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Study of protection strategy for VSC based HVDC system

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3 Author(s)
Hongtao Liu ; Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Zheng Xu ; Ying Huang

This paper studies the operation performance of a voltage source converter (VSC) based HVDC (VSC-HVDC system) system under some characteristic faulted conditions with and without protection measures. A protection strategy is proposed to enhance the continuous operation performance of the VSC-HVDC system. The strategy utilize a newly developed over-current limitation controller to suppress the VSC over- currents and use a voltage chopper to suppress over-voltages on the DC side of the VSC. Digital simulation is done to verify the validity of the proposed protection strategy.

Published in:

Transmission and Distribution Conference and Exposition, 2003 IEEE PES  (Volume:1 )

Date of Conference:

7-12 Sept. 2003