Gaoya dianqi, 2010 取消750 kV线路断路器合闸电阻可节省费用,提高断路器运行可靠性。笔者以即将建设的兰州东-银川东750 kV输电线路工程为背景,结合国外对取消合闸电阻的研究,利用电磁暂态计算程序（ATP/EMTP）计算装设1组避雷器和断路器合闸电阻时,线路三相合空线、单相自动重合闸统计操作过电压水平。计算表明,在首末端装设1组避雷器时,三相合空线、单相自动重合闸统计操作过电压最大值分别为2.38 p.u.和2.57 p.u.,在线路线路长度较短时,两端装设避雷器的方法可以将上述两种统计操作过电压抑制到1.80 p.u.
刘渝根, 刘敏, 苏玉萍
doaj
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