New Insulating Materials for Next Generation of HVDC Cables - Methods for Evaluation of Degradation Phenomena by Electrical Treeing
Paper in proceeding, 2013
The ongoing in Sweden research activities aim to
elaborate new material concepts that can be
applicable in designing and manufacturing high
voltage direct current (HVDC) cables for very high
voltage levels, up to 800 kV. This task focuses on
investigating possibilities provided by use of
materials containing nanofillers and voltage
stabilizers. Variations in breakdown strength,
electrical conductivity and control of space charges
with temperature and composition as well as their
stability during long-term operation are investigated.
This paper describes a part of the work that
concentrates on elaborating a robust methodology
for testing material resistance to electrical tree
inception. It is argued that AC treeing test under
ramped voltage may effectively be used for
screening candidate materials for applications in
HVDC cable insulation.
Author
Stanislaw Gubanski
Chalmers, Materials and Manufacturing Technology, High Voltage Engineering
Ulf Gedde
Proc. of Jicable HVDC'13 Seminar
paper 3-2
Areas of Advance
Energy
Materials Science
Subject Categories
Other Electrical Engineering, Electronic Engineering, Information Engineering