Different corona models are investigated with reference to the propagation along lossy overhead multiconductor transmission lines of overvoltages due to direct lightning strokes. A nonlinear dynamic capacitance is introduced to simulate the nonlinear behavior of the q-v hysteretic loop and account for the losses associated with its area. For comparison, an equivalent circuit has been introduced to simulate the corona phenomenon through a voltage-dependent current-generator and a nonlinear conductance in parallel. In this paper we compare the predictions of different models in comparison with measured data available in literature. Then, a model based on a nonlinear dynamic capacitance is implemented in an efficient Finite Difference Time Domain (FDTD) method where also the losses in the ground return path are simulated by means of the expression ensuring from Carson theory transferred in the time-domain.
Comparison of corona models for computing the surge propagation in multiconductor power lines / Araneo, Rodolfo; Maccioni, Marco; Lauria, Stefano; Geri, Alberto; Gatta, Fabio Massimo; Celozzi, Salvatore. - ELETTRONICO. - (2016), pp. 1-6. (Intervento presentato al convegno 16th International Conference on Environment and Electrical Engineering, EEEIC 2016 tenutosi a ita nel 2016) [10.1109/EEEIC.2016.7555805].
Comparison of corona models for computing the surge propagation in multiconductor power lines
ARANEO, Rodolfo;MACCIONI, Marco;LAURIA, Stefano;GERI, Alberto;GATTA, Fabio Massimo;CELOZZI, Salvatore
2016
Abstract
Different corona models are investigated with reference to the propagation along lossy overhead multiconductor transmission lines of overvoltages due to direct lightning strokes. A nonlinear dynamic capacitance is introduced to simulate the nonlinear behavior of the q-v hysteretic loop and account for the losses associated with its area. For comparison, an equivalent circuit has been introduced to simulate the corona phenomenon through a voltage-dependent current-generator and a nonlinear conductance in parallel. In this paper we compare the predictions of different models in comparison with measured data available in literature. Then, a model based on a nonlinear dynamic capacitance is implemented in an efficient Finite Difference Time Domain (FDTD) method where also the losses in the ground return path are simulated by means of the expression ensuring from Carson theory transferred in the time-domain.File | Dimensione | Formato | |
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