摘要
针对输电线路融冰问题,应用集肤效应和电介质热效应理论研究了一种18kV、40 kHz的高频激励融冰。该方法通过提高融冰电流的频率,加深导线的集肤效应,使产生焦耳热更集中于导线表面;同时利用冰在高频电场作用下反复极化所产生的介质损耗热,以较小的电流达到融冰所需的热功率。以50 km、110kV电压等级输电线路为参考对象,施加高频高压激励,使焦耳热和介质损耗热的总和在线路上均匀分布。并通过有限元分析软件ANSYS进行仿真计算,仿真结果验证了18kV、40 k Hz高频激励融冰的可行性及高效性。
To solve the issue of transmission line de-icing,a de-icing method of 18kV,40 kHz high frequency based on skin effect and dielectric thermal effect theory is proposed.The skin effect of transmission lines is strengthened by increasing the frequency of de-icing current,the Joule heat focuses on the skin of lines more.And using the dielectric loss-heat produced by ice polarization in the high frequency electric field,the current can be decreased with the de-icing heating power requirement.A study example of 50 km、10kV power line powered by high frequency high voltage,with the Joule heat and dielectric loss uniformly distributing in the line,the feasibility and efficiency of the 18kV,40 kHz high frequency de-icing method are identified by ANSYS finite element analysis.
作者
马晓红
代洲
周羽生
熊强
王贤军
杨廷方
汤赐
MA Xiaohong;DAI Zhou;ZHOU Yusheng;XIONG Qiang;WANG Xianjun;YANG Tingfang;TANG Ci(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550000,China;Key Laboratory of Ice Disaster Prevention of Guizhou Power Grid Co.,Ltd.,Guiyang 550000,China)
出处
《电瓷避雷器》
CAS
北大核心
2019年第2期175-180,共6页
Insulators and Surge Arresters
基金
贵州电网防冰减灾重点实验室研究项目(编号:GZ2015-2-0055)
国家自然科学基金资助项目(编号:5130700)
关键词
输电线路
高频融冰
集肤效应
介质损耗
有限元分析
transmission line
high frequency de-icing
skin effect
dielectric loss
finite element analysis
