A Stochastic Model for Evaluating the Lightning Performance of a −400 kV HVDC Overhead Line

Ioannidis, Alexios I.; Papadopoulos, Theofilos A.; Tsovilis, Thomas E.

doi:10.1109/temc.2021.3054307

Cited by 17 publications

(5 citation statements)

References 47 publications

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“…Moreover, it is more in agreement with the leader branching and tortuous characteristics often observed with lightning. And the stochastic model was used for analyzing the lightning attachment process in [15][16][17]. However, the above research does not consider the polarity effect and the lightning current amplitude.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Cloud-to-Ground Lightning Strikes to Wind Turbines Considering Polarity Effect Based on an Improved Stochastic Lightning Model

Bian

Zhou

et al. 2023

Atmosphere

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The accurate determination of the annual lightning flash number to a wind turbine is essential for designing proper lightning protection measures. However, the method to assess the lightning risk of wind turbines recommended by the IEC is not associated with the actual lightning attachment process. Additionally, there is little research on positive cloud-to-ground (+CG) lightning. In this study, a lightning risk assessment method correlated with wind turbines on the basis of an improved stochastic lightning model is proposed. Based on the model, the influence of the lightning current amplitude, wind turbine heights and blade rotations on lightning strike risk are quantitatively analyzed. Moreover, the development and distribution characteristics of negative cloud-to-ground (−CG) lightning and +CG lightning are discussed. Finally, a more accurate calculation method of lightning strike risk is proposed considering the polarity effect. The results show that the effect of blade rotations on lightning risk cannot be ignored when the lightning current is large or when the wind turbine is tall. The −CG lightning has more bifurcation, but the dispersity of its development path and the lightning strike point are both small. The +CG lightning has scattered lightning strike points, and the development paths are tortuous, and. According to the verification calculation, the results calculated in this paper are in better agreement with the observation data than the results calculated by the IEC (International Electrotechnical Commission) recommended method.

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Section: Introductionmentioning

confidence: 99%

Simulation of Cloud-to-Ground Lightning Strikes to Wind Turbines Considering Polarity Effect Based on an Improved Stochastic Lightning Model

Bian

Zhou

et al. 2023

Atmosphere

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“…These are applied for the simulation of laboratory-scale electrical discharges [19], [20] as well as lightning discharges [21], [22]. In addition, fractal models were employed for the lightning performance assessment of common structures [23], [24], power system components such as overhead transmission lines [25], [26], [27], [28] and substations [29], [30], [31], and more recently to lightning incidence estimation to wind turbines [32], [33].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

Ioannidis,

Tsovilis

2024

IEEE Trans. Electromagn. Compat.

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This article introduces a methodology for assessing the direct-stroke shielding performance of high-voltage substations. The proposed methodology considers both negative and positive lightning polarity and can be employed by any lightning attachment model that follows a probabilistic approach. A stochastic lightning attachment model is used, which considers the lightning discharges probabilistic progression. Stochastic model results on lightning discharge propagation, lightning attachment, and induced electric fields are in satisfactory agreement with field observations; comparisons are also made and discussed with respect to other well-established lightning attachment models. An application of the proposed methodology is performed to estimate the lightning incidence rate and shielding failure flashover rate of a 69 kV substation; the effect of lightning activity at the substation location is elucidated.

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“…There are a lot of transmission lines in the distribution IoT (Internet of Things) in electricity [1], which suffer from ice accretion [2], lightning strike [3], galloping [4] and so on during operation. Temperature can effectively reflect the running state of the overhead lines, which needs to be monitored.…”

Section: Introductionmentioning

confidence: 99%

A Brillouin scattering-based fast temperature measurement method for ADSS of distribution IoT in electricity

Yang

Chen

2022

J. Phys.: Conf. Ser.

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In order to decrease time of temperature measurement for optical fiber in ADSS (all-dielectric self-supporting cable) of distribution IoT (Internet of Things) in electricity, the slope-assisted method is applied to its temperature demodulation. According to the introduction of the Brillouin scattering-based optical fiber temperature measurement method, the basic principle of Brillouin frequency shift measurement method based on the spectra fitting algorithm and the slope-assisted method is analyzed. Based on simulated Brillouin spectra with different signal-to-noise ratios (SNRs), the measurement time and accuracy of the spectra fitting algorithm and the slope-assisted method are compared. The results indicate that when if the SNR of Brillouin spectra is not less than 35 dB, the mean error of temperature measurement by the slope-assisted method is less than 0.5°C, which is slightly larger than the error of the spectra fitting algorithm, but the spectra measurement time is only 1/17 of that of the latter.

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A Stochastic Model for Evaluating the Lightning Performance of a −400 kV HVDC Overhead Line

Cited by 17 publications

References 47 publications

Simulation of Cloud-to-Ground Lightning Strikes to Wind Turbines Considering Polarity Effect Based on an Improved Stochastic Lightning Model

Simulation of Cloud-to-Ground Lightning Strikes to Wind Turbines Considering Polarity Effect Based on an Improved Stochastic Lightning Model

Evaluation of the Direct-Stroke Shielding Performance of Substations Through Stochastic Modeling of Lightning Attachment

A Brillouin scattering-based fast temperature measurement method for ADSS of distribution IoT in electricity

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