交流变压器直流偏磁对直流系统传输功率的影响  

Impacts of AC Transformer DC Magnetic Biasing on DC System Transmission Power

作　　者：张功望 欧林[2] 王渝红[2] 杨东斌 左坤 孙海涛 

机构地区：[1]陕西省电力公司检修公司,西安710065 [2]四川大学电气信息学院,成都610065

出　　处：《华东电力》2013年第7期1461-1465,共5页East China Electric Power

基　　金：国家自然科学基金重点项目(51037003);国家电网公司科技项目(JXGS-20121123)~~

摘　　要：在PSCAD/EMTDC中搭建了交流变电站及德宝直流详细模型。分析了750 kV自耦变压器(交流主变)发生直流偏磁时交直流系统中各种谐波的变化情况,详细分析了各谐波幅值大小与直流偏磁程度的关系,推导了直流传输功率波动与直流系统中各次谐波的关系。介绍了仿真结果。Detailed model has been constructed in PSCAD /EMTDC for AC substation and Debao DC Plant.Then this research analyzes the changes of various harmonics in AC / DC system when DC magnetic biasing occurs in 750 kV autotransformer（AC main transformer）,specifically the correlation between the harmonic amplitude with DC biasing degree;thereby derives the relationship between the DC transmission power fluctuation and every subharmonic in DC system.The simulation results are finally introduced.

关 键 词：直流偏磁 自耦变压器 低次谐波 直流输电系统 传输功率 

分 类 号：TM41[电气工程—电器]