中国电机工程学报2018，Vol.38Issue(9)：2763-2771,9.DOI:10.13334/j.0258-8013.pcsee.170757
感应脉冲电压下电机绕组局部放电近场测量技术及应用
Near-field Partial Discharge Measurement Technology and Application in Rotating Machine Winding Under External Induced Impulse Voltage
摘要
Abstract
In order to detect the insulation defects, especially inter-turn defects, in form-wound coils or windings for rotating machines, a method based on partial discharge (PD) measurement under induced impulse voltage has been proposed in previous researches. In this paper, the wideband modeling and analysis of rotating machine winding based on its impedance spectrum was carried out. Furthermore, combined with transmission line theory, the propagation and attenuation characteristics of PD pulse signals originated from the insulation defect along the winding were derived. It has been proved that, the technically feasible option to achieve fully capture of the PD signals under induced impulse voltage is near-field measurement. The research also provided the guidance for developing a new high-frequency current sensor based on the near-field electromagnetic induction. Finally, the general design of impulse induction and PD testing unit was introduced, and a typical actual case of this PD detection was presented.关键词
阻抗谱/传输线模型/感应脉冲电压/局部放电/电机绕组Key words
impedance spectrum/transmission line model/induced impulse voltage/partial discharge/machine winding分类
信息技术与安全科学引用本文复制引用
张天龙,刘学忠,张蕊,刘枰..感应脉冲电压下电机绕组局部放电近场测量技术及应用[J].中国电机工程学报,2018,38(9):2763-2771,9.基金项目
国家自然科学基金项目(51477133).Supported by the National Natural Science Foundation of China (51477133). （51477133）
