Oil Impregnated Pressboard Barrier Systems Based on Ester Fluids for an Application in HVDC Insulation Systems

Patrick Rumpelt and Frank Jenau
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Patrick Rumpelt: Institute of High Voltage Engineering, TU Dortmund University, 44227 Dortmund, Germany
Frank Jenau: Institute of High Voltage Engineering, TU Dortmund University, 44227 Dortmund, Germany

Energies, 2017, vol. 10, issue 12, 1-10

Abstract: Ester-based insulation fluids are being increasingly used in high-voltage insulation systems. The reasons are the advantages in the area of ecological compatibility and resource-saving provision. The intention to use ester-based insulation fluids in high voltage direct current (HVDC) equipment is new. The major challenge in designing the HVDC insulation system is, that the systems do not only experience an alternating voltage, but also a direct voltage Offset. This presents a challenge to predict the electric field distribution. For this purpose, basic investigations are carried out in the form of conductivity investigations for various insulation barrier systems. In addition, a mineral oil serves as a reference oil for estimating existing insights. The results show the influence of the ester-based insulating liquids on the direct current (DC) conductivity for basic arrangements, consisting of pressboard barriers and mixed insulations.

Keywords: transformer; alternative insulating oils; HVDC insulating system; DC conductivity; pressboard; Midel ® 7131; FR3 ® (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: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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