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Short-circuit current estimation from measurements of voltage and current during disturbances

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3 Author(s)
Srinivasan, K. ; IREQ, Varennes, Que., Canada ; Lafond, C. ; Jutras, R.

Short-circuit current is usually calculated theoretically, using power network parameters and configuration. This paper describes a method for estimating the short-circuit current using measurements taken at the distribution feeders. The method makes use of small, as well as large, disturbances. As an example, the paper includes a statistical analysis of the short-circuit current estimates from disturbance measurements in a 20-h period near a sawmill. The short-circuit current value plays an important role in the evaluation of the severity of power quality degradation at the distribution voltage levels

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Industry Applications, IEEE Transactions on  (Volume:33 ,  Issue: 4 )