Small signal modelling of HVDC transmission systems

Author

Wood, A.R. ; Osauskas, C.M. ; Hume, D.J.

Author_Institution

Canterbury Univ., Christchurch, New Zealand

fYear

2001

fDate

28-30 Nov. 2001

Firstpage

107

Lastpage

112

Abstract

An exact small signal linear model of the HVDC converter has been published, and this paper describes two applications of the model. The first application is the calculation of steady state harmonic levels in the presence of unbalanced AC systems. The method presented is general, and can be applied to asynchronous links of different operating frequencies, with different sources of waveform distortion. The second application is the calculation of the dynamics of HVDC systems, particularly within the frequency range from 2 to 200 Hz. All interactions relevant to the dynamics and control of HVdc systems are accurately represented in the s-domain. Both applications are in excellent agreement with time domain simulations using PSCAD/EMTDC.

Keywords

HVDC power convertors; HVDC power transmission; power system harmonics; power transmission control; time-domain analysis; 2 to 200 Hz; HVDC Graetz bridge model; HVDC converter; HVDC transmission systems; PSCAD/EMTDC; asynchronous links; dynamics; operating frequencies; s-domain; small signal linear model; steady state harmonic levels; unbalanced AC systems; waveform distortion;

fLanguage

English

Publisher

iet

Conference_Titel

AC-DC Power Transmission, 2001. Seventh International Conference on (Conf. Publ. No. 485)

ISSN

0537-9989

Print_ISBN

0-85296-745-4

Type

conf

DOI

10.1049/cp:20010527

Filename

988394