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According to the requirement for a protection scheme based on synchronized phasor measurement in distribution networks with distributed generations, a RPR-based PPS distribution scheme was proposed. In this scheme, reserved control code group K28.6 in Ethernet physical coding layer is used as PPS positive edge transferred with preemptive priority in both ringlets of RPR. And a compensation algorithm...
This paper carries on the deep research to the influence of distributed generation (DG) introduction in distribution system to over-current protection sensitivity, and proposes the protection revision method. In this paper, it presented the unit-current method to analyze influence characteristic on current protection with DG. It is proved both in theory and by simulation: (1) the single DG influence...
This paper proposes a novel fault location algorithm of distribution automation master system for urban distribution system with distributed generation (DG). A differential current ratio (DCR) is constructed in the paper which contains the differential current information to describe the feature of faulted segment and differential current information of normal one. The faulted segment would have a...
Conventional power distribution system is radial in nature, characterized by a single source feeding a network of downstream feeders. The distribution automation fault location, primarily considering the fault current amplitude signals, has traditionally been designed assuming the system to be radial. However, the system with distributed generation (DG) may no longer radial, which means more fault...
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