Research on Principle of Network-based Adaptive Current Protection in Distribution Network

摘要

In low-voltage power distribution networks,there are usually many multi-level short line branches,ring distribution networks and T-type connections.Considering these characteristics,this paper presents a new network-based adaptive current protection principle.It is the communication technology with adaptive current setting method.Comparing with the traditional three-sect current protection,which has the problem of bad selectivity and protection range affected by fault type,this principle can ensure the selectivity.