混合凇覆冰对输电线路光滑导线起晕电压的影响
发布时间：2019-08-09 19:33
【摘要】：混合凇覆冰导线表面会形成极其粗糙的冰凌及冰树枝,使得覆冰表面电场发生畸变从而影响起晕电压,但目前国内外尚未深入分析混合凇覆冰对光滑导线起晕电压的影响。为此,利用低温低气压气候试验室,对混合凇覆冰光滑导线进行了交流条件下的电晕试验。利用CoroCAM IV+紫外成像仪和I-U曲线拟合法测量了覆冰条件下导线的起晕电压,建立了混合凇有限元模型,并进行了电场分析。结果表明:混合凇覆冰后,光滑导线的起晕电压会出现跌落;随着覆冰更加严重,光滑导线的起晕电压会不断下降,但下降速度逐渐减慢并趋于饱和;当施加的覆冰水电导率不同时,光滑导线的起晕电压及其覆冰形态都无明显变化。所得结论可为混合凇频发地区的输电线路设计提供理论依据。
[Abstract]:The surface of mixed rime icing conductor will form extremely rough ice and ice branches, which will distort the electric field on the icing surface and affect the halo voltage, but the influence of mixed rime icing on the halo voltage of smooth conductor has not been deeply analyzed at home and abroad at present. For this reason, the corona test of mixed rime covered smooth conductor was carried out under AC condition by using low temperature and low pressure climate laboratory. The corona initiation voltage of conductors under icing condition was measured by CoroCAM IV ultraviolet imager and I 鈮，
本文编号：2524962
[Abstract]:The surface of mixed rime icing conductor will form extremely rough ice and ice branches, which will distort the electric field on the icing surface and affect the halo voltage, but the influence of mixed rime icing on the halo voltage of smooth conductor has not been deeply analyzed at home and abroad at present. For this reason, the corona test of mixed rime covered smooth conductor was carried out under AC condition by using low temperature and low pressure climate laboratory. The corona initiation voltage of conductors under icing condition was measured by CoroCAM IV ultraviolet imager and I 鈮，
本文编号：2524962
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