一种单相无功和谐波电流的检测方法

A Single Phase Reactive Power and Harmonic Current Detection Method

无功和谐波补偿装置在工业中有许多的应用,有效检测无功和谐波电流是进行补偿的前提。基于DQ分解法的瞬时功率理论在三相电路的无功和谐波检测中已有成熟的应用,但是单相电路的无功和谐波电流的检测依然没有很好的办法。该文提出了一种基于单相电路瞬时功率理论的单相电路无功及谐波电流检测方法,通过数学关系推导说明了无功和谐波电流的分解原理,并通过Matlab验证了所提内容的正确性和有效性。

Reactive power and harmonic compensation device has many applications in industrial,effective reactive power and harmoniccurrent detection is the precondition of compensation.By the DQ decomposition method of instantaneous power theory,The reactive powerand harmonic circuit detection in three-phase is mature,but the reactive power and harmonic current testing in single-phase circuithave not been well done.Based on the single-phase circuit instantaneous reactive power theory,this paper proposes a single-phasecircuit and harmonic current detection method,The mathematical relationship shows the decomposition principle of reactive power andharmonic current,and,the correctness and validity of the proposed contentis verified by Matlab.