Analysis of aging characteristics of generator stator insulation based on loss properties of dynamics and dielectric

作者：Jia Zhi Dong^*; Hao Yan Peng; Jiang Xiong Wei; Xie Heng Kun; Geng Rui Xiang

来源：Proceedings of the CSEE, 2000, 20(11): 1-5.

• Dielectric loss
• Dynamic mechanical properties

Epoxy-mica stator insulation system is one of the most important parts of generator. In most cases the reliability and residual life of generators greatly depend on the condition of stator insulation. A accelerated aging test was conducted on epoxy-mica insulation under electrical-thermal stress and thermal-mechanical stress. In the period of aging, dynamic mechanical analysis was employed to investigate the aging characteristics of insulation materials. The test results show that the trend of dynamic mechanical properties is fairly consistent with that of dielectric dissipation. Accordingly, the dynamic mechanical properties can be used to describe the aging characteristics of stator insulation epoxy-mica.

• 出版日期2000