基于d-q坐标的谐波与无功电流检测方法及仿真分析  

Simulative analysis of harmonic and reactive currents detection based on d-q transformation

作　　者：李增国[1] 丁祖军[2,3] 梅军[2] 

机构地区：[1]江苏畜牧兽医职业技术学院机电工程系,江苏泰州225300 [2]东南大学电气工程学院,江苏南京210096 [3]淮阴工学院电子与电气工程学院,江苏淮安223000

出　　处：《电力自动化设备》2009年第11期71-73,86,共4页Electric Power Automation Equipment

摘　　要：通过对abc三相坐标进行d-q坐标变换的方法,提出了一种新型的基于d-q坐标变换的谐波与无功电流的检测方法。该方法通过对三相电压与电流进行d-q变换后对相应的分量进行分离的方法实现对谐波与无功电流的检测。详细地说明了基于d-q坐标变换的谐波与无功电流检测算法的流程,给出了具体的框图并其特点进行了总结;同时利用PSCAD/EMTDC软件对基于d-q坐标变换的谐波与无功电流检测方法进行仿真分析。仿真结果表明,所提方法可以准确及时地实现电网中谐波与无功电流的检测。A method of harmonic and reactive currents detection based on d-q coordinates transformation for three-phase voltage and current is proposed, which separates the responding components after d-q transformation to realize the current detection. The detection algorithm is introduced in detail, its block diagram is given and its features are summarized. Simulative analysis is carried out with PSCAD/EMTDC, which shows that the harmonic and reactive currents are deteeted precisely and timely.

关 键 词：有源电力滤波器 D-Q变换 无功电流检测 谐波电流检测 PSCAD仿真 

分 类 号：TM761[电气工程—电力系统及自动化] TM935.24