王清亮,朱一迪,牛倩,田帅琦.用户层多谐波源的责任区分方法[J].电测与仪表,2018,55(24):27-34. Wang Qingliang,Zhu Yidi,Niu Qian,Tian Shuaiqi.Harmonic responsibility determination method of power ulti-consumer[J].Electrical Measurement & Instrumentation,2018,55(24):27-34.
用户层多谐波源的责任区分方法
Harmonic responsibility determination method of power ulti-consumer
Based on nonsinusoidal power decomposition, a method to determine the harmonic responsibility was proposed for power consumers of point of common coupling. The mechanism of harmonic transmission was analyzed for power multi-consumer. In time domain, the feeder currents were orthogonal decomposed using the distortion voltage as reference according to Fryze power theory. Inharmonic voltage, inharmonic current and harmonic current were defined; then, the consumer linearity were calculated for multi-consumer harmonic source localization. The network equations of harmonic sources were set by using multiport network theory. Because of independence and randomness the paper adopted the Independent Component Analysis to decouple feeder harmonic currents. By isolating observation vector and suing the negative entropy as objective function, the original harmonic currents were determined without considering network harmonic parameters and harmonic source characteristics. At last, the harmonic contribution was determined. Simulation results of the universality models show that the proposed method has more effective for harmonic responsibility determination. It can localize harmonic source and calculate total harmonic current.
