Title :
Study on Multi-Factor Aging Characteristics of Generator Stator Bars
Author :
Yuao, Jiang ; Yu, Du ; Naikui, Gao ; Libing, Lui ; Baihua, Zhang ; Aide, Zhang
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equipment, Xi´´an Jiaotong Univ.
Abstract :
A long-term accelerated aging test is conducted on the stator bar of 300 MW/18 KV generator by using a multi-factor aging test system which combines electrical, thermal and vibrational stresses. Under the multi-factor aging, the developing rule of the dielectric loss, partial discharge parameters and breakdown voltage of stator bar sample with aging time is investigated. Moreover the characteristic parameters used to assess the aging condition of stator insulation are stated, which provides a basis to predict the breakdown voltage of stator bar in generator
Keywords :
ageing; dielectric losses; electric generators; insulation testing; life testing; machine insulation; machine testing; partial discharges; stators; 18 KV; 300 MW; accelerated aging test; aging time; breakdown voltage; dielectric loss; electrical stress; generator stator bars; multifactor aging characteristics; partial discharge parameters; stator insulation; thermal stress; vibrational stress; Aging; Character generation; Dielectric loss measurement; Dielectric losses; Dielectrics and electrical insulation; Insulation testing; Partial discharges; Power generation; Stator bars; Voltage;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284171
