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A Transient Protection Scheme for HVDC Transmission Line

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4 Author(s)
Xiaodong Zheng ; Dept. of Electr. Power Eng., Shanghai Jiao Tong Univ., Shanghai, China ; Tai Nengling ; Yang Guangliang ; Ding Haoyin

The relation between the parameters of dc transmission line and the variation of transient energy has been analyzed under various fault conditions in this paper. According to that, a new transient energy protective scheme is proposed. It is developed based on the distributed parameter line model in which the transient energy distribution over the line can be obtained from the voltage and current measurements at both terminals and the fault can be recognized from the calculated value simply. The test system is modeled based on the CIGRE benchmark and considered the distributed parameters of the dc transmission line. Comprehensive test studies show that the performance of transient energy protection scheme is encouraging. It can not only identify internal fault and external faults correctly and quickly, but can also respond to the high ground resistance fault. Finally, two main factors, including fault resistance and transmission distance, that affect the performance of the protection are also discussed.

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Power Delivery, IEEE Transactions on  (Volume:27 ,  Issue: 2 )