A test distribution system, based on a typical urban MV and LV networks in the UK, is modelled and used to investigate potential benefits of the local renewable generation, demand-manageable loads and coordinated energy storage. The conventional Monte Carlo method is modified to include time-variation of electricity demand profiles and failure rates of network components. Additionally, a theoretical interruption model is employed to assess more accurately the moment in time when interruptions to electricity customers are likely to occur. Accordingly, the impact of the spatio-temporal variation of DERs on reliability performance is quantified in terms of the effect of network outages. The potential benefits from smart grid functionalities are assessed through both system- and customer-oriented reliability indices, with special attention to energy not supplied to customers, as well as frequency and duration of supply interruptions. The paper also discusses deployment of an intelligent energy management system to control local energy generation-storage-demand resources that can resolve uncertainties in renewable-based generation and ensure highly reliable and continuous supply to all connected customers.
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spelling doaj.art-02b2e969a933400d8010beaa117bb4962022-12-22T03:58:38ZengMDPI AGEnergies1996-10732019-02-0112353110.3390/en12030531en12030531Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy ResourcesMike Brian Ndawula0Sasa Z. Djokic1Ignacio Hernando-Gil2Centre for Sustainable Power Distribution, Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UKInstitute for Energy Systems, University of Edinburgh, King’s Buildings, Mayfield Road, Edinburgh EH9 3JL, UKCentre for Sustainable Power Distribution, Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UKThis paper presents an integrated approach for assessing the impact that distributed energy resources (DERs), including intermittent photovoltaic (PV) generation, might have on the reliability performance of power networks. A test distribution system, based on a typical urban MV and LV networks in the UK, is modelled and used to investigate potential benefits of the local renewable generation, demand-manageable loads and coordinated energy storage. The conventional Monte Carlo method is modified to include time-variation of electricity demand profiles and failure rates of network components. Additionally, a theoretical interruption model is employed to assess more accurately the moment in time when interruptions to electricity customers are likely to occur. Accordingly, the impact of the spatio-temporal variation of DERs on reliability performance is quantified in terms of the effect of network outages. The potential benefits from smart grid functionalities are assessed through both system- and customer-oriented reliability indices, with special attention to energy not supplied to customers, as well as frequency and duration of supply interruptions. The paper also discusses deployment of an intelligent energy management system to control local energy generation-storage-demand resources that can resolve uncertainties in renewable-based generation and ensure highly reliable and continuous supply to all connected customers.https://www.mdpi.com/1996-1073/12/3/531demand profilesdemand responsedistributed (PV) generationenergy storagefailure rateMonte Carlo simulationnetwork reliabilityrenewable resources
spellingShingle Mike Brian Ndawula
Sasa Z. Djokic
Ignacio Hernando-Gil
Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
Energies
demand profiles
demand response
distributed (PV) generation
energy storage
failure rate
Monte Carlo simulation
network reliability
renewable resources
title Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
title_full Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
title_fullStr Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
title_full_unstemmed Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
title_short Reliability Enhancement in Power Networks under Uncertainty from Distributed Energy Resources
title_sort reliability enhancement in power networks under uncertainty from distributed energy resources
topic demand profiles
demand response
distributed (PV) generation
energy storage
failure rate
Monte Carlo simulation
network reliability
renewable resources
url https://www.mdpi.com/1996-1073/12/3/531
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AT sasazdjokic reliabilityenhancementinpowernetworksunderuncertaintyfromdistributedenergyresources
AT ignaciohernandogil reliabilityenhancementinpowernetworksunderuncertaintyfromdistributedenergyresources