Power flow analysis in multi-terminal HVDC grid

Author

Veilleux, Etienne ; Ooi, Boon-Teck

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada

fYear

2011

fDate

20-23 March 2011

Firstpage

1

Lastpage

7

Abstract

Recent interests in developing a new type of grid have suggested the idea of the dc grid. However, the dc grid has less degrees of freedom than an ac grid which restricts its power flow control ability. To overcome this situation, an auxiliary dc voltage controller that would vary the voltage on a dc line can be inserted to provide additional degrees of control freedom. This paper investigates the benefits of adding such controller on a dc grid. The region of operation for a system with and without the auxiliary dc voltage controller is calculated. Two configurations are studied: a 3 terminals system with 3 lines and a 4 terminals system with 5 lines. The analysis confirms the enlargement of the region of operation for both systems and high sensitivity to voltage variations caused by the controller is explored.

Keywords

HVDC power transmission; load flow control; power grids; power transmission control; AC grid; DC line; DC voltage controller; multiterminal HVDC grid; power flow analysis; power flow control; Equations; Power transmission lines; Propagation losses; Regulators; Sensitivity; Voltage control; Wind farms; DC grid; multi-terminal HVDC; power flow analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Conference and Exposition (PSCE), 2011 IEEE/PES

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-61284-789-4

Electronic_ISBN

978-1-61284-787-0

Type

conf

DOI

10.1109/PSCE.2011.5772476

Filename

5772476