磁控式并联电抗器数值计算研究  

Study on Numerical Calculation of Magnetically Controlled Shunt Reactor

作　　者：邢军强[1] 安振[1] 陈雷[2] 

机构地区：[1]特变电工沈阳变压器集团有限公司,沈阳110144 [2]沈阳工业大学,沈阳110870

出　　处：《高压电器》2015年第4期93-97,103,共6页High Voltage Apparatus

摘　　要：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500 k V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500 k V磁控式电抗器实测结果对比。最后,基于上述方法对超高压750 k V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。To restrict over-voltage and compensate line charging power, it is necessary to install high compensation shunt reactors on ultra-high voltage AC transmission lines. Due to the saturation characteristic of the core during working process, the magnetically controlled shunt reactor（MCSR）contains higher-order harmonics in its high voltage windings. In this paper, the 500 k V MCSR demonstration project is taken as an example, and a finite element-based field-circuit coupling method is proposed to analyze the controlling characteristic of the high voltage winding. The amplitude and frequency of the harmonic in the current of the high voltage winding are calculated with this method. The calculated results are compared with the measured ones of the 500 k V MCSR in Jiangling Converter Station to verify the validity of the proposed method. In addition, the excitation curve and the harmonic current of a 750 k V MCSR are calculated with the proposed method, and the results agree with the measured data.

关 键 词：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 

分 类 号：TM47[电气工程—电器]