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电机绝缘系统在高频冲击下局部放电试验研究
引用本文:张生德,汪双灿,赵超. 电机绝缘系统在高频冲击下局部放电试验研究[J]. 航空动力学报, 2018, 45(2): 102-105
作者姓名:张生德  汪双灿  赵超
作者单位:上海电器科学研究院,上海200063;上海电机系统节能工程技术研究中心有限公司,上海200063,上海电器科学研究院,上海200063,上海电机系统节能工程技术研究中心有限公司,上海200063
基金项目:上海张江国家自主创新示范区专项发展资金重点项目(201609-PT-C1085-002)
摘    要:高频冲击局部放电(PD)测试可以有效的检测电机绝缘系统的绝缘状态。根据传感器的不同,电机绝缘系统在高频冲击下PD测试方法主要有两种:高频电流传感器法和超高频天线法。试验表明:在高频冲击电压下,PD主要发生在冲击的上升沿和下降沿,在同一放电电压下,上升沿和下降沿的PD幅值较大;在风力发电机定子绝缘系统鉴别试验中,随着老化试验的进行,线圈的PD起始电压总体呈下降趋势。通过鉴别试验,可以确定绝缘系统的冲击电压绝缘等级及类型。

关 键 词:电机   高频冲击电压   局部放电   绝缘系统

Study on the Test of Partial Discharge Under High Frequency ImpulseVoltage for Motor Insulation System
ZHANG Shengde,WANG Shuangcan and ZHAO Chao. Study on the Test of Partial Discharge Under High Frequency ImpulseVoltage for Motor Insulation System[J]. Journal of Aerospace Power, 2018, 45(2): 102-105
Authors:ZHANG Shengde  WANG Shuangcan  ZHAO Chao
Affiliation:Shanghai Electrical Apparatus Research Institute, Shanghai 200063, China;Shanghai Engineering Research Center of Motor System Energy Saving Co., Ltd., Shanghai 200063, China,Shanghai Electrical Apparatus Research Institute, Shanghai 200063, China and Shanghai Engineering Research Center of Motor System Energy Saving Co., Ltd., Shanghai 200063, China
Abstract:The measurement of partial discharge (PD) under high frequency impulse voltage may be effective to check the insulation condition of the motor insulation system. Depending on the sensor, there were two methods of detecting PD under high frequency voltage for the motor insulation system: Highfrequency Current Transducer and ultrahigh frequency antenna. The PD activities mainly occur in both pulse rising edge and falling edge under the impulse voltage. The amplitudes of PD in both rising edge and falling edge were higher under the same applied voltage. In the qualification test of stator insulation system of wind turbines, the PD inception voltages of the coil were decreasing with the aging test. the impulse voltage insulation class and type of stator insulation system are determined by the qualification test.
Keywords:motor   high frequency impulse voltage   partial discharge   insulation system
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