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高压电器  2015 

相序对特高压交流输电线下工频电磁场影响的仿真分析研究

, PP. 82-87

Keywords: 相序,特高压,工频电磁场,仿真

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Abstract:

在实际工程中,特高压交流输电线路为保证三相平衡经常采用变相序的方法进行运行。为掌握相序对特高压交流输电线下工频电磁场的影响情况,笔者以荆门―南阳―晋东南1000kV特高压输电线路为例,采用线单元模拟电荷法和基于毕奥―沙伐尔定律的数值计算方法分别对不同相序运行时的工频电场和工频磁场分布情况进行了仿真分析。分析发现同相序排列时电场强度较大,逆相序排列时电场强度较小,而工频磁场在逆相序排列方式时稍大,在同相序排列方式时较小。

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