Gaoya dianqi, 2017 采用静电场有限元数值方法,对自主研发的±500 kV柔性直流换流阀的内绝缘和外绝缘特性进行了分析计算。按照子模块最大保护电压,校核换流阀的内绝缘特性;按照阀支架雷电冲击试验,校核换流阀的外绝缘特性。计算结果表明,自主化±500 kV柔性直流换流阀阀塔内部空气中最大电场强度为1.017 kV/mm,屏蔽系统最大电场强度为1.619 kV/mm,底部支撑绝缘子处最大电场强度为2.941 kV/mm。以3 kV/mm作为起晕场强判据,雷电冲击试验下,阀支架无起晕现象。试验结果表明,采用当前换流阀设计方案 ...
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Gaoya dianqi, 2004 工频高压下线管结构反应器可能出现局部电晕放电及气隙中稳定阻挡放电。根据V-qLissajous图形计算了放电功率。随外施电压上升,放电由电晕放电进入稳定阻挡放电,放电电流幅值达数mA,放电功率密度为数百mW·cm-3,去除SO2的能量效率可达30g/（kW·h）。实验表明,稳定阻挡放电时,较高的电压及较大的放电空间可提高能量利用率。
孙岩洲, 邱毓昌, 袁兴成
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