Fast Fault Detection for Power Distribution Systems

M. Öhrström and L. Söder (Sweden)


Fast fault detection, industrial system, current limiting


This paper discusses aspects of fault detection for power systems which require fault removal before the first peak current after the initiation of a short circuit fault. Firstly, speed of fault detection is discussed and in particular how “fast” fault detection should be interpreted in this paper. Secondly, apparatus that would benefit from fast fault de tection is described and in what kind of power systems it could be used. Finally, algorithms appropriate for use in fast fault detection are discussed and analysed in a case study with respect to fault current levels, and requirements for fault detection equipment including detection time and sampling rate.

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