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A new fault isolation and restoration technique for distribution automation, which employs local Ethernet network, is presented. It can isolate all short circuit faults in the loop within 300ms and restore the supply of healthy sections in less than 1.2 seconds. A reliable fault location method for isolating the single phase to ground fault in the non-effectively earthed network, which makes use of...
Conventional relaying algorithms are mostly based on phasor computation. Since it is difficult to obtain accurate phasor results in fast transient situations, most of the feeder relays fail to correctly respond to transient/intermittent earth faults, which are, however, frequent fault cases in distribution systems. This paper presents a novel approach for fault detection and direction determination...
In a neutral non-effectively grounded power system, the correct identification and isolation of the faulty feeder on the occurrence of a single-phase earth fault is always a difficult task. To improve the level of distribution automation, a novel method of negative-sequence current compensation based adaptive zero-sequence over-voltage protection is put forward in this paper. On the basis of the analysis...
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