大型水轮发电机定子线棒介质损耗测量探讨

Research on Measurement ofLarge Hydrogenerator Stator Coils Dielectric Loss Factors

绝缘介质损耗是反映高压电气设备绝缘性能的一项重要指标。介损的测量值直接影响对绝缘性能的判断。本文结合三峡工程左岸、右岸及地下电站的定子线棒出厂试验实际情况,就定子线棒介损测量的有关问题进行分析,探索适合水轮发电机定子线棒的介质损耗测量的方法。

Dielectric loss factor is an important index reflecting the insulation level of high voltage electrical equipment.Dielectric loss factors measurement influence judgment of insulation level.The paper is based on actual test on stator coils dielectric loss factors of left and right bank power stations and underground station in the three gorges project.Problems associated with dielectric loss factors measurement of stator bars are analyzed.Researches are carried out on measurement method of dielectric loss factor of hydrogenerator stator bars.