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Along with the rapid development of the power industry, distribution networks get more sophisticated. Traditional fault location methods have obvious drawbacks. In this paper, an accurate and efficient method based on multi- source information from protective equipment and FTUs (Feeder Terminal Unit) as well as voltage sag profiles from monitored node is proposed for fault location in distribution...
Voltage sags are short duration reductions in rms voltage caused by short circuits, overloads and starting of large motors. Voltage sag is much more of a global problem. For proper analysis and mitigation of voltage sag, their characterization is important. The magnitude and durations are main characteristics of voltage sag. In this paper voltage sag and their characteristics have been presented in...
This paper discusses methods for voltage sag source detection, which are based either on energy, current or impedance criteria. It is shown that methods known from the literature do not work well, particulary in cases of asymmetrical voltage sags. Therefore generalized methods for voltage sag source detection are proposed, using a vector space approach. All the discussed methods, both the already...
Different methods for voltage sag source detection are discussed. They are based either on disturbance energy, voltage-current characteristic or active (real) current component. It is shown that, in the cases of asymmetrical voltage sags, both current-based methods known from literature do not work well. These two methods are therefore generalised using a vector-space approach. Furthermore, three...
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