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高压电器  2015 

252 kV GIS用绝缘隔板的机械强度研究

DOI: 10.13296/j.1001-1609.hva.2015.11.025, PP. 150-155

Keywords: GIS,有限元,绝缘隔板,水压试验,机械强度,主应力

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Abstract:

对绝缘隔板的主应力大小、方向和分布情况进行准确的计算和确定是改进设计的前提。笔者采用有限元软件对252kVGIS用绝缘隔板在不同压力下的主应力分布进行了仿真计算,在对其进行的水压试验验证中,采用高速摄像机获取了水压破坏发展过程的影像和破坏时间,采用应变片与动态信号采集分析系统监测了水压试验中绝缘隔板重点部位的主应力变化。分析表明,仿真计算的最大主应力分布和方向与试验结果具有很好的一致性,应力大小存在一定差异,需进一步研究和完善;通过各监测点在破坏前后的应力突变可较为准确判断破坏的位置和发展方向。这些研究方法为各电压等级的各类绝缘隔板的设计优化提供了一定的参考。

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