System Maintenance:
There may be intermittent impact on performance while updates are in progress. We apologize for the inconvenience.
By Topic

Study on Electrical Transient Protection for ±800kV UHVDC Transmission Lines

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Kezhen Liu ; Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China ; Jilai Yu ; Hongchun Shu ; Zhiyu Chen

The physical boundary of a high voltage direct current (HVDC) transmission line consists of smoothing reactor and DC filter. It has the stop-band characteristic to the high-frequency transient voltage components. The high-frequency voltage signal from the external of DC transmission lines will be weakened when it travels through the smoothing reactor and DC filter. Its power will also be much smaller. The wavelet energy of the high-frequency transient voltage can be gotten through wavelet transformation. The identification criterion of internal and external fault is based on the conspicuous difference of the wavelet energy of high-frequency transient voltage at the point of relay installation. The wavelet transformation modulus maximum of the fault transient voltage is used as the criterion of starting. The fault line is selected based on the polarity wave of the two lines. The simulation is performed considering commutation failure, and the fault distance to the single-ended electrical transient protection. The simulation results show that the protection has absolute selectivity, which can steadily and effectively protect the whole lines.

Published in:

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Date of Conference:

27-29 March 2012