Lightning performance of transmission lines based upon real return-stroke current waveforms and statistical variation of characteristic parameters

Rodrigues, André Roger; Guimarães, Geraldo Caixeta; Chaves, Marcelo Lynce Ribeiro; Boaventura, Wallace do Couto; Caixeta, Daniel Araújo; Tamashiro, Márcio Augusto

doi:10.1016/j.epsr.2016.12.003

Cited by 13 publications

(6 citation statements)

References 9 publications

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“…7 and 8 for the OHLs of Fig. 1 (66 kV up to 765 kV) are in line with those of [8] and [14] where higher overvoltages and lower IBF values were obtained for the CIGRE waveforms as compared with doublepeak waveforms under the same current parameters. Actually, Fig.…”

Section: B Comparison Of Double-peak and Cigre Waveformssupporting

confidence: 84%

“…IBF for the CIGRE waveform was reported 7% lower for a 500 kV OHL with horizontal phase configuration in [8]. Lower IBF values up to 3% were found from [14] for 138 kV and 230 kV single-circuit OHLs with vertical and horizontal phase configurations, respectively.…”

Section: B Comparison Of Double-peak and Cigre Waveformsmentioning

confidence: 89%

“…Hence, the CIGRE and double-peak waveforms may approximate better recorded lightning currents. However, studies on the effects of applying these two waveforms to OHL simulations have shown that results may vary under the same waveform parameters [8], [14]. Most importantly, the use of recorded waveforms in simulations may yield overvoltages and critical lightning currents causing OHL insulation flashover differing considerably from those obtained by the CIGRE and doublepeak waveforms.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Approximating Recorded Lightning Currents With CIGRE Waveforms on Computed Fast-Front Overvoltages and Critical Lightning Currents Causing Flashover to Overhead Transmission Lines

Patsalis

Mikropoulos

Tsovilis

2023

IEEE Trans. Power Delivery

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This work investigates through simulations with the ATP-EMTP program the application of recorded lightning current waveforms to the estimation of fast-front overvoltages and critical lightning currents causing flashover to overhead transmission lines. Typical lines are evaluated with both horizontal (single-circuit) and vertical (double-circuit) phase configurations and AC voltage from 66 kV up to 765 kV. Backflashover as well as shielding failure flashover simulations were performed for several recorded first return-stroke current waveforms of negative downward lightning flashes, as reported in literature. Their approximations with the widely-used CIGRE lightning current waveform were also employed in simulations. CIGRE waveforms, considering the statistical distributions of the front time, maximum steepness, and time to half value, were used as well. A comparison between double-peak waveforms, composed of seven Heidler functions, and their CIGRE approximations is made. The latter generally yield conservative values of overvoltages and critical backflashover currents. The leader development models used for assessing the behavior of insulators and long air gaps under fast-front overvoltages are discussed regarding the criterion for the termination of leader propagation yielding withstand of line insulation.

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Section: B Comparison Of Double-peak and Cigre Waveformssupporting

confidence: 84%

Section: B Comparison Of Double-peak and Cigre Waveformsmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Approximating Recorded Lightning Currents With CIGRE Waveforms on Computed Fast-Front Overvoltages and Critical Lightning Currents Causing Flashover to Overhead Transmission Lines

Patsalis

Mikropoulos

Tsovilis

2023

IEEE Trans. Power Delivery

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“…The soil resistivity and permittivity are 50 Ω m and 8, respectively. The most widely used expression to represent lightning waveform is the so-called Heidler function [36]…”

Section: Vertical Structurementioning

confidence: 99%

Hybrid continuous circuit‐trapezoidal integration method analysis of multi‐cross structure of grounding system

Asadpourahmadchali

Niasati

Alinejad‐Beromi

2020

IET Science, Measurement & Technology

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“…A great number of studies were conducted on the overvoltage online monitoring of power systems and the dielectric breakdown characteristics under impulse voltage [11][12][13][14][15][16][17][18]. Significant differences existed among the waveform characteristics of overvoltage at the various nodes of power systems.…”

Section: Introductionmentioning

confidence: 99%

Effects of waveform parameters on the breakdown characteristics of OIP subjected to impulse voltages and evaluation method for waveform equivalence

Sima

Lian

Sun

et al. 2019

IET Science, Measurement & Technology

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The impulse voltage wave invading a transformer is not the double exponential impulse wave (DEIW) specified by the IEC but a non-standard waveform with oscillation attenuation characteristics, and this fact leads to doubts about the scientificity and optimality of insulation coordination. A key solution for this issue is the establishment of an equivalent relationship between the measured non-standard impulse voltage wave and the DEIW. In this study, a test platform of multiparameter impulse voltage was set up. Then, the authors obtained the 50% breakdown voltage (U 50%) of the oil-impregnated paper (OIP) for transformer under the bipolar oscillatory attenuated impulse wave (BOAIW) and the DEIW with different waveform parameters. The effects of waveform parameters on the breakdown characteristics of the OIP were finally revealed. On the basis of experimental data and several mathematical methods, the authors established the U 50% prediction mathematical models for the OIP under the BOAIW and DEIW. Based on the prediction models and the microfluctuation characteristics of measured overvoltage's waveform parameters, the authors proposed a method for evaluating the waveform equivalence. The characteristics of voltage amplitude and change rate were regarded as the two key factors for the waveform equivalence of this method. 2 Experimental setup 2.1 Sample pretreatment All samples were pretreated before the test. We filtered the #25 transformer mineral oil to ensure that the transformer oil meets the

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Lightning performance of transmission lines based upon real return-stroke current waveforms and statistical variation of characteristic parameters

Cited by 13 publications

References 9 publications

Effects of Approximating Recorded Lightning Currents With CIGRE Waveforms on Computed Fast-Front Overvoltages and Critical Lightning Currents Causing Flashover to Overhead Transmission Lines

Effects of Approximating Recorded Lightning Currents With CIGRE Waveforms on Computed Fast-Front Overvoltages and Critical Lightning Currents Causing Flashover to Overhead Transmission Lines

Hybrid continuous circuit‐trapezoidal integration method analysis of multi‐cross structure of grounding system

Effects of waveform parameters on the breakdown characteristics of OIP subjected to impulse voltages and evaluation method for waveform equivalence

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