周象贤,刘岩
ZHOU Xiangxian,LIU Yan

• 1:国网浙江省电力公司电力科学研究院

摘要(Abstract)：

直流输电线路电晕放电所产生的空间离子会使得地面附近的电场大幅增加,产生合成电场问题。为了降低线路下方某些敏感区域的合成电场,需要采取一些屏蔽措施。采用通量线法对屏蔽线和屏蔽网2种合成电场屏蔽措施进行定量计算分析,结果显示屏蔽网的屏蔽效果更好,屏蔽线更适合用于大区域的合成电场屏蔽。指出了这2种屏蔽措施在实际应用中需要注意的问题。
The ions generated by corona discharge on DC transmission lines will enhance the ground level electric field substantially, resulting in synthetic electric field. Shielding measures is probably necessary to reduce synthetic electric field around sensitive objects under the lines. This paper uses the flux tracing method to analyze the shielding effect of shielding wire and shielding mesh. The results show that the shielding mesh has better shielding effect, while the shielding wire is more appropriate for synthetic electric field shielding in large areas. Several precautions in application of the two shielding measures are proposed.

关键词(KeyWords)： 直流输电线路;合成电场;屏蔽线;屏蔽网;措施
DC transmission lines;synthetic electric field;shielding wire;shielding mesh;measures

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周象贤,刘岩
ZHOU Xiangxian,LIU Yan

DOI: 10.19585/j.zjdl.2015.06.001

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