A consideration of stable operating power limits in VSC-HVDC systems

Author

Konishi, H. ; Takahashi, C. ; Kishibe, H. ; Sato, H.

Author_Institution

Res. Lab., Hitachi Ltd., Japan

fYear

2001

fDate

28-30 Nov. 2001

Firstpage

102

Lastpage

106

Abstract

The stable operating-power limits of a small scale HVDC system composed of voltage source converters (VSC-HVDC system) are analyzed with a simple model. The VSC-HVDC system could operate where the AC system must be somewhat larger in capacity than the VSC-HVDC system capacity. The stable operating power limits were between one and two times the SCR (short circuit ratio). When the inverter of the VSC-HVDC system was operated with lead reactive (capacitive) power control conditions, the stable operating limits were increased through AC voltage stabilization. If there were loads near the inverter, the VSC-HVDC system could transmit a little bit larger power than those without loads.

Keywords

HVDC power convertors; invertors; power convertors; power system stability; power transmission control; reactive power control; AC system; AC voltage stabilization; STATCOM operation; VSC-HVDC systems; inverter; lead reactive power control conditions; short circuit ratio; stable operating power limits; voltage source converter; voltage source converters;

fLanguage

English

Publisher

iet

Conference_Titel

AC-DC Power Transmission, 2001. Seventh International Conference on (Conf. Publ. No. 485)

ISSN

0537-9989

Print_ISBN

0-85296-745-4

Type

conf

DOI

10.1049/cp:20010526

Filename

988393