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The study of power system performances in the fast short circuit current limiter embedded network

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3 Author(s)
Mingjie Sun ; STATE GRID Corp. of China, Xiamen Electr. Power Bur., Xiamen, China ; Yufeng Lin ; Yiyun Guo

The smart distribution system is an important aspects of the smart grid framework. There will be systematic update on the infrastructure of distribution side. In smart distribution grid pilot cities of China, a large number of ring main units are installed to improve the system reliability and there will be higher DG penetration rate to realize emission control. Therefore, the short circuit currents on the distribution side in the smart grid framework will be higher than that in the conventional distribution system. To meet this challenge, the fast short circuit current limiter (Is-limiter) is proposed to reduce the short circuit current level. The first 10kV Is-limiter has been installed in Xiamen. The aim of this paper is to study the impact of the Is-limiter on the distribution system in terms of short circuit current level, voltage quality and DG dynamic performances. In this paper, formula to describe the short circuit current level and the voltage sag level in the Is-limiter embedded network are deduced and the DG dynamic performances during fault are studied by time domain simulation. It is expected that the research in this paper can provide references for employing Is-limiter.

Published in:

Environment and Electrical Engineering (EEEIC), 2011 10th International Conference on

Date of Conference:

8-11 May 2011