The harmonic impedances and voltage source transients model of 12 pulse AC-DC converters for harmonic flow analysis using discrete wavelet transform

Author

Jaipradidtham, Chamni ; Inban, Prayuth

Author_Institution

Dept. of Electr. Eng., Kasem Bundit Univ., Bangkok, Thailand

fYear

2009

fDate

23-26 Jan. 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents of harmonics flow analysis with the 12-pulse converters of HVDC link which are harmonic voltage source converter (VSC) in the AC-DC systems. A new fast numerical technique is used with the harmonic domain algorithm to calculate the harmonic impedances of AC-DC converters. The VSC-based HVDC can be used to control terminal bus voltage and balance power exchange among the VSC converters. The presents of harmonic current equations network elements in the harmonic impedances model are calculated by a predetermined equation. The effect of imperfect frequency response of the filters in discrete wavelet transform (DWT) filter banks, and a DWT based algorithm for harmonic analysis of nonstationary power system waveforms. The system case study is the 14 buses system. The results for this condition have show low distortion of voltage and power at all buses these are caused by characteristics of harmonic currents from HVDC converters.

Keywords

AC-DC power convertors; HVDC power convertors; discrete wavelet transforms; frequency response; power harmonic filters; DWT filter banks; VSC-based HVDC converters; discrete wavelet transform; frequency response; harmonic domain algorithm; harmonic flow analysis; harmonic impedances; harmonic voltage source converter; nonstationary power system waveforms; power exchange balance; pulse AC-DC converters; terminal bus voltage control; voltage source transients model; AC-DC power converters; Discrete wavelet transforms; HVDC transmission; Harmonic analysis; Impedance; Power harmonic filters; Power system harmonics; Transient analysis; Voltage; Wavelet analysis; HVDC system; discrete wavelet transform; harmonic flow; impedances; voltage source converter;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2009 - 2009 IEEE Region 10 Conference

Conference_Location

Singapore

Print_ISBN

978-1-4244-4546-2

Electronic_ISBN

978-1-4244-4547-9

Type

conf

DOI

10.1109/TENCON.2009.5395799

Filename

5395799