Research on the Calculation Method of Harmonic Contribution in the Case of Dominant System-side Harmonics

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.

The Effect of Photoconductive Mole Fraction Based on Thin Film BaxSr1-xTiO3 (x = 0.000; 0.125; 0.250; 0.375; 0.500) on Electrical Properties and Diffusivity Coefficient

Barium Strontium Titanate (BaxSr1-xTiO3) thin films have been fabricated for mole fraction (x= 0.000; 0.125; 0.250; 0.375; 0.500) on p-type silicon (100) substrate using Chemical Solution Deposition (CSD) method and spin coating technique. The film annealed at 850 ∘C for 8 hours with an increasing rate of 1.67 ∘C/minute. The BST thin film was characterized using an LCR meter that the film is given a different light intensity (0 lux, 4000 lux, 8000 lux). Data obtained from the LCR meter is conductance, capacitance, and impedance. Different mole fractions on Barium produce different electrical properties that show the value of electric conductivity, dielectric constant, impedance, and diffusion coefficient.