【摘要】 本文介绍了三峡电站ALSTOM 700MW水内冷水轮发电机定子绕组绝缘电阻测量的分析与实践,论述了提高定子绝缘参数测量准确度的几种方法。在测试设备容量足够的情况下,通过提高汇水环管对地电阻或选择内阻较小的微安表,或二者结合应用,均可提高水内冷发电机定子绕组绝缘参数的测量精度。更多还原

【Abstract】 This thesis introduces the analysis and practice of stator winding insulation resistance on Three Gorges Power Plant 700MW water-cooled hydrogenerator manufactured by ALSTOM.Addition to this,the paper also describes the ways of raising the accuracy of stator insulation parameters.We can improve the stator insulation measurement accuracy of water-cooled generator by raising the insulation resistance of cooling water collecting duct to earth or choosing a microampere meter with smaller internal resistance,or by both measures above.更多还原