采用新型换流变压器的直流输电稳态模型  

Steady State Model of the DC Transmission with New Type Converter Transformer

作　　者：李勇[1] 罗隆福[1] 许加柱[1] 李季[1] 刘福生[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082

出　　处：《电力系统自动化》2006年第21期28-32,共5页Automation of Electric Power Systems

基　　金：湖南省重大科技专项资助项目(05GK1002-1)。~~

摘　　要：从2个方面分析了用于测试直流输电运行及控制性能的稳态模型(经典模型)存在的不足,提出了采用新型换流变压器的新的直流输电稳态模型,比较了其与经典模型在结构上的差异,阐述了新型换流变压器的设计特点及利用变压器耦合绕组的谐波安匝平衡作为滤波机理的新型滤波方式,并给出了新模型下换流器的稳态方程。通过详细的仿真计算,时比分析了经典模型与新模型各自的仿真结果,验证了所提出模型的正确性及其在抑制谐波与改善系统稳态运行性能方面的优越性。The steady state model （classical model）, which is used widely to measure the operation and control performance of the dc transmission, adopts the passive filtering method in the AC side. It cannot overcome the harmonic and reaction＇ s adverse effects to converter transformer, and the secondary winding of the converter transformer uses Y-A wiring, which affects the commutation reactance because of the construction＇s asymmetry. This paper analyzes the disadvantages that the classic model has, puts forward a new dc transmission steady state model with a new type converter transformer, compares the construction＇s difference with the classical model, expounds the new type converter transformer＇s design feature and the new type filtering way that uses the coupling winding＇s harmonic ampere-winding balance as the filtering mechanism, and gives the converter＇s steady state equation. Through the detailed simulation, this paper compares the simulation results using the classical and new type model and verifies the model＇ s correctness and the superiority in the harmonic suppression and improving the system steady state operation performance.

关 键 词：直流输电 新型换流变压器 稳态模型 滤波 仿真 

分 类 号：TM42[电气工程—电器]