摘要
分别测量与研究了大型发电机主绝缘的槽部、出槽口和端部这 3个不同部位的真机线棒绝缘的tanδ、超声声速、动态力学参数和绝缘强度等 4种参数。试验研究发现出槽口附近的主绝缘老化最为严重 。
Ground-wall insulation of end-windings, ground-wall insulation in the slots and ground-wall insulation between above two positions have been obtained from a large generator that has been operated 18 years. Several parameters (tan δ , ultrasonic detecting, DMA, dielectric strength) of the above three positions of the samples have been tested and studied. The test results show that the aging extent of ground-wall insulation between end-windings and the slots 1s the most serious. This conclusion is important in maintenance of large generator and estimating aging state of ground-wall insulation.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2004年第5期23-24,49,共3页
High Voltage Engineering
