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Modelling series capacitor reinsertion in AC studies

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2 Author(s)

Varistor fundamental frequency models are introduced for use in AC studies of series compensated systems. First, a numerically fast physical model is proposed to simulate metal oxide varistor (MOV) protected capacitors located far from the point of fault application. Second, an interactive model is developed for MOV-protected capacitor banks exhibiting a higher degree of sensitivity of the voltage, current, and varistor energy parameters, such as banks subject to close-in faults. Per-case CPU-time reductions of up to 1:300 within a 4% energy comparison agreement with the equivalent time-domain analysis are attained in a parametric application example where the modeling concerts introduced are incorporated in a regular AC studies program

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IEEE Transactions on Power Delivery  (Volume:4 ,  Issue: 2 )