Tunnel Cable Project (TUNCAB) swegrids-logo

SweGRIDS research area CIPOWER Controllable Power Components
SweGRIDS project code CP14
Project type PhD
Status running
Researcher Patrick Janus   (webpage)
University KTH (EME)
Project period 2014-06-01 to 2022+    (project running at reduced speed)
Project supervisor Hans Edin   (webpage)
Industrial sponsors Ellevio, Svenska kraftnät, ABB

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Project abstract

The research project deals with a new diagnostic method for high-voltage tunnel-laid AC cables with the aim of achieving sensitive detection and characterization of degradation of polymeric systems used for cable insulation, based on gas emissions from the insulating materials.

Summary of work

2015. One test setup has been completed and tests have been conducted on basic test-setups with promising results that can be treated as a proof-of-concept. A second test setup is under construction to test basic material parameters. An extensive literature study is half-finished on both material properties of cable insulation as well as on recent sensor developments. The sensor part of this study has been completed. Further investigations in different types of gas sensors have been undertaken after the initial tests with a canonical corona test-setup.

2016. A second prototype has been finalized and is currently being used for determination of the working properties of different gas sensors which are intended to be used in the final application in order to quantify their suitability to detect the fault gases from cable faults. The second prototype will also be used to evaluate the fault gases which can be expected from the degradation of XLPE due to high electrical stresses and how permeable an XLPE barrier is to these gases. [in later years the project has been at reduced rate due to other work duties besides PhD studies]

Event log


Project reference-group

Carl-Olof Olsson,  ABB
Elisabeth Lindell,  ABB
Olle Hansson,  Ellevio
Claes Forssman,  Ellevio
Valentinas Dubickas,  Svenska kraftnät
Gunnar Gehlin,  Svenska kraftnät

Publications by this researcher

See alternatively the researcher's full DiVA list of publications, with options for sorting.
Publications in journals and conferences usually will not show until a while after they are published.

An experimental assessment of the intermittent heating and cooling operation effect on power transformer insulation
Daniil Danylov,   Yanick Patrick Frei,   Leonardo Colombo,   Raimundo Montalba Mesa,   Zhanzhan Liu,   Patrick Janus,   Kateryna Morozovska.

Partial Discharges in a Cavity Embedded in Oil-Impregnated Paper : Effect of Electrical and Thermal Aging
Mohamad Ghaffarian Niasar,   Nathaniel Taylor,   Patrick Janus,   Xiaolei Wang,   Hans Edin,   Respicius Clemence Kiiza.
2015,   IEEE transactions on dielectrics and electrical insulation, vol. 22(2)

Publication list last updated from DiVA on 2024-01-10 15:20.

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Last generated: 2024-01-10