高电压技术2018，Vol.44Issue(5)：1435-1442,8.DOI:10.13336/j.1003-6520.hve.20180430006
商用直流电缆料采用不同质量分数纳米MgO改性选型
Selection of Commercial DC Cable Material for Modification by Nano-MgO with Different Loading Content
摘要
Abstract
In order to improve the insulation characteristics of commercial DC cables' material under high temperatures, the nanocomposite specimens were fabricated through adding different mass fraction(0.1％, 0.5％, 1％) of nano MgO to materials of commercial DC cables. The positive and negative DC breakdown strength, the space charge distribution of specimen and the conductivity were tested under different temperatures. The results show that the addition of nano-MgO can obviously improve the DC breakdown strength. Adding 0.1％ and 0.5％ nano-MgO to materials of DC cables can reduce the influences of temperature on the conductivity and the space charge characteristics, improve the electrical conductivity and space charge properties under high temperature, and reduce the electric field distortion in the DC cables. After comprehensive comparison, the 0.1％ adding content of nano-MgO is more effective in improving the insulation characteristics of commercial DC cable materials.关键词
直流电缆/氧化镁/纳米复合电介质/温度/击穿特性/空间电荷/电导率Key words
DC cables/MgO/nanocomposite/temperature/breakdown characteristics/space charge/conductivity引用本文复制引用
陈铮铮,赵鹏,赵健康,欧阳本红,王浩鸣,王诗航..商用直流电缆料采用不同质量分数纳米MgO改性选型[J].高电压技术,2018,44(5):1435-1442,8.基金项目
国家重点研发计划(2016YFB0900700) （2016YFB0900700）
国家电网公司科技项目(520314160006).Project supported by National Key Research and Development Program of China (2016YFB0900700), Science and Technology Project of SGCC (520314160006). （520314160006）
