Title :
Study on the aging of stator insulation in large generators based on dynamic mechanical analysis
Author :
Hao, Yanpeng ; Jia, Zhidong ; Zeng, Zheng ; Wang, Guoli ; Gao, Naikui ; Xie, Hengkun
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ., China
Abstract :
Using dynamic mechanical analysis (DMA) technique, the aging of stator insulation in two generators (300 MW, 18 kV) after 18 year and 23 year periods of operation respectively was investigated. The 8 temperature spectra of DMA were measured. According to the typical temperature spectra, several parameters of DMA were calculated. The results show that the parameters might be used to characterize the aging of stator insulation in large generators.
Keywords :
ageing; dynamic testing; power transformer insulation; stators; 18 kV; 18 year; 23 year; 300 MW; aging; dynamic mechanical analysis; large generators; stator insulation; temperature spectra; Aging; Capacitive sensors; Dielectric losses; Dielectrics and electrical insulation; Equations; Mechanical variables measurement; Stators; Stress measurement; Temperature; Thermal stresses;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Print_ISBN :
0-7803-7502-5
DOI :
10.1109/CEIDP.2002.1048820
