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The application of IEEE1588 in time synchronizing system of smart distribution grid is researched in this paper. Topologic structure of communication system of distribution grid is analysed in the second instance. Redundancy configuration and auto-select technique of precise clock source are brought forward afterwards. Thirdly, clock mode selection scheme of backbone layer, access layer and distribution...
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 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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