Review of research on nonstandard lightning voltage waves

Chowdhuri, P.; Baker, A.C.; Carrara, G.; Chisholm, William A.; Feser, K.; Grzybowski, S.; Lux, A.E.; Newnam, F.R.

doi:10.1109/61.329529

Cited by 28 publications

(2 citation statements)

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“…In such case, equipment is exposed to non‐standard impulse voltages. Another important observation is that the naturally occurring transients do not always have the standard waveshape . The actual lightning or switching surges consist of a wide variety of complex waveforms differing in amplitude and waveshape .…”

Section: Introductionmentioning

confidence: 99%

Simulation of overvoltage stresses on surge arrester insulation

Bhuyan

Chatterjee

2015

Int. Trans. Electr. Energ. Syst.

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SUMMARYImpulse voltage testing is generally carried out for assessing the insulation strength of power equipment using standard impulse voltage waveforms in high-voltage laboratory. However, in actual field, the power equipment experiences standard and non-standard lightning impulse voltages. The main objective of this work is to analyse the voltage stress on surge arresters under standard and non-standard lightning impulse waveforms. Surge arrester models are developed in MATLAB (The MathWorks, Inc., Natick, Massachusetts, United States), and residual voltage test results are compared with manufacturer data for validation. Impulse voltage test is performed on the Institute of Electrical and Electronics Engineers surge arrester model using standard and non-standard lightning impulse voltage waveforms. The obtained test results showed that non-standard impulses have the potential to develop higher voltage stress and hence pose a high risk to surge arresters. However, results of this study provide the basis for further laboratory-based investigation considering a wide variety of impulse voltage waveforms representing the real lightning overvoltages. The test results will contribute to identify the need for modifying existing test standards or introducing new standards for impulse testing of surge arrester.

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Section: Introductionmentioning

confidence: 99%

Simulation of overvoltage stresses on surge arrester insulation

Bhuyan

Chatterjee

2015

Int. Trans. Electr. Energ. Syst.

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“…If the overvoltage waveform or the peak horizontal line on the insulator intersects with the VoltTime Curve, it is considered to trigger a flashover. This method is mostly applicable to the IEEE lightning current [91].…”

Section: B Volttime Curvementioning

confidence: 99%

Design of an Internal Down-Lead System for a 400 kV Composite Tower and Investigation of Lightning Performance

Yin¹

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The recent development of modern renewable energy and the growing electrical power system bring a huge demand for environmentally friendly transmission lines. Aiming to this goal, the 'Power Pylons of the Future (PoPyFu)' project designed an innovative composite material pylon with a 'Y' shape profile for 400 kV AC transmis sion lines. This pylon consists of lightweight composite materials and has a compact configuration. Compared with the conventional pylons made of steel, the composite pylon requires less rightofway, lower manufacturing cost, fewer maintenance efforts, and presents an attractive appearance. Meanwhile, this kind of pylon has been con firmed to possess a perfect lightning shielding performance due to its special structure. With these attractive advantages, this pylon is believed to be a promising candidate as a nextgeneration of transmission tower.However, the downlead configuration, which directly concerns the transmission pylon safe operation when lightning strikes the tower, has not been determined. In this project, a conductor going through the hollow crossarm and pylon body is proposed as the downlead system. In order to inhibit the partial discharge inside the pylon, the gap between the downlead and crossarm is filled with a suitable insulating material. Based on this downlead scheme, the Ph.D. research work mainly focuses on the op timization of the downlead system, insulation verification, and proposing empirical formulas to estimate the backflash critical current for this novel pylon. The primary research contents are summarized as follows:The lightning performance of the pylon with the conductor passing through the filled crossarm and pylon body as a downlead system has been studied. The elec tromagnetic transient (EMT) model is established in PSCAD/EMTDC to obtain the transient response to lightning surges. In the modeling of the equivalent circuit, the surge impedance of the inclined downlead circumscribed by composite materials is expressed in integral form and validated by the Finite Element Method (FEM). In addi tion, the mutual coupling effect between separated downleads and the parasitic capac itance is considered. The simulation results show that the lightning performance of the Yshaped pylon is worse than that of conventional steel Eagle and Donau towers at the same voltage level, and the downlead system is needed to be optimized to improve the composite pylon's lightning performance. Then, potential multifactors that may affect the lightning performance have been studied including the downlead configu PrefaceThis Ph.D. thesis summarizes the outcomes from the Ph.D. project entitled "Design of an Internal DownLead System for a 400 kV Composite Tower and Investigation of Lightning Performance", which is supported by

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