基于Brune综合法的HVDC换流站阀系统宽频建模  

Wide Frequency Modeling for the Valve System of HVDC Converter Stations Based on Brune Synthesis Method

作　　者：刘磊 崔翔[2] 孙海峰[2] 王琦 

机构地区：[1]南方电网技术研究中心,广州510623 [2]华北电力大学电气与电子工程学院,北京102206

出　　处：《南方电网技术》2009年第6期47-51,共5页Southern Power System Technology

基　　金：国家自然科学基金项目(50707008;50777017);"十一五"国家科技支撑计划重大项目(2006BAA02A20)~~

摘　　要：为了预测计算晶闸管开断产生的电磁干扰噪声,准确建立阀系统各元件(晶闸管、阻容均压回路、均压电容、饱和电抗器)的宽频等效电路模型是十分必要的。为此,提出基于Brune综合法的HVDC换流站阀系统宽频建模方法:在测量得到各元件散射参数后,对测量到的数据进行转换和有理逼近,得到有理逼近表达式后应用网络综合方法进行电路建模。将等效电路的EMTP仿真结果与测量结果进行比较,验证了模型的正确性。In order to calculate and predict the EMI noise produced by the valve ignition, it is essential to develop accurate models of valve equipments （thyristor, snubber circuit, equalized capacitance, saturation reactor） over a broad frequency range. The wide frequency modeling for the valve system of HVDC converter station based on Brune synthesis method was proposed in this paper： After measuring the frequency dependent impedance of the elements, the wide frequency equivalent circuit model of valve elements can be set up with rational approximation and Brune synthesis method. At last the equivalent circuit model is put into EMTP to simulate, and compared with the measuring results to ensure the efficiency and accuracy of the model

关 键 词：Brune综合法 HVDC 阀元件 宽频模型 

分 类 号：TM743[电气工程—电力系统及自动化] TM721.1