Title :
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
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 tanδE (the dielectric dissipation factor at the line-ground voltage), Pi2 (the second AC current rapid increase voltage) and Nq (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;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on
Print_ISBN :
0-7803-7725-7
DOI :
10.1109/ICPADM.2003.1218406
