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| Protection Improved Method of Distribution Network System with DG |
| Lian Jie, Yang Bingyuan |
| Inner Mongolia University of Technology, Hohhot, 010080 |
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Abstract DG access to distribution network, change the size of the short circuit current and the direction, has changed the system structure of power grid. Correct action of Three-step current protection on the allocation of power distribution network will impact. This article is a kind of traditional three-step current protection change into two sections of current protection, and connecting with the system of communication protection method for distribution network protection configuration. It can avoid that the distributed power supply system may cause the access protection misoperation problem, at the same time, to allow distributed power island operation mode, when distribution network line fault occurs between access points, to achieve the fault from the ends of resection of requirements.
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Published: 10 October 2013
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2013, Vol. 14 
