Study on power control function for double-circuit-on-the-same-tower HVDC transmission systems

Author

Juanjuan Wang ; Zeyong Liang ; Xiaocong Xuan ; Jinghua Luo ; Leilei Xiao

Author_Institution

Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China

fYear

2014

Firstpage

1

Lastpage

5

Abstract

Xiluodu ±500 kV HVDC Double-circuit-on-the-same-tower Transmission Project is the first HVDC transmission project with two HVDC circuits sharing the same converter stations in the world. This project is different from others in that the double circuits may operate independently in single-circuit mode or coordinately in double-circuit mode. This paper analyzes the hierarchical structure of the control systems for this kind of HVDC transmission systems, and studies in depth the double-circuit power control functions according to the unique characteristics of the double-circuit control hierarchies. A simulation model is built in PSCAD / EMTDC for a simulative analysis of three typical operation control modes. The simulation results verify the feasibility of coordinated controls for double-circuit-on-the-same-tower HVDC transmission systems and have a certain guiding significance for actual project operation.

Keywords

HVDC power convertors; HVDC power transmission; hierarchical systems; power control; power transmission control; HVDC circuits; HVDC double-circuit-on-the-same-tower transmission project; PSCAD-EMTDC; control systems; converter stations; coordinated controls; double-circuit control hierarchies; double-circuit mode; double-circuit power control functions; hierarchical structure; single-circuit mode; Control systems; Current control; HVDC transmission; Integrated circuit modeling; Power control; Resource management; Transient analysis; coordinated operation; double-circuit HVDC transmission system on the same tower; double-circuit power control; hierarchical control structure;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2014 IEEE PES Asia-Pacific

Type

conf

DOI

10.1109/APPEEC.2014.7065983

Filename

7065983