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COMSOL Conference Milan 2012

Ampacity simulation of high voltage cables
Eva Pelster 10.10.2012

Excerpt from the Proceedings of the 2012 COMSOL Conference in Milan

Content
(1) Introduction(2) Comparison of IEC standard calculation method with COMSOL Mutliphysics (3) Evaluation of a three-conductor high voltage cable configuration (4) Conclusion

Ampacity simulaion of high voltagecables

10.10.2012

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(1) Introduction
• • • • Cable ampacity typically depends largely on the cross-section of ist conductor Due to cost reduction it is of interest to keep the conductorcrosssection low Usually semi-empirical methods, including larger safety margins, are used to determine ampacity Here COMSOL Multiphysics is used to determine the temperature distribution

Ampacitysimulaion of high voltage cables

10.10.2012

3

Content
(1) Introduction (2) Comparison of IEC standard calculation method with COMSOL Mutliphysics (3) Evaluation of a three-conductor high voltagecable configuration (4) Conclusion

Ampacity simulaion of high voltage cables

10.10.2012

4

(2) Comparison of IEC standard calculation method with COMSOL Mutliphysics
• Comparison ofIEC-standard ampacity calculation with COMSOL Multiphysics simulation for: – single-conductor cable – three bundled single-conductor cable

Ampacity simulaion of high voltage cables

10.10.2012

5(2) Comparison of IEC standard calculation method with COMSOL Mutliphysics
• A single-conductor cable is implemented to evaluate the maximum allowable current, while keeping the conductortemperature at a defined maximum temperature The cable consists of a conductor material as well as different isolating layers and armour

•

Ampacity simulaion of high voltage cables

10.10.2012

6(2) Comparison of IEC standard calculation method with COMSOL Mutliphysics
• IEC standard ampacity calculation: – Simple calculation of radial heat conduction – Aim is to limit the conductor...