Precise control of power flow in multiterminal VSC-HVDCs using DC voltage droop control

Author

Haileselassie, T.M. ; Uhlen, K.

Author_Institution

Dept. of Electr. Power Eng., Norwegian Univ. of Sci. & Technol., Trondheim, Norway

fYear

2012

fDate

22-26 July 2012

Firstpage

1

Lastpage

9

Abstract

DC line voltage drops as well as converter power losses have significant impacts on precise control of power flow in multiterminal VSC-HVDCs using DC voltage droop. When DC voltage droop controls are used in multiterminal VSC-HVDC, due to unequal DC bus voltages the DC line voltage drops causes large amount of power flow deviations in the DC network. DC line power losses and converter power losses also cause DC grid power flow deviations. To achieve precise control of power flow in the DC network, it is necessary that the power deviations occurring due to each of these factors be eliminated. With simulation of a five terminal VSC-HVDC system in PSCAD/EMTDC it is demonstrated how to achieve precise control of power flow in multiterminal VSC-HVDC by accounting for each of these three factors.

Keywords

HVDC power convertors; HVDC power transmission; load flow control; power transmission control; voltage control; DC grid power flow deviations; DC line power losses; DC line voltage drops; DC network; DC voltage droop control; PSCAD-EMTDC; converter power losses; multiterminal VSC-HVDC system; power flow control; precise control; voltage source converter; HVDC transmission; Load flow; Power conversion; Power measurement; Voltage control; Voltage measurement; Power flow control; VSC-HVDC; multiterminal HVDC;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting, 2012 IEEE

Conference_Location

San Diego, CA

ISSN

1944-9925

Print_ISBN

978-1-4673-2727-5

Electronic_ISBN

1944-9925

Type

conf

DOI

10.1109/PESGM.2012.6343950

Filename

6343950