Voltage Stability Analysis at Converter Buses in Combined AC/DC Systems

Author

Liu, Tiegen ; Mei Zhang ; Li, Xin

Author_Institution

Sch. of Electr. Eng. & Inf., Sichuan Univ., Chengdu

fYear

2009

fDate

27-31 March 2009

Firstpage

1

Lastpage

4

Abstract

This paper presented a method of estimating voltage stability for an AC/DC system based on nonlinear programming analysis of voltage stability for an AC system, and built the AC /DC model. This method converts the calculation of point of collapse (PoC) of AC/DC systems to a problem of optimizing load, which is solved by Sequential Quadratic Programming method (SQP). The method can handle various inequality constraints with strong robustness and good convergence and consider the effects of different High Voltage Direct Current (HVDC) transmission control modes on voltage stability. Finally numerical examples proved the validity of the proposed model and algorithm.

Keywords

AC-DC power convertors; HVDC power convertors; nonlinear programming; power system control; power system stability; combined AC/DC systems; converter buses; high voltage direct current transmission control; nonlinear programming analysis; point of collapse; sequential quadratic programming method; voltage stability analysis; Analog-digital conversion; Control systems; HVDC transmission; Inverters; Optimization methods; Power system modeling; Power system stability; Rectifiers; Stability analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Conference_Location

Wuhan

Print_ISBN

978-1-4244-2486-3

Electronic_ISBN

978-1-4244-2487-0

Type

conf

DOI

10.1109/APPEEC.2009.4918961

Filename

4918961