Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability

Microgrids can be used for securing the supply of power during network outages. Underground cabling of distribution networks is another effective but conventional and expensive alternative to enhance the reliability of the power supply. This paper first presents an analysis method for the determinat...

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Main Authors: Sanna Uski, Erkka Rinne, Janne Sarsama
Format: Article
Language:English
Published: MDPI AG 2018-07-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/11/8/1978
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author Sanna Uski
Erkka Rinne
Janne Sarsama
author_facet Sanna Uski
Erkka Rinne
Janne Sarsama
author_sort Sanna Uski
collection DOAJ
description Microgrids can be used for securing the supply of power during network outages. Underground cabling of distribution networks is another effective but conventional and expensive alternative to enhance the reliability of the power supply. This paper first presents an analysis method for the determination of microgrid power supply adequacy during islanded operation and, second, presents a comparison method for the overall cost calculation of microgrids versus underground cabling. The microgrid power adequacy during a rather long network outage is required in order to indicate high level of reliability of the supply. The overall cost calculation considers the economic benefits and costs incurred, combined for both the distribution network company and the consumer. Whereas the microgrid setup determines the islanded-operation power adequacy and thus the reliability of the supply, the economic feasibility results from the normal operations and services. The methods are illustrated by two typical, and even critical, case studies in rural distribution networks: an electric-heated detached house and a dairy farm. These case studies show that even in the case of a single consumer, a microgrid option could be more economical than network renovation by underground cabling of a branch in order to increase the reliability.
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spelling doaj.art-66a19bfb0dee4fad830d8b8be8e4c19b2022-12-22T03:45:27ZengMDPI AGEnergies1996-10732018-07-01118197810.3390/en11081978en11081978Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate ReliabilitySanna Uski0Erkka Rinne1Janne Sarsama2VTT Technical Research Centre of Finland Ltd., 02044 Espoo, FinlandVTT Technical Research Centre of Finland Ltd., 02044 Espoo, FinlandVTT Technical Research Centre of Finland Ltd., 02044 Espoo, FinlandMicrogrids can be used for securing the supply of power during network outages. Underground cabling of distribution networks is another effective but conventional and expensive alternative to enhance the reliability of the power supply. This paper first presents an analysis method for the determination of microgrid power supply adequacy during islanded operation and, second, presents a comparison method for the overall cost calculation of microgrids versus underground cabling. The microgrid power adequacy during a rather long network outage is required in order to indicate high level of reliability of the supply. The overall cost calculation considers the economic benefits and costs incurred, combined for both the distribution network company and the consumer. Whereas the microgrid setup determines the islanded-operation power adequacy and thus the reliability of the supply, the economic feasibility results from the normal operations and services. The methods are illustrated by two typical, and even critical, case studies in rural distribution networks: an electric-heated detached house and a dairy farm. These case studies show that even in the case of a single consumer, a microgrid option could be more economical than network renovation by underground cabling of a branch in order to increase the reliability.http://www.mdpi.com/1996-1073/11/8/1978battery energy storage system (BESS)distribution networkislanded operationmicro combined heat and power (micro-CHP)microgridnetwork outagephotovoltaics (PV)reliabilityunderground cable
spellingShingle Sanna Uski
Erkka Rinne
Janne Sarsama
Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
Energies
battery energy storage system (BESS)
distribution network
islanded operation
micro combined heat and power (micro-CHP)
microgrid
network outage
photovoltaics (PV)
reliability
underground cable
title Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
title_full Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
title_fullStr Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
title_full_unstemmed Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
title_short Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability
title_sort microgrid as a cost effective alternative to rural network underground cabling for adequate reliability
topic battery energy storage system (BESS)
distribution network
islanded operation
micro combined heat and power (micro-CHP)
microgrid
network outage
photovoltaics (PV)
reliability
underground cable
url http://www.mdpi.com/1996-1073/11/8/1978
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