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HVDC control strategies to improve transient stability in interconnected power systems

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3 Author(s)
Hazra, J. ; Dept. of Power & Energy Syst., SUPELEC, Gif-sur-Yvette, France ; Phulpin, Y. ; Ernst, D.

This paper presents three HVDC modulation strategies to improve transient stability in an interconnected power system. AC variables such as rotor speeds, voltage phasors, and tie-line power flows are used as input to the controller that modifies the power flow settings through the HVDC-links. The proposed techniques are tested on the IEEE 24-bus reliability test system and critical clearing times obtained for several contingencies are analyzed. The paper shows that HVDC modulation can lead to substantial improvement in transient stability.

Published in:

PowerTech, 2009 IEEE Bucharest

Date of Conference:

June 28 2009-July 2 2009