CAJ | 학술논문

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。
제출료일충개진적p-q해파검측산법。선통과이론분석추도출료일충계산기파정서전압적신방법，근거계산방법구조료기파정서전압적검측광도，연후양기파정서전압삼여해파검측과정적운산，저양피면료해파전압화불평형전압대운산결과적영향，최후대개진후적산법진행료Matlab방진분석，방진결과표명즉사재전망전압불평형、기변적조건하해산법잉능준학적검측출해파전류，개진후적산법미보료전통산법적불족，사실제해파검측효과경쾌、경호。
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 .