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The influence of fault distribution on stochastic prediction of voltage sags

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3 Author(s)
Milanovic, J.V. ; Sch. of Electr. & Electron. Eng., Univ. of Manchester, UK ; Myo Thu Aung ; Gupta, C.P.

This paper analyzes the influence of modeling of fault distribution along transmission line on the assessment of number and characteristics of voltage sags. The generic distribution network was used in all simulations. Different types of transformer winding connections were modeled and different (symmetrical and asymmetrical) types of faults were simulated. A line was selected from the previously identified area of vulnerability for a given bus and different faults having different distributions along the line were simulated. It was shown that depending on the fault distribution (uniform, normal, exponential) along the line, different numbers and characteristics of voltage sags could be expected at the selected bus.

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Power Delivery, IEEE Transactions on  (Volume:20 ,  Issue: 1 )