雨凇覆冰对输电线路光滑铝导线起晕电压的影响

发布时间：2018-06-10 18:07

本文选题：光滑导线 + 雨凇覆冰　；参考：《高电压技术》2014年05期

【摘要】：为探求雨凇覆冰形态对输电线路导线电晕起始特性的影响规律,在低温低气压人工气候试验室内完成了光滑铝导线的雨凇覆冰及覆冰后的交流电晕试验,并结合紫外成像仪技术和电流-电压(I-U)曲线拟合方法对雨凇形貌和导线起晕电压进行了测量和分析。试验结果表明:光滑导线上雨凇覆冰导致其起晕电压严重降低,且随着覆冰时间延长,导线起晕电压还将持续下降,但下降的速度呈逐渐减慢的趋势;雨凇覆冰形态并不随覆冰水电导率的不同而发生改变,但随着覆冰水电导率的增加,导线起晕电压会逐渐降低。所得结论可供雨凇频发地区的输电线路设计与选型参考。
[Abstract]:In order to find out the effect of the form of rime on the corona initiation characteristics of transmission line conductors, the rime and AC corona tests of smooth aluminum conductors were completed in the low temperature and low pressure artificial climate test room. The morphology of rime and the corona voltage of conductor were measured and analyzed by combining the ultraviolet imager technique and current-voltage I-U curve fitting method. The test results show that the corona voltage of smooth conductors will decrease seriously due to the rime icing, and the corona voltage will continue to decrease with the prolongation of the icing time, but the decreasing speed will gradually slow down. The form of rime ice does not change with the conductivity of ice water, but with the increase of conductivity, the corona voltage decreases gradually. The conclusions can be used as a reference for the design and selection of transmission lines in rime-prone areas.
【作者单位】：重庆大学输配电装备及系统安全与新技术国家重点实验室;
【基金】：国家重点基础研究发展计划(973计划)(2009CB724502;2009CB724501) 国家重点实验室项目(2007DA10512708101;2007DA10512708102)~~
【分类号】：TM852

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