DocumentCode :
3538260
Title :
Estimation of the structure non-homogeneity of multicomponent insulation of electrical machines using digital measuring methods
Author :
Ziomek, Waldemar ; Moscicka-Grzesiak, H.
Author_Institution :
Inst. of Electr. Power Eng., Poznan Univ. of Technol., Poland
fYear :
1995
fDate :
17-20 Sep 1995
Firstpage :
287
Lastpage :
290
Abstract :
Preliminary studies show that multichannel pulse-height analysis of partial discharges is useful for evaluating the state of the complex dielectric material of the glass fabric/mica paper/resin type, employed for high voltage insulation of electrical machines. Charge distributions of partial discharges characterising the proper samples and those overheated during pressing differ substantially. All the selected parameters characterising partial discharges, determined on the basis of charge distributions, such as the total charge Q, the maximum charge Q max, and the total charge of the last distribution ranges (e.g. charges Q>75% or Q>50%) are of much greater values for the samples overheated during pressing than for the samples properly pressed
Keywords :
charge measurement; composite insulating materials; glass fibre reinforced plastics; hot pressing; insulation testing; machine insulation; machine testing; organic insulating materials; paper; partial discharges; pulse height analysers; HV machines; charge distributions; complex dielectric material; digital measuring methods; electrical machine insulation; glass fabric; high voltage insulation; impregnated insulation; maximum charge; mica paper; multichannel pulse-height analysis; multicomponent insulation; overheating; partial discharges; pressing; resin; structure nonhomogeneity; total charge; Current measurement; Dielectric materials; Dielectrics and electrical insulation; Partial discharge measurement; Partial discharges; Pressing; Pulse measurements; Pulse transformers; Temperature; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulating Materials, 1995. International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-88686-047-8
Type :
conf
DOI :
10.1109/ISEIM.1995.496565
Filename :
496565
Link To Document :
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