有功电流分离法在三相电网谐波检测中的应用与研究

Application and Research of Active Current Isolation Method in Harmonic Detection of Three-phase Grid

基于瞬时无功功率的谐波检测是电力系统中常用的一种谐波检测方法,但由于复杂的算法和结构等原因,导致性能指标不够理想。将有功电流分离的检测方法应用于三相电力系统中,通过研究,有功电流分离检测方法的稳态性能和负载发生突变时的动态性能,均优于传统的基于瞬时无功功率的检测方法。

Harmonic detection based on instantaneous reactive power is commonly used method for harmonic detection in a power system,but due to the complexity of the algorithm and architecture,the performance index is not ideal.When the detection method which separates active current is applied to three-phase power system,through investigation,the steady-state behavior of the test method with separation of active current and dynamic performance upon mutated load are superior to traditional detection methods based on instantaneous reactive power.