Impact of Semi-Conductive Layers on the DC Conductivity of XLPE MVAC Cables

Patrik Ratheiser; Uwe Schichler

doi:10.1109/ICD59037.2024.10613146

Impact of Semi-Conductive Layers on the DC Conductivity of XLPE MVAC Cables

Patrik Ratheiser^*, Uwe Schichler

^*Corresponding author for this work

Institute of High Voltage Engineering and System Performance (4330)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

The increasing demand for electrical energy poses new challenges on the existing transmission and distribution grid. To overcome these challenges, the DC transmission in the MV grid will play an important role in future. To achieve a cost-effective solution, research is focusing on the use of MVAC cable systems for MVDC. MVDC cables with extruded insulation exhibit phenomena such as the accumulation of space charges in the insulation bulk. Furthermore, space charges accumulate at interfaces. Since the semi-conductive layers in cables represent such interfaces and the interaction with the insulation could be crucial for reliable operation, leakage current measurements are carried out on XLPE plate samples with and without an extruded semi-conductive layer. The material was taken from an MVAC cable. The apparent DC conductivity is measured in a temperature range of 25°C-90°C and for an electric stress up to 20 kV/mm.

Original language	English
Title of host publication	2024 IEEE 5th International Conference on Dielectrics (ICD)
Publisher	IEEE
Number of pages	4
ISBN (Electronic)	9798350308976
DOIs	https://doi.org/10.1109/ICD59037.2024.10613146
Publication status	Published - 12 Aug 2024
Event	5th IEEE International Conference on Dielectrics: ICD 2024 - Toulouse, France Duration: 30 Jun 2024 → 4 Jul 2024

Conference

Conference	5th IEEE International Conference on Dielectrics
Country/Territory	France
City	Toulouse
Period	30/06/24 → 4/07/24

Keywords

DC conductivity
MVDC
MVDC cable insulation
semi-conductive layer
space charge accumulation
XLPE

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films

Access to Document

10.1109/ICD59037.2024.10613146Licence: Unspecified

Cite this

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title = "Impact of Semi-Conductive Layers on the DC Conductivity of XLPE MVAC Cables",

abstract = "The increasing demand for electrical energy poses new challenges on the existing transmission and distribution grid. To overcome these challenges, the DC transmission in the MV grid will play an important role in future. To achieve a cost-effective solution, research is focusing on the use of MVAC cable systems for MVDC. MVDC cables with extruded insulation exhibit phenomena such as the accumulation of space charges in the insulation bulk. Furthermore, space charges accumulate at interfaces. Since the semi-conductive layers in cables represent such interfaces and the interaction with the insulation could be crucial for reliable operation, leakage current measurements are carried out on XLPE plate samples with and without an extruded semi-conductive layer. The material was taken from an MVAC cable. The apparent DC conductivity is measured in a temperature range of 25°C-90°C and for an electric stress up to 20 kV/mm.",

keywords = "DC conductivity, MVDC, MVDC cable insulation, semi-conductive layer, space charge accumulation, XLPE",

author = "Patrik Ratheiser and Uwe Schichler",

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T1 - Impact of Semi-Conductive Layers on the DC Conductivity of XLPE MVAC Cables

AU - Ratheiser, Patrik

AU - Schichler, Uwe

PY - 2024/8/12

Y1 - 2024/8/12

N2 - The increasing demand for electrical energy poses new challenges on the existing transmission and distribution grid. To overcome these challenges, the DC transmission in the MV grid will play an important role in future. To achieve a cost-effective solution, research is focusing on the use of MVAC cable systems for MVDC. MVDC cables with extruded insulation exhibit phenomena such as the accumulation of space charges in the insulation bulk. Furthermore, space charges accumulate at interfaces. Since the semi-conductive layers in cables represent such interfaces and the interaction with the insulation could be crucial for reliable operation, leakage current measurements are carried out on XLPE plate samples with and without an extruded semi-conductive layer. The material was taken from an MVAC cable. The apparent DC conductivity is measured in a temperature range of 25°C-90°C and for an electric stress up to 20 kV/mm.

AB - The increasing demand for electrical energy poses new challenges on the existing transmission and distribution grid. To overcome these challenges, the DC transmission in the MV grid will play an important role in future. To achieve a cost-effective solution, research is focusing on the use of MVAC cable systems for MVDC. MVDC cables with extruded insulation exhibit phenomena such as the accumulation of space charges in the insulation bulk. Furthermore, space charges accumulate at interfaces. Since the semi-conductive layers in cables represent such interfaces and the interaction with the insulation could be crucial for reliable operation, leakage current measurements are carried out on XLPE plate samples with and without an extruded semi-conductive layer. The material was taken from an MVAC cable. The apparent DC conductivity is measured in a temperature range of 25°C-90°C and for an electric stress up to 20 kV/mm.

KW - DC conductivity

KW - MVDC

KW - MVDC cable insulation

KW - semi-conductive layer

KW - space charge accumulation

KW - XLPE

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BT - 2024 IEEE 5th International Conference on Dielectrics (ICD)

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Impact of Semi-Conductive Layers on the DC Conductivity of XLPE MVAC Cables

Abstract

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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