Utilisation of voltage and frequency dependence of stress-grading materials in dielectric diagnostics
2004 (English)In: 2004 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA, NEW YORK: IEEE , 2004, 178-181 p.Conference paper (Refereed)
Diagnostics of electrical insulation is increasingly performed with the frequency and amplitude of the applied voltage varied over wide ranges. Cable terminations and high-voltage machine end-windings have stress grading systems whose response alters measured capacitance and loss components even in measurements at power frequency. Non-linear stress grading materials also contribute harmonic currents to the measured response. Excitation at frequencies other than power frequency changes the grading's potential-distribution, affecting the measured capacitance and possibly inciting partial discharges that contribute to measured loss and harmonic currents. Understanding of the effects of such stress grading systems is important for analysis and possible compensation of dielectric measurement data.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2004. 178-181 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-44339ISI: 000225187200042ScopusID: 2-s2.0-17744362876ISBN: 0-7803-8584-5OAI: oai:DiVA.org:kth-44339DiVA: diva2:450982
Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Location: Boulder, CO Date: OCT 17-20, 2004
QC 201110242011-10-242011-10-202011-10-24Bibliographically approved