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Harmonic analysis for industrial customers

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4 Author(s)
Yan, Y.H. ; Dept. of Electr. Eng., Nat. Yunlin Polytech. Inst., Taiwan ; Chen, C.S. ; Moo, C.S. ; Hsu, C.T.

A power flow program is developed to analyze the harmonic distortion of a power system with various types of harmonic loads. The proposed program can be applied to solve the harmonic current flow, voltage harmonic distortion factor, resonance frequency, and current amplification factor at every bus in the system. In this study, a large metal factory is selected for the harmonic power flow analysis. The current waveforms at every bus are measured and analyzed to determine various orders of harmonic components. These harmonic currents are used in the computer simulation to determine the harmonic voltage distortion factor at the buses of the system, and the variations of resonance impedance and amplification factor with frequencies are investigated. Finally, the program is used to calculate the harmonic load flow when the metal factory is expanded by including a new plant in the power system, and proper filters are designed to alleviate the harmonic problems

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Industry Applications, IEEE Transactions on  (Volume:30 ,  Issue: 2 )