By Topic

Efforts on Improving the Performance of Superimposed-Based Distance Protection

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)
Zhengtian Li ; State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol. (HUST), Wuhan, China ; Xiangning Lin ; Hanli Weng ; Zhiqian Bo

Existing superimposed-based distance protection possibly maloperates due to some extreme conditions, for instance, an external earth fault occurring while the transmission system operates at a large phase difference between the sources at two sides of the protected line. To solve this problem, an adaptive distance relay using the superimposed component and the information of the opposite end is put forward. The shortages of the existing schemes are first investigated, and the scenarios leading to the maloperations of those schemes in theory are clarified. Furthermore, corresponding countermeasures by means of the floating threshold and criterion switching are introduced. In this case, the reliability and the sensitivity of the superimposed-based distance protection are improved. By means of a variety of comprehensive tests, the feasibility of the proposed scheme is verified.

Published in:

Power Delivery, IEEE Transactions on  (Volume:27 ,  Issue: 1 )