【摘要】 定子绕组模型是将定子绕组阻抗频谱和绝缘老化情况联系起来的关键桥梁,为了能够反映不同部位的绝缘老化,需要建立与传统工频模型不同的宽频段的定子绕组模型。从定子绕组绝缘的基本结构出发,整理了已有的定子绕组测量方法与绝缘老化监测之间的关系。按照关注频段的不同,将已有的定子绕组建模方法划分为低频段、中频段和高频段三种类型。根据其侧重点的不同,已有的研究采用不同的方法对当前频域起主导作用的参数进行建模。进一步分析了模型中的参数计算方法,指出了该领域的研究需要在保证参数物理意义明确的前提下寻找精确定量描述各部位绝缘老化与阻抗频谱之间的关系。更多还原

【Abstract】 The stator winding model is a key bridge that connects the stator winding impedance spectrum and insulation aging. In order to be able to reflect the aging of insulation in different parts, it is necessary to establish a broadband stator winding model that is different from the traditional power frequency model. Starting from the basic structure of stator winding insulation, the relationship between existing stator winding measurement methods and insulation aging monitoring is sorted out in this paper. According to the different frequency bands concerned, the existing stator winding modeling methods are divided into three types: low-frequency, mid-frequency and high-frequency. According to the different emphasis, the existing research adopts different methods to model the parameters that play a leading role in the current frequency domain. The parameter calculation method in the model is further analyzed, and it is pointed out that the research in this field needs to find an accurate and quantitative description of the relationship between insulation aging and impedance spectrum of each part on the premise of ensuring the clear physical meaning of the parameters.更多还原