Analysis and Detection of Faults at Insulated Conductors of Overhead Medium Voltage Lines
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The paper dealt with the issue of breakdowns detection of isolated hanging wires on the medium-voltage transmission. The main aim of article is to describe the function of created breakdowns detector and evaluation its. The breakdowns detector is created based in indicators of faults such as touch between tree limbs and insulated wire, touch tree limbs with several phases or fall insulated wire on the ground. Breakdowns detector has been created because today digital protection was not able to detect the aforementioned faults (e.g. a fault between ground and insulated wire is not a complete ground fault).Therefore, the measured data in the fault-free situation will be compared with the simulated measured faults data in the 22 kV insulated wire type of SAX-W.
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