Study on the characteristic parameters used to assess the insulation condition of stator winding

Author

Bo, Yue ; Zhelei, Zhu ; Xiaolin, Chen ; Xie, Hengkun

Author_Institution

State Key Lab. of Electr. Insulation for Power Equipment, Xi´´an Jiaotong Univ., China

Volume

1

fYear

2003

fDate

1-5 June 2003

Firstpage

278

Abstract

In this paper, a multistress aging system was established and the accelerated aging experiment based on the stator bar of 780 kW/6 kV large motor had been conducted in the laboratory. The experiment results show that tanδ_E (the dielectric dissipation factor at the line-ground voltage), P_i2 (the second AC current rapid increase voltage) and N_q (the increase rate of maximum PD quantity) can be used as characteristic parameters to evaluate the aging condition of stator winding insulation.

Keywords

AC machines; ageing; electric breakdown; electric motors; partial discharges; stators; AC current; dielectric dissipation factor; insulation condition; multistress aging system; partial discharge; stator bar; stator winding; stator winding insulation; Accelerated aging; Dielectric measurements; Dielectrics and electrical insulation; Laboratories; Residual stresses; Stator windings; Testing; Thermal stresses; Vibrations; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on

ISSN

1081-7735

Print_ISBN

0-7803-7725-7

Type

conf

DOI

10.1109/ICPADM.2003.1218406

Filename

1218406