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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Impact of icing severity on corona performance of glaze ice-covered conductor
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Impact of icing severity on corona performance of glaze ice-covered conductor

机译：覆冰严重程度对釉面冰覆导体电晕性能的影响

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摘要

This paper presents the results of laboratory experiments carried out on an ac-energized stranded conductor subjected to simulated glaze icing, which were conducted in a corona cage located in an artificial climate chamber. With the increase of icing duration, the grow of icing severity of conductors lead to the corona onset voltage fell from 54.8 to 41.9 kV, correspondingly, the surface irregularity of stranded conductor decreased from 0.41 to 0.31. Through the ultraviolet photon frame and ultraviolet photon curve, corona development process of glaze ice-covered conductor were divided into three stages, that is, burst corona mode, comprehensive corona mode and glow mode. The impact of icing severity on the corona loss and audible noise was investigated. With regard to corona loss, it is in proportion to icing severity at a given surface gradient, whereas no obvious impact was observed with audible noise could be established. In addition, corona performance in comparison with rain condition was also studied, the corona loss of glaze ice-covered conductor was higher than that of rain, instead the audible noise of glaze ice-covered conductor was lower than that of rain after a certain surface gradient. The presented results could provide references to the design of ac overhead transmission lines crossing cold regions.
机译：本文介绍了在经过模拟釉处理的交流通电绞合导体上进行的实验室实验结果，这些实验是在位于人造气候室内的电晕笼中进行的。随着结冰时间的增加，导体的结冰强度的增加导致电晕起始电压从54.8 kV下降至41.9 kV，相应地，绞合导体的表面不规则度也从0.41降低至0.31。通过紫外光子框架和紫外光子曲线，将釉冰覆盖导体的电晕发展过程分为爆裂电晕模式，综合电晕模式和发光模式三个阶段。研究了结冰严重程度对电晕损失和可听噪声的影响。关于电晕损失，它与给定表面梯度下的结冰严重程度成正比，而没有观察到明显的影响，可以听到声音。另外，还研究了与雨天相比的电晕性能，釉面冰覆盖导体的电晕损失高于雨水，取而代之的是，在一定的表面下，釉面冰覆盖导体的可闻噪声低于雨水梯度。提出的结果可为穿越寒冷地区的交流架空输电线路的设计提供参考。

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