p-q谐波检测的改进算法与仿真分析  

Improved p-q Harmonic Detection Algorithm and Simulation Analysis

作　　者：张雪亮[1] 刘明光[1] 钟鈜州 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电测与仪表》2014年第17期24-28,共5页Electrical Measurement & Instrumentation

摘　　要：提出了一种改进的p-q谐波检测算法。先通过理论分析推导出了一种计算基波正序电压的新方法,根据计算方法构造了基波正序电压的检测框图,然后让基波正序电压参与谐波检测过程的运算,这样避免了谐波电压和不平衡电压对运算结果的影响,最后对改进后的算法进行了Matlab仿真分析,仿真结果表明即使在电网电压不平衡、畸变的条件下该算法仍能准确的检测出谐波电流,改进后的算法弥补了传统算法的不足,使实际谐波检测效果更快、更好。An improved p-q harmonic detecting algorithm has been proposed in this paper .A new fundamental posi-tive sequence voltage calculating method has been deduced by theoretical analysis , based on which corresponding de-tection framework has been established .The fundamental wave positive voltage can be introduced into the operation process of harmonic detection , which will avoid the influence of harmonic voltage on the computing result .Finally , simulation results show that the proposed algorithm can still accurately detect the harmonic current even in the power grid voltage imbalance or distortion situation ,.Therefore, the improved algorithms will make up the deficiency of the traditional algorithm so as to make the actual harmonic detection results faster and better .

关 键 词：p-q检测 谐波检测 基波正序电压检测 

分 类 号：TM76[电气工程—电力系统及自动化]