Towards Electrothermal Optimization of a HVDC Cable Joint Based on Field Simulation

Yvonne Späck-Leigsnering, Greta Ruppert, Erion Gjonaj, Herbert De Gersem and Myriam Koch
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Yvonne Späck-Leigsnering: Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, Schloßgartenstr. 8, 64289 Darmstadt, Germany
Greta Ruppert: Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, Schloßgartenstr. 8, 64289 Darmstadt, Germany
Erion Gjonaj: Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, Schloßgartenstr. 8, 64289 Darmstadt, Germany
Herbert De Gersem: Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, Schloßgartenstr. 8, 64289 Darmstadt, Germany
Myriam Koch: Professur für Hochspannungs- und Anlagentechnik, Technische Universität München, Arcisstr. 21, 80333 München, Germany

Energies, 2021, vol. 14, issue 10, 1-13

Abstract: Extruded high-voltage direct current cable systems transmit electric power over long distances. Numerical field simulation can provide access to the internal electrothermal behavior of cable joints, which interconnect cable sections. However, coupled nonlinear electrothermal field simulations are still a challenge. In this work, a robust numerical solution approach is implemented and validated. This approach allows for efficient parameter studies of resistively graded high-voltage direct current cable joint designs. It is assessed how the dielectric stress distribution between the conductor connection and the grounded cable sheath is influenced by nonlinear field and temperature dependent electric conductivity of the field grading material. Optimal field grading material parameters, which fulfill the field grading and power loss requirements, are suggested based on the simulation studies.

Keywords: HVDC; power cables; joints; field grading; nonlinear electrothermal coupling; multiphysics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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