Study of capacitance and dissipation factor tip-up to evaluate the condition of insulating systems for high voltage rotating machines

authored by: Mohsen Farahani, Hossein Borsi, Ernst Gockenbach
Abstract: In order to investigate the significance of the capacitance and dissipation factor measurements as a function of test voltage for insulating systems of high-voltage rotating machines a series of measurements have been done on simple epoxy resin specimens and actual stator bars which have been manufactured based on the epoxy VPI technology. The possibilities of proposition of a relation between the maximum variation of the dissipation factor and capacitance with applied test voltage and the relative volume of the air-filled voids were investigated. Also the stator bars have been aged by different accelerated aging procedures and the changes of the capacitance and dissipation factor as a function of voltage were studied during the aging procedures.
Organisation(s): High Voltage Engineering and Asset Management Section (Schering Institute)
Type: Article
Journal: Electrical engineering
Volume: 89
Pages: 263-270
No. of pages: 8
ISSN: 0948-7921
Publication date: 03.2007
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electrical and Electronic Engineering, Applied Mathematics
Electronic version(s): https://doi.org/10.1007/s00202-006-0011-9 (Access: Unknown)