Comparison of the dielectric response of machine insulation extracted from PDC method and DC Ramp method

高压旋转电机定子绕组绝缘系统的良好性能对 它们在正常运行条件下的可靠性。为了确保绕组绝缘能够安全运行 在给定的服务年限后，直流测试可以承受服务电压并评估其可靠性 已经用了几十年了。在现场使用两种常用的直流电压施加程序：阶跃电压测试法 以及将电压线性提高到预定电平的斜坡电压测试。在这两种情况下， 现代设备，如IRIS Power提供的设备，允许电流持续 录制好了。该项目将使用适当的建模来比较这两种设备的结果 技术，允许工业合作伙伴验证从两个设备和将获得的信息 评估他们评估定子绕组中可能遇到的各种缺陷的潜力。

The good behavior of the stator winding insulation system of high voltage rotating machines is essential to their reliability in normal operating conditions. In order to gain assurance that the winding insulation can safely withstand the service voltage and assess its reliability after a given number of years in service, DC tests have been used for decades. Two common procedures to apply the DC voltage are used in field, the step voltage test and the ramped voltage test for which the voltage is linearly raised up to a predetermined level. In both cases, modern equipment, such as the equipment available from IRIS Power, allows the current to be continuously recorded. This project will compare the result from both these equipment using an appropriate modeling technique, allowing the industrial partner to validate the information obtained from both equipment and will evaluate their potential to assess the various defects that may be encountered in stator windings.