高电压技术2012，Vol.38Issue(4)：941-946,6.
直流陡脉冲复合电场用于变压器油净化时其脉冲波形选择
Selection of Waveform for DC-steep Pulse Field in Transformer Oil Purifying
摘要
Abstract
In order to research a new method to purify transformer oil and to select a better pulse waveform as power supply,firstly,we analyzed the force of colloid impurity in transformer oil,then,we measured permittivity of different aging oil,finally,we analyzed the difference of amplitude-frequency characteristics between the square-wave pulse and exponential decay pulse.These analysis and measurements reveal that time varying electric field has an effect on colloid and can separate it from oil molecule;only the electric field with wide frequency bandwidth can deal with different kinds of colloid,the amplitude-frequency characteristic of exponential decay pulse decays slowly and then exponentially decays with short rising time,and wide pulse width is rich in both low and high frequency.Furthermore,the analysis and tests confirm that the fast rising and wide width bipolar exponential decay pulse is the most ideal waveform for power supply pulse,which will improve the efficiency of oil purify obviously.关键词
直流陡脉冲/净油/胶体杂质/介电常数/指数衰减脉冲/幅频特性Key words
DC-steep pulse/oil purify/colloid/permittivity/exponential decay pulse/amplitude-frequency characteristic分类
信息技术与安全科学引用本文复制引用
米彦,周龙翔,蒋春,王剑飞,姚陈果,李成祥..直流陡脉冲复合电场用于变压器油净化时其脉冲波形选择[J].高电压技术,2012,38(4):941-946,6.基金项目
国家重点基础研究发展计划（973计划） （）
重庆市科委自然科学基金 （）
中央高校基本科研业务费 （）
