Influence of corona on the voltages induced by nearby lightning on overhead distribution lines

Nucci, Carlo Alberto; Guerrieri, S.; Barros, Maria Teresa Correia de; Rachidi, Farhad

doi:10.1109/61.891513

Cited by 39 publications

(12 citation statements)

References 15 publications

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“…The result has been confirmed by Reference [13]. The implementation of corona discharge in the computation of lightning-induced voltages has been based on two different strategies: (i) The concept of dynamic capacitance has been proposed in Reference [12] that is, when the induced voltage overcomes a threshold, the corona discharge determines an increase of the per unit length capacitance involved in the Agrawal model [14]; consequently, the dynamic capacitance mimics the experimental q-v characteristic of the corona discharge [15]. (ii) In References [16,17] the 3D-FDTD code simulates the corona discharge giving different values to the conductivity of the cell where corona effect is located; the main difference with the previous approach is that here the q-v characteristic results as an output calculation from the numerical integrations, while in the previous one appears as an input of the problem.…”

Section: Introductionmentioning

confidence: 84%

“…The capacitance can be estimated from the q-v curve, which can be obtained by experimental tests or by models in literature. An example is proposed in Figure 9 of Reference [12].…”

Section: The Corona Effectmentioning

confidence: 99%

“…When one deals with direct events, the corona discharge affects the surge propagation more than the ground resistivity but reduces the voltages induced on the line [12]. On the other side, when one deals with indirect strokes, Reference [12], "computation results showed a significant increase in the amplitude of the induced voltages in presence of corona". The result has been confirmed by Reference [13].…”

Section: Introductionmentioning

confidence: 99%

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Corona Effect Influence on the Lightning Performance of Overhead Distribution Lines

Mestriner

Brignone

2020

Applied Sciences

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Overhead distribution lines can be seriously damaged from lightning events because both direct and indirect events can cause flashovers along the line. The lightning performance of such power lines is usually computed neglecting the effect of corona discharge along the conductors: in particular, the corona discharge determined by the indirect lightning event is taken into account only by few researchers because it can have meaningful impacts only in few cases. However, when we deal with overhead distribution lines with high Critical Flashover value (CFO) and small diameters, the corona discharge caused by indirect events has to be taken into account. This paper shows the effects of corona discharge in the lightning performance computation of overhead distribution lines. The analysis will involve different configurations in terms of line diameter and air conditions, focusing on the negative effect of corona discharge in the number of dangerous events that determine line flashovers.

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Section: Introductionmentioning

confidence: 84%

“…The capacitance can be estimated from the q-v curve, which can be obtained by experimental tests or by models in literature. An example is proposed in Figure 9 of Reference [12].…”

Section: The Corona Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Corona Effect Influence on the Lightning Performance of Overhead Distribution Lines

Mestriner

Brignone

2020

Applied Sciences

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“…Phương trình kết nối điện từ của Agrawal sẽ được viết lại cho trường hợp mặt đất tổn hao như sau - [7], [13]…”

Section: Trường Hợp 2: đấT Dẫn đIện Hữu Hạnunclassified

The RBF-FDTD method for modeling the lightning-induced voltages on overhead distribution lines

Huynh³

et al. 2016

Sci. Tech. Dev. J.

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This paper presents an application of the Radial Basis Function – Based Finite Difference Time Domain Method (RBF-FDTD) such as MQ (Multiquadrics), IMQ (Inverse Multiquadrics) and GA (Gaussian) is developed in [1] for modeling the lightning-induced voltages on overhead power lines in both cases of ideal ground and lossy ground. In addition, the influence of corona on the lightning-induced voltages has been considered as well. In order to increasing the accuracy of proposed method, the optimal algorithm of finding the shape parameter has been used. The accuracy, effectiveness and applicability of The MQ, IMQ and GA RBF-FDTD are evaluated through computing the lightning-induced voltages on 110kV overhead distribution lines. The solutions obtained by the RBF-FDTD are compared with those of the traditional FDTD based on the basic solution of the LIOV. The obtained results demonstrate that the RBF-FDTD is always more accurate than the traditional FDTD, in particular with the optimal shape parameter.

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“…The distributed conductance is a parameter usually neglected in fault location techniques and electromagnetic transient simulations, but it is relevant for extra high voltage TLs (MAMIS, 2003;NUCCI et al, 2000). For this analysis, the distributed conductance is set at = 1 [ S/km] regarding the proposed model.…”

Section: Variation Of Leakage Conductancementioning

confidence: 99%

Fault location in transmission lines using time-domain equations.

Pino¹

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Influence of corona on the voltages induced by nearby lightning on overhead distribution lines

Cited by 39 publications

References 15 publications

Corona Effect Influence on the Lightning Performance of Overhead Distribution Lines

Corona Effect Influence on the Lightning Performance of Overhead Distribution Lines

The RBF-FDTD method for modeling the lightning-induced voltages on overhead distribution lines

Fault location in transmission lines using time-domain equations.

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