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By analyzing the characteristics of the lightning current and traditional distribution transformer model, a transient distribution transformer model under the lightning stroke is established. Through the calculation of the traditional distribution transformer model parameters and the study of energy equivalence principled, this paper puts forward a method to calculate the resistance, inductance and...
Currently, few researches related to lightning protection of distribution transformer with zinc oxide arrester are reported on both home and abroad. This paper establishes a model of zinc oxide arrester and distribution transformer under lightning stroke. In order to verify the lightning protection of zinc oxide arrester to distribution transformer, two distribution network simulations are carried...
This paper theoretically analyzes the frequency spectrum characteristics of the single-phase ground fault in a Petersen-coil grounded distribution network. Different equivalent circuits are analyzed for faults with low transition resistances and with high transition resistances, separately. The analysis concludes that the system makes a transition from an under-damped state to a damping state, and...
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