适用于直流输电换流变压器实时仿真的建模方法  

Modeling Method for Real-Time Simulation of DC Transmission Converter Transformer

作　　者：罗婷 郝正航[1] 杨萍 刘柏霖 许莹 陈湘萍[1] LUO Ting;HAO Zhenghang;YANG Ping;LIU Bolin;XU Ying;CHEN Xiangping(School of Electrical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学电气工程学院,贵阳550025

出　　处：《南方电网技术》2022年第5期19-25,共7页Southern Power System Technology

基　　金：国家自然科学基金资助项目(51867007);第二批国家级新工科研究与实践项目(E-NYDQHGC20202227)。

摘　　要：实时仿真中换流变压器含有大量开关器件,存在仿真硬件的储存容量和计算能力不足的问题,从而导致仿真过载进而严重影响高压直流输电仿真工作的开展。针对该问题,采用理想变压器模型接口算法设计实现有载调压的换流变压器,以CIGRE标准HVDC系统测试模型为例,在Simulink和RT-LAB平台上分别进行离线和实时仿真,对比所设计的基于理想变压器模型法(ideal transformer method,ITM)的无分接开关的换流变压器与带分接头开关的换流变压器,稳态和暂态结果一致。最后得出结论:基于理想变压器模型接口算法实现换流变压器功能,该方法可应用于直流输电实时仿真测试平台的构建。In the real-time simulation,the converter transformer containing a large number of switching devices has the problem of insufficient storage capacity and computing power of the simulation hardware,which causes the simulation to be overloaded and seriously affects the development of the HVDC simulation work.In response to this problem,the ideal transformer model interface algorithm is used to design a converter transformer that implements on-load voltage regulation.Taking the CIGRE standard HVDC system test model as an example,offline and real-time simulations are performed on Simulink and RT-LAB platforms respectively.The steady-state and transient results of the ITM-type converter transformer without tap switch and the converter transformer with tap switch are consistent.Finally,it is concluded that the method of realizing the converter transformer based on the ideal transformer model interface algorithm can be applied to the construction of the real-time simulation test platform of DC transmission.

关 键 词：理想变压器模型法 高压直流输电 换流变压器 分接头控制 RT-LAB 

分 类 号：TM721[电气工程—电力系统及自动化]