Back-to-Back Energization of a 60kV Cable Network - Inrush Currents Phenomenon

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Abstract

On November 2008 the Danish government decided that all Danish transmission lines with a rated voltage equal to and below 150kV must be put underground, in order to reduce the visual pollution caused by Overhead Lines.
This decision will lead to a massive use of underground cables in the Danish Network, and force a change in the approach used until now when planning, analyzing and operating electrical power systems.
One problem that might arise is the energization of cables in parallel, as this operation may originate high inrush currents, which represent a risk to the circuit breakers connected to the cables.
The Danish utility ENV plans to install a new cable on its 60kV network, which will be installed in parallel with other cables already installed in the network.
This paper summarizes the study made to calculate the inrush currents during the cable's energization, and its importance to the purchase of a new circuit breaker for the cable. A theoretical background of this phenomenon is also presented.
Original languageEnglish
Title of host publicationProceedings of the Power and Energy Society General Meeting 2010
Number of pages6
PublisherIEEE Press
Publication dateJul 2010
Pages1-6
ISBN (Print)978-1-4244-6549-1
ISBN (Electronic)978-1-4244-8357-0
DOIs
Publication statusPublished - Jul 2010
EventIEEE Power and Energy Society General Meeting, 2010 - Minneapolis, United States
Duration: 25 Jul 201029 Jul 2010

Conference

ConferenceIEEE Power and Energy Society General Meeting, 2010
CountryUnited States
CityMinneapolis
Period25/07/201029/07/2010

Bibliographical note

INSPEC Accession Number: 11570959

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