Accelerated model of Modular Multilevel Converters in PSCAD/EMTDC

Author

Jianzhong Xu ; Chengyong Zhao ; Wenjing Liu ; Chunyi Guo

Author_Institution

Electr. & Electron. Eng. Sch., North China Electr. Power Univ., Baoding, China

fYear

2013

fDate

21-25 July 2013

Firstpage

1

Lastpage

1

Abstract

Modular Multilevel Converters (MMC) is an effective option for continuously growing demands of Voltage Sourced Converter based High Voltage Direct Current (VSC-HVDC) transmission. However, accurate modeling of MMC with high level in PSCAD/EMTDC is extremely time-consuming and hardware-requiring. Based on the Kirchhoff´s Law, an equivalent accelerated model for MMC is proposed. The essence of the new model is partition of one large-scale admittance matrix into substantial small-scale matrices, which is mathematically demonstrated with Nodal Analysis Method. Finally, the detailed electromagnetic transient simulations are implemented for comparisons of steady state and transient performances, and the results validate the proposed model.

Keywords

CAD; HVDC power convertors; HVDC power transmission; electric admittance; power engineering computing; Kirchhoff law; MMC; PSCAD-EMTDC; VSC-HVDC transmission; accelerated model; electromagnetic transient simulations; equivalent accelerated model; large-scale admittance matrix; modular multilevel converters; nodal analysis method; steady state performances; transient performances; voltage sourced converter based high voltage direct current; Acceleration; EMTDC; Educational institutions; Mathematical model; PSCAD; Power conversion; Accelerated model; High Voltage Direct Current (HVDC); Modular multilevel converter (MMC); Nodal Analysis Method; PSCAD/EMTDC; Voltage source converter (VSC);

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting (PES), 2013 IEEE

Conference_Location

Vancouver, BC

ISSN

1944-9925

Type

conf

DOI

10.1109/PESMG.2013.6672313

Filename

6672313