Dielectric response analysis of real insulation systems
2004 (English)In: Proceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSD 2004, 2004, 1-10 p.Conference paper (Refereed)
Real insulation systems are often heterogeneous and sometimes non-linear. In this paper we discuss the application of dielectric frequency response methods to a number of such practically important systems. Important examples of composite insulation systems are the oil/cellulose insulation of power transformers and the glass-mica-epoxy system of machine insulation. A few examples of non-linear effects and their implication for dielectric response analysis are discussed. These include narrow liquid ducts in transformer insulation, exhibiting a voltage dependent conductivity, polymer cables with water trees exhibiting non-linear behaviour that is the basis for diagnosis. The relation between partial discharges and dielectric response is elucidated and finally the special problems of measuring non-linear field grading material is discussed.
Place, publisher, year, edition, pages
2004. 1-10 p.
Cross-linked polyethylene (XLPE) cables, Dielectric frequencies, Dielectric response, Non-linear field grading materials, Real insulation systems, Capacitance, Electric insulators, Electric potential, Electric transformers, Harmonic analysis, Natural frequencies, Nonlinear systems, Partial discharges, Polarization, Dielectric properties
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-157300DOI: 10.1109/ICSD.2004.1350276ISI: 000223357100001ScopusID: 2-s2.0-15844364975ISBN: 0780383486ISBN: 9780780383487OAI: oai:DiVA.org:kth-157300DiVA: diva2:771042
Proceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSD 2004, 5 July 2004 through 9 July 2004, Toulouse, France
QC 201412122014-12-122014-12-082014-12-12Bibliographically approved