Voltage source converter model for simulations of dynamic stability in meshed AC/DC systems

Author

Bassini, M.T. ; Horita, M.A.B. ; Jardini, J.A.

Author_Institution

Dept. of Energy & Autom., Univ. of Sao Paulo, Sao Paulo, Brazil

fYear

2014

fDate

10-13 Sept. 2014

Firstpage

1

Lastpage

6

Abstract

This paper presents the modeling of a voltage source converter (VSC) based on a phasor strategy suitable for implementation on stability softwares. This phasor is compared with a three-phase model for a point-to-point VSC transmission and then it is used in a dynamic stability study of a meshed VSC-HVDC grid connected to an AC system. The HVDC system evaluated comprises 14 DC terminals operating at ±400 kV or at ±200 kV, interconnecting islanded wind farms with hydroelectric based AC networks. The objective of the work is to evaluate the dynamic behavior of the asynchronous connections as well as the power interchange between the networks and its influence on its electromechanical stability. The effects of fault occurrences, line and converter contingencies are then analyzed.

Keywords

AC-DC power convertors; HVDC power transmission; power system stability; HVDC system; asynchronous connections; dynamic stability simulations; electromechanical stability; meshed AC/DC systems; meshed VSC-HVDC grid; phasor strategy; point-to-point VSC transmission; power interchange; stability softwares; voltage source converter model; Mathematical model; Power conversion; Power system stability; Reactive power; Stability analysis; Voltage control; AC/DC grid; HVDC; Voltage source converter; power system stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission & Distribution Conference and Exposition - Latin America (PES T&D-LA), 2014 IEEE PES

Conference_Location

Medellin

Print_ISBN

978-1-4799-6250-1

Type

conf

DOI

10.1109/TDC-LA.2014.6955178

Filename

6955178