Open AccessChallenges when measuring the DC electric field very close to an insulator surface
Author(s) -
Birgitta Källstrand,
Daniel Borg,
Lars Walfridsson,
Kenneth Johansson,
C. B. Doiron
Publication year - 2018
Publication title -
proceedings of the nordic insulation symposium
Language(s) - English
Resource type - Journals
ISSN - 2535-3969
DOI - 10.5324/nordis.v0i23.2449
Subject(s) - insulator (electricity) , electric field , measure (data warehouse) , surface (topology) , acoustics , electrical engineering , physics , materials science , optics , optoelectronics , computer science , engineering , mathematics , quantum mechanics , geometry , database
A small probe that can measure DC electric fields in air has been developed. As a consequence of the probe size, it is possible to measure close to the surface of e.g. an HVDC insulator, and to resolve the field with an excellent spatial resolution. However, challenges have been identified when performing measurements close to a surface and its influence on the measurement results have been quantified. Measurement procedures have been developed to be able to correct for the possible net charging of the probe.