试验研究VFTO作用下层式绕组暂态特性  

Research of transient characteristic on subsection layer type winding under the VFTO

作　　者：郑殿春[1] 翟修全[1] 赵大伟[1] 吕树明[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2012年第1期31-38,共8页Electric Machines and Control

基　　金：国家自然科学基金(51077032);黑龙江省教育厅科学技术研究项目(12511z008)

摘　　要：为了研究特快速暂态过电压(VFTO)对层式绕组绝缘的影响,设计制作了分段层式绕组试验模型,该模型分为4段,每段5层,以每1层为1个单元,共分20个单元。试验过程分别对该分段层式绕组模型中有铁心和无铁心注入VFTO脉冲电压信号,并采集记录了入波后分段层式绕组模型各个单元节点电压信息,通过各节点电压信息分析了分段层式绕组模型暂态电位分布情况,并根据入波电压和响应电压求出分段层式绕组电压传输函数的幅频特性,分析了分段层式绕组中谐振频率情况。试验研究结果为层式绕组的绝缘结构设计提供了理论依据。In order to investigate and understand the influence of subsection layer type transformer winding insulation structure under the very fast transient overvoltage （VFTO）, a subsection and layer type transformer winding experimental model is designed. The model was divided into four sections, and each period was composed of five layers with each layer being a unit, which consist of 20 units. Then it respectively injected VFTO voltage signal into air-core winding and core winding experimental models and sampled the voltage waveform of each node of subsection-layer type winding through which the transient potential distribution of subsection-layer type winding was analyzed. Finally, the response voltage of each unit node of winding was also detected, by comparing it with voltage after injecting VFTO impulse to obtain the amplitude-frequency characteristic curve of voltage transfer function of subsection-layer type winding. Then it analysed the resonant frequency of a subsection and layer type transformer winding which provided theory basis for the subsection and layer type transformer winding insulation structure design,

关 键 词：分段层式绕组模型 特快速暂态过电压 暂态电位分布 幅频特性 谐振频率 

分 类 号：TM855[电气工程—高电压与绝缘技术]