Gaoya dianqi为了研究带电污秽颗粒对绝缘子表面积污、电场分布的影响及空气域电晕放电现象，以FXBW-35/70绝缘子为研究对象，采用多物理场耦合有限元软件Comsol Multiphysics搭建了AC-DC、湍流、带电颗粒相互作用及颗粒运动的耦合风洞模型，进行了带电颗粒对绝缘子表面积污、电场和空气域电晕放电分布研究。结果表明：风速越大，迎风区积污速度快于其他区面；粒径增大时，迎风面积污严重，背风区积污很小，侧风区基本无变化；染污中迎风区伞裙表面的电位和电场畸变最为严重，背风区次之，染污后伞裙表面电位、电场有所缓和 ...
李成学, 吕邦欢
doaj
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Gaoya dianqi输电电缆线路运行电流较大，电缆支架涡流损耗和温升的问题被广泛关注，急需寻找一种损耗小、温升低、经济性能良好的支架材料。文中采用多物理场耦合的有限元分步仿真计算方法对220 kV电缆线路的钢、不锈钢和新型玄武岩复合材料支架的涡流损耗和温升进行计算。首先在频域下计算涡流损耗，之后再以涡流损耗作为热源，在瞬态下进行电磁场—温度场—流体场三场耦合计算，从而计算出支架温度分布。该方法在保证计算精度的前提下极大降低了计算的复杂度。计算结果表明：钢支架涡流损耗远大于不锈钢支架和玄武岩支架的涡流损耗。电缆电流为1 ...
周秀 +7 more
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