摘要
为满足复杂土壤环境对接地材料耐腐蚀性以及高频雷电流和短路故障入地电流对接地材料热稳定性的要求,研制了一种强通流能力的石墨基柔性接地材料。通过耐腐蚀试验分析了石墨基柔性接地材料与钢材类材料的耐腐蚀性能;试验对比了圆钢与石墨基柔性接地材料与不同土壤的接触性能;仿真研究了石墨基柔性接地材料的热稳定性以及冲击散流有效利用长度。研究结果表明：石墨基柔性接地材料耐腐蚀性强,预期使用寿命超过30 a;其与土壤接触性能优于圆钢,接触电阻降低约30%;冲击散流有效长度增加约30%。
In order to meet the requirements of corrosion resistance of grounding material and thermal stability of the grounding material under the condition of power frequency current and high frequency lightning current scattering into the ground in the case of short circuit fault and lightning strikes, we developed a kind of high current capability graphite flexible grounding material. The corrosion resistance of the graphite flexible grounding material and the steel type grounding material was compared by the simulated corrosion tests. The contact performance with different soil of graphite flexible grounding material and round steel was compared. The thermal stability and the impulse current effective length of this grounding material were studied by means of simulation calculation. The results show that the graphite flexible grounding material has a strong corrosion resistance, whose reliable service life can exceed 30 years. Compared with the round steel, the contact resistance with soil can be reduced by about 30%, and the impulse current effective length can be increased by about 30%.
作者
黄道春
陈家宏
谷山强
赵淳
阮江军
崔振兴
HUANG Daochun;CHEN Jiahong;GU Shanqiang;ZHAO Chun;RUAN Jiangjun;CUI Zhenxing(School of Electrical Engineering, Wuhan University, Wuhan 430072, China;NARI Group Corporation（State Grid Electric Power Research Institute）, Nanj ing 211106, China;Wuhan NARI Limited Company, State Grid Electric Power Research Institute, Wuhan 430074, China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention, Wuhan 430074, China;Wuhan Hongmen Electrical Technology Co. Ltd., Wuhan 430000, China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2018年第6期1766-1773,共8页
High Voltage Engineering
基金
湖北省自然科学基金创新群体项目(2016CFA007)~~
关键词
石墨基柔性接地材料
耐腐蚀性
接触电阻
热稳定性
冲击散流有效长度
graphite flexible grounding material
corrosion resistant characteristic
contact resistance
thermal stability
impulse current effective length
