发电机绝缘系统快速电老化试验的加速因子  

Acceleration Factors for Faster Voltage Endurance Testing on Generator Insulation Systems

作　　者：Dr.Anna Gegenava 满宇光(译) 

机构地区：[1]不详 [2]哈尔滨电机厂

出　　处：《国外大电机》2018年第3期9-14,共6页

摘　　要：电老化试验（VET）是确认定子绕组绝缘质量的一种有效方法。按照标准IEEE．1553中的A方案，需要花费较长时间，即400h。笔者所在公司开发了一种耗时较少的电老化试验：加速老化试验，同样可以对定子绕组绝缘质量进行确认，仅需要更短的试验时间，50h甚至更少。本文介绍了关于电老化试验的当前工作，包括作者评价发电机定子绕组不同绝缘体系的加速因子，展示了定子绕组不同绝缘体系的各种加速因子的新试验方法和发展情况。Voltage Endurance Testing （VET） is a useful approach to confirm generator stator coil insulation quality. However, the test takes a lot of time - 400 hours for the IEEE 1553 Schedule A option. The author＇s company is developing a shorter duration test - an Accelerated VET - that offers the same kind of confirmation of generator stator coil insulation quality, but at a dramatically shorter test time, 50 hours and less, This article describes VET including recent work done by the authors to evaluate acceleration factors for different components of generator stator winding insulation systems. New testing and development of different acceleration factors for different portions of the generator stator bar insulation system are presented.

关 键 词：电老化试验(VET) 高压旋转电机(HVRM) 预期寿命 表面防晕层(OCP) 失效累积时间 

分 类 号：TM31[电气工程—电机]