1 pacini it 5.1.2 16 barcelona 12-15 may 2003 improvement in the distribution assets management by...

1Pacini IT 5.1.2 16

Barcelona 12-15 May 2003

Improvement in the Distribution AssetsImprovement in the Distribution AssetsManagement by the Exploitation of theManagement by the Exploitation of theInnovative Component Technology andInnovative Component Technology and

Network Developing ModelNetwork Developing Model

M. Mazzoni, G. Pacini, P. PernaENEL Distribuzione

E. Colombo- CESI

2Pacini IT 5.1.2 16


New Terms of Reference forDistribution Network Planning

–load growth generally reducing–new needs for load location–reduced capital recovery time–power quality tailored on customer

requirements and business objectives

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New Reliability Criteria

assessment of networkconfiguration based on “n-1” criterium

approaches based onprobabilistic methods aimed at quantifying

the costs of the reliability providedPacini IT 5.1.2 16

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The probabilistic approaches consider the failure behaviour of network components and analyse the different possible network scenarios. The aim is to meet with the quality level imposed by the Regulators, whilst optimizing the investment levels.

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In practice the objective is to fully exploit the capacity of network components on account of the employment of new technologies (particularly remote control, improved reliability of components, etc.) allowing to reduce the amount of non delivered energy in case of failure.

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Constraints & Opportunities of the IncomingScenario

•development of the net has to cope with the new national requirements (environmental aspects)

•technical solutions for connection have to comply with the new rules in terms of flexibility and reliability

•new schemes taking advantage of the innovative technology available on the market (prefabricated & compact solutions)

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Constraints & Opportunities of the IncomingScenario

•evolution of the TLC allows to reduce the network redundancy

•new strategies in the development of the net (net reserve vs local reserve)

•new opportunities offered by the increasing diffusion of dispersed generation even if it means to solve new operating problems (voltage regulation, fault location, etc.)

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Traditional: SS Local Back-upTraditional: SS Local Back-up

Ongoing: Network Back-upOngoing: Network Back-up

Models of Distribution Network Development

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Net reserve vs local reserve

Models of Distribution Network Development

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Means to Improve the New Distribution Network Model

Telecontrol

for a prompt exploitation of the

network reserve

Simplified and Satellite Substations

to strenghten the network and optimise length and losses of

MV linesPacini IT 5.1.2 16

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Expected Benefits of new network strategies

• greater loading factor of transformers• reduced length of MV lines• reduced power losses• reduced ground-fault current• higher power quality• a larger number of simplified HV/MV substation and some MV/MV satellite

substation increasing the power injection points

• additional investment in the HV network lower then the savings achieved in the MV networkPacini IT 5.1.2 16

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Innovative Component Technology HV Highly Integrated Switchgear (HIS)

• Very compact design• SF6 insulation• Fast and reliable installation at site• Reduced ground area and need for civil work• Factory assembled and tested• Life Cycle Cost Convenience

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TWO CB “Y2” TYPE ELECTRICAL DIAGRAM (red line)

Innovative Component Technology

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« Y2 » SIMPLIFIED SCHEME CONNECTIONPacini IT 5.1.2 16

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Innovative Component Technology MV Compact Design Switchgear in Container

• Air insulated• Fast and reliable installation at site• 68% volume reduction vs. traditional• Factory assembled• Reduced need for civil work• Life cycle cost Convenience

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MV COMPACT DESIGN 24kV SWITCHGEAR IN CONTAINER


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• HV EQUIPMENT•SINGLE BAY MODULE (LINE OR CABLE CONNECTION)• NEW “Y2” AND SINGLE BAY MODULE VERSIONS FOR INDOOR INSTALLATIONS

• MV EQUIPMENT • MV COMPACT SIX LINE SWITCHGEAR IN CONTAINER• MV SATELLITE SWITCHGEAR IN CONTAINER• COMPACT DESIGN SWITCHGEAR UPRATE ( busbar rated current 1600A, short circuit current 16kA)

Innovative Component TechnologyNew Developments

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New Developments

SINGLE BAY MODULE (LINE OR CABLE CONNECTION)FOR A THIRD LINE BAY OR REMOTE TRANSFORMER

CABLE SEALING ENDAIR BUSHING

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USE OF HV «Y2 » MODULE FOR “H” SCHEME FOR INDOOR SUBSTATION (CABLE CONNECTION)

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SATELLITE SUBSTATION ELECTRIC DIAGRAM Pacini IT 5.1.2 16

IN FEED n°1

IN FEED n°2

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1 pacini it 5.1.2 16 barcelona 12-15 may 2003 improvement in the distribution assets management by...

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