Open AccessResearch on the Calculation Method of Harmonic Contribution in the Case of Dominant System-side Harmonics
Author(s) -
Zhaoguang Yang,
Longya Xu,
Jingyu Yang,
Haiping Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2095/1/012006
Subject(s) - harmonics , harmonic , electrical impedance , equivalence (formal languages) , harmonic analysis , voltage source , control theory (sociology) , computer science , mathematics , voltage , electronic engineering , engineering , physics , acoustics , electrical engineering , control (management) , discrete mathematics , artificial intelligence
Existing methods for quantifying the responsibility of harmonic sources assume a dominant user side and use a harmonic source equivalence circuit to calculate the equivalent system impedance and background harmonic voltage, which in turn assesses the harmonic contribution of that source to the bus of concern. For users who actively participate in harmonic governance, it is very important to evaluate the responsibility of injecting harmonics into users. This paper assumes system-side is dominant, constructs a partial linear regression model and a constant impedance model, and tracks the regression error. The equivalent fundamental impedance is doubly screened to calculate the harmonic impedance for the corresponding number of times, which in turn quantifies the harmonic voltage duty. The results of simulation and the analysis of measured data show that this method has simple calculation model, small regression error (0.0037), high accuracy and practical engineering significance.