Title :
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
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;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5281786
