HVDC converter modeling and harmonic calculation under asymmetric faults in the AC system

Author

Gang, Wang ; Zhikeng, Li ; Haifeng, Li ; Xiaolin, Li ; Chuang, Fu

Author_Institution

Dept. of Electr. Eng., SCUT, Guangzhou, China

fYear

2009

Firstpage

1

Lastpage

6

Abstract

After a detailed analysis of the dynamic processes in the HVDC converter when asymmetric faults occur in the ac system, a sequence-component model of converter based on the advanced switching functions is present. Furthermore, a linear direct method of harmonic calculation is proposed. In this method, both the effect of the harmonic interaction between the ac and dc system and the dynamic processes in the converter are considered. It is demonstrated that quantitative analysis basis for harmonic suppression, filter configuration and setting calculation of relaying can be provided by this method which is verified by comparison with the results obtained by dynamic simulation.

Keywords

HVDC power convertors; power system faults; power system harmonics; AC system; HVDC converter; asymmetric faults; dynamic simulation; filter configuration; harmonic interaction; harmonic suppression; quantitative analysis; sequence component model; switching functions; Analog-digital conversion; HVDC transmission; Harmonic analysis; Harmonics suppression; Power harmonic filters; Power system harmonics; Power system modeling; Power system relaying; Switching converters; Valves; HVDC system; asymmetric faults; converter modeling; harmonic calculation; switching function;

fLanguage

English

Publisher

ieee

Conference_Titel

Power & Energy Society General Meeting, 2009. PES '09. IEEE

Conference_Location

Calgary, AB

ISSN

1944-9925

Print_ISBN

978-1-4244-4241-6

Type

conf

DOI

10.1109/PES.2009.5275286

Filename

5275286