A New Method of Early Short Circuit Detection


To reduce the pressure on contacts and circuit breaker and realize the zone selective interlocking (ZSI) function above the instantaneous protection threshold (e.g., >10In), the short circuit current needs to be early detected. The state-of–art of early short circuit detection (ESCD) method is reviewed. Based on the equivalent model of the short circuit, a new method based on the current and its integration is proposed. The prospective current value can be detected in the early stage of the short circuit. According to the evaluation result, the short circuit current can be early forecasted with the proposed method.

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Du, F. , Chen, W. , Zhuo, Y. and Anheuser, M. (2014) A New Method of Early Short Circuit Detection. Journal of Power and Energy Engineering, 2, 432-427. doi: 10.4236/jpee.2014.24058.

Conflicts of Interest

The authors declare no conflicts of interest.


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