Enhanced stability of EHV power networks with HVDC connections

Author

Vogt, Steffen ; Stachel, Philipp ; Schegner, Peter

Author_Institution

Inst. of Electr. Power Syst. & High Voltage Eng., Tech. Univ. Dresden, Dresden, Germany

fYear

2009

Firstpage

1

Lastpage

6

Abstract

This paper deals with the topic of power system stability in the case of expanding a conventional three-phase AC grid with HVDC connections. With respect to the requirements of modelling power system elements for stability studies a simulation model is built. A fast method for evaluating the power system stability based on modal analysis is proposed. Different scenarios of expanding or replacing overhead power lines of the original grid with HVDC connections are compared and evaluated. Three-phase faults at all buses and lines are simulated with different fault clearing times. In most cases a positive influence of the HVDC connections on the rotor angle stability is presented.

Keywords

HVDC power transmission; modal analysis; power overhead lines; power system stability; EHV power network; HVDC connections; modal analysis; overhead power lines; power system stability; rotor angle stability; three-phase AC grid; three-phase faults; HVDC transmission; Power grids; Power system analysis computing; Power system dynamics; Power system modeling; Power system simulation; Power system stability; Power systems; System testing; Voltage; HVDC transmission system; modal analysis; power system modelling; stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech, 2009 IEEE Bucharest

Conference_Location

Bucharest

Print_ISBN

978-1-4244-2234-0

Electronic_ISBN

978-1-4244-2235-7

Type

conf

DOI

10.1109/PTC.2009.5281786

Filename

5281786