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高压电器  2015 

磁控式并联电抗器数值计算研究

, PP. 93-97

Keywords: 超高压,磁控式,并联电抗器,谐波分析,控制特性,有限元,数值分析,场路耦合

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Abstract:

为了限制长距离输电线路上过电压和补偿线路充电功率,需要在超高压交流输电线路上装设高补偿度的并联电抗器。磁控式并联电抗器由于受铁心饱和特性影响,网侧绕组电流中不可避免地含有高次谐波。笔者以世界上首套500kV可控示范工程为基础,提出一种基于2D有限元场路耦合方法,计算分析可控高抗控制特性,并与江陵荆门换流站500kV磁控式电抗器实测结果对比。最后,基于上述方法对超高压750kV可控并联电抗器网侧绕组励磁特性及谐波含量进行分析,通过与现场运行实测数据对比,验证计算方法满足工程应用的有效性。

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