A Commentary on Voltage Stability of Multi-Infeed AC/DC System with VSC-HDVC

Author

Wei, Yanfang ; Wei, Zhinong ; Sun, Guoqiang

Author_Institution

Coll. of Energy & Electr. Eng., Hohai Univ., Nanjing, China

fYear

2011

fDate

25-28 March 2011

Firstpage

1

Lastpage

4

Abstract

Multi-Infeed Direct Current (MIDC) system has become a development trend of the power grid. The complexity interactions between AC/DC system, and among DC subsystems have brought new challenges to voltage stability of the system. Aim at the stability problem of MIDC systems, voltage source converter based HVDC (VSC-HVDC) is applied to MIDC systems for improving the voltage characteristic of common AC bus in MIDC systems. For its flexible control performance and reactive power double-flow, VSC-HVDC system provides favorable conditions to improve the voltage stability of multi-infeed AC/DC power. Based on the strongly nonlinear and coupled characteristics of MIDC systems, this paper gives a commentary on voltage stability of multi-infeed AC/DC power system with VSC-HDVC. Finally, the problems to be solved in the research on voltage stability of multi-infeed AC/DC power transmission system and the future research direction in this field are also discussed. It should be the subjects investigated in future to apply the VSC-HVDC to MIDC systems for improving the voltage stability of MIDC AC/DC systems.

Keywords

AC-DC power convertors; HVDC power convertors; power grids; power system stability; AC bus; DC subsystems; multi-infeed AC-DC system; power grids; reactive power double-flow; voltage source converter based HVDC; voltage stability; HVDC transmission; Power conversion; Power system stability; Stability criteria; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific

Conference_Location

Wuhan

ISSN

2157-4839

Print_ISBN

978-1-4244-6253-7

Type

conf

DOI

10.1109/APPEEC.2011.5748515

Filename

5748515