高压直流导线下绝缘薄膜表面电荷分布测量
发布时间：2018-07-20 19:17
【摘要】：随着我国高压直流输电工程的大量建设,由电晕放电引起的电磁环境问题显得尤为重要。但是,目前对线路跨越农用大棚时的电场问题研究还不够。当线路下方存在农用大棚时,电荷会在大棚表面发生积累,并对地面的离子流场造成畸变。利用法拉第筒法对PVC塑料薄膜、遮阳网和布料3种介质模型表面电荷密度进行测量,并对比3种材料的荷电特性。通过分析,获得PVC塑料薄膜表面电荷密度的分布特点,以及3种不同材质绝缘薄膜荷电特性的差异。对高压直流输电线路附近大棚表面电场的建模和计算提供参考。
[Abstract]:With the construction of HVDC projects in China, electromagnetic environment problems caused by corona discharge are becoming more and more important. However, the current research on the electric field when the lines cross the agricultural shed is not enough. When there is an agricultural shed under the line, the charge accumulates on the surface of the shed and distorts the ion flow field on the ground. The surface charge density of PVC plastic film, shading net and cloth was measured by Faraday tube method, and the charge characteristics of the three materials were compared. The distribution characteristics of surface charge density of PVC plastic film and the difference of charge characteristics of three kinds of insulating films with different materials were obtained by analysis. It provides a reference for modeling and calculation of surface electric field near HVDC transmission lines.
【作者单位】： 新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家自然科学基金项目(51177041)~~
【分类号】：TM721.1
[Abstract]:With the construction of HVDC projects in China, electromagnetic environment problems caused by corona discharge are becoming more and more important. However, the current research on the electric field when the lines cross the agricultural shed is not enough. When there is an agricultural shed under the line, the charge accumulates on the surface of the shed and distorts the ion flow field on the ground. The surface charge density of PVC plastic film, shading net and cloth was measured by Faraday tube method, and the charge characteristics of the three materials were compared. The distribution characteristics of surface charge density of PVC plastic film and the difference of charge characteristics of three kinds of insulating films with different materials were obtained by analysis. It provides a reference for modeling and calculation of surface electric field near HVDC transmission lines.
【作者单位】： 新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家自然科学基金项目(51177041)~~
【分类号】：TM721.1
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