Comprehensive transient analysis on control system in a photovoltaic power plant under lightning strike

Demirel, Emre; Dolgun, Gülşah Karaca; Keçebaş, Ali

doi:10.1016/j.solener.2022.01.037

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…Most of the studies about LS effects in the literature encompassed direct LS on small-size PV arrays [3,6,[14][15][16][17][18][19][20][21]; some of them were devoted to medium or large-size PV arrays [22][23][24], but only few analysed lightning-induced overvoltage transients at the AC or DC side of grid-connected PV systems [4,[25][26][27][28][29][30][31][32][33][34][35]. Using different electromagnetic (EM) analysis for the DC side [36], these works assessed the lightning-induced voltages in the loops formed by the internal circuit of the PV module or the wiring of the PV array.…”

Section: Introductionmentioning

confidence: 99%

A study on the effects of electromagnetic coupling mechanisms in the event of an indirect lightning strike near photovoltaic arrays

Hernández

Sutil

Petrarca

et al. 2023

IET Renewable Power Gen

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Indirect lightning strikes hitting near photovoltaic installations are much more frequent than direct hits, and can generate overvoltage in their electric circuitry. The authors developed a method to estimate the induced overvoltage on single photovoltaic modules. Using a model of the whole array also including Inter‐Module Coupling Mechanisms (IMCMs), a new approach to estimate overvoltage induced on full arrays is presented in this paper. The procedure first estimates lumped parameters, modelling either the coupling between the lightning channel and each module in the array or between each couple of modules in array. Several circuital simulations are then run using suitable equivalent circuits. The aim is to consider different array configurations and groundings schemes. This allows extracting the most relevant configuration parameters influencing overvoltage/overcurrent. Results show that the groundings scheme impacts negligibly, but the single module electric stress is decreased by 35% in the case of ungrounded configurations. Among the considered array configurations, the honey‐comb and total cross‐tied showed the smallest impact on overvoltage. Statistical analysis on random LC tortuous geometry leads to a non‐negligible rise of overvoltage peak values, up to 24%. Finally, the relevance of different IMCMs is analysed, showing a strong impact just on frame‐ground voltages and currents.

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