Small-signal dynamic modeling of HVDC systems

Author

Osauskas, Chris ; Wood, Alan

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Canterbury, Christchurch, New Zealand

Volume

18

Issue

1

fYear

2003

fDate

1/1/2003 12:00:00 AM

Firstpage

220

Lastpage

225

Abstract

This paper details the development of a linear continuous-time state model of the small-signal dynamics of a high-voltage direct current (HVDC) transmission system. The dynamics in the frequency range between 2 and 200 Hz on the DC side are of interest for the identification of possible stability problems and the design of the fastest level of converter controls. The state model is formed by representing the system as the collection of a number of interconnected subsystems. This approach is structured and flexible, and can be directly applied to other systems including FACTS. A small-signal state model of the CIGRE benchmark HVDC transmission system is formed, validated against PSCAD/EMTDC time-domain simulation, and used to determine the rectifier DC current control open-loop frequency response.

Keywords

AC-DC power convertors; HVDC power transmission; frequency response; power system analysis computing; power system stability; power transmission control; rectifying circuits; time-domain analysis; 2 to 200 Hz; CIGRE benchmark HVDC transmission system; FACTS; HVDC transmission systems; PSCAD/EMTDC time domain simulation; computer simulation; identification; linear continuous-time state model; open-loop frequency response; rectifier DC current control; small-signal dynamic modeling; stability problems; Current control; EMTDC; Flexible AC transmission systems; Frequency conversion; Frequency response; HVDC transmission; PSCAD; Rectifiers; Stability; Time domain analysis;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2002.803843

Filename

1159922