Choosing configurations of transmission line tower grounding by back flashover probability value

Kuklin, Dmitry

doi:10.1007/s11708-016-0398-6

Cited by 12 publications

(4 citation statements)

References 25 publications

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“…The model with one or more π terms that cannot be satisfied is called incomplete similarity model or distortion model. The π term of one or more dependent variables that do not satisfy the second similarity theorem in the model is called incomplete similarity term or distortion term[17] (The following are collectively referred to distortion similarity term). When there is an incompletely similar π term in the simulation test, the predicted prototype results deviate from the actual values.…”

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confidence: 99%

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

Huang

Jeon

et al. 2022

Int J Adv Manuf Technol

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The grounding grid of power equipment is the most basic overvoltage protection device for the power system. Before the design and construction of the power grounding grid, the power system generally uses a scaled-down model to verify the characteristics of the grounding grid. As the types and structures of grounding materials become more and more complex, there are one or more similar items in the grounding simulation test that cannot be scaled down. This paper takes the similarity test of a new type of grounding material-flexible graphite composite grounding material as an example. Firstly, the complete similarity theory of grounding simulation test is deduced. Secondly, the source of similar distortion items is analyzed. Then, the distortion error of different similar items is analyzed. Finally, the distortion similarity test of the flexible graphite composite grounding material is taken as an example to verify the test error influence of the distortion similarity item of the grounding simulation. The research results of this paper can provide reference for grounding simulation test, and at the same time, it can be applied to similar tests in other fields.

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confidence: 99%

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

Huang

Jeon

et al. 2022

Int J Adv Manuf Technol

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“…Lightning discharge is an important factor affecting the stability of power systems. The lightning back flashover is the main reason for lightning accidents in wind turbines (Zhang et al, 2015;Kuklin, 2016;Shen et al, 2020). Reducing the grounding resistance is an effective measure to improve the lightning withstanding level of wind turbines and power systems (Wu et al, 2014;Shen et al, 2017;Taha et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A New Grounding Resistance Reduction Method for Wind Turbines by Grounding Grid Connection in Limited Areas

Liu

Huang

et al. 2022

Front. Energy Res.

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Restricted by cultivated land vegetation, road construction, and land acquisition compensation costs, the grounding electrode extension method is not applicable for grounding resistance reduction of some wind turbines in limited areas. A new grounding resistance reduction method is proposed and verified for wind turbines by connecting nearby wind turbine grounding grids. To study the efficiency of the proposed method, the grounding characteristics of connected grounding grids are calculated. Simulation results indicate that the grounding resistance of connected grounding grids is smaller than that of box extension grounding grids. The grounding characteristics of the grounding grid connection are affected by grounding current frequency and material parameters. The grounding grid connection increases the current dispersion area and reduces the ground potential rise of the grounding conductor.

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“…Electrical soil parameters are important for choosing transmission line grounding configurations [1]. Recent works have demonstrated that the frequency dependent soil properties can strongly influence grounding potential rise and lightning performance of transmission lines [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Electromagnetic Coupling Effects in Measurements of Frequency Dependent Soil Electrical Properties

Kuklin¹

2019

PIER M

Self Cite

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Recent studies show that the frequency dependent soil properties can significantly influence transient grounding resistance and, subsequently, lightning protection and reliability of the electrical grid. However, these properties require further research: for example, it is not clear what factors (apart from the low-frequency resistivity) should be taken into consideration to determine accurately the properties for a particular soil (without conducting laborious measurements). Additional experimental data are needed.When measurements are conducted, the electromagnetic coupling between circuits can cause significant measurement error at frequencies about several MHz. In order to estimate this error, it is convenient to use a calculation method, as in this case, it is possible to set particular frequency dependent properties for the ground and compare those with the calculated ones (using an electrode array).In the article, the electromagnetic coupling error is examined for several commonly used electrode arrays using the finite difference time domain method. This method allows simulating wires with infinite length, which is important for modeling pole-dipole and pole-pole arrays. Its drawback for this type of calculations, however, that it is relatively time-consuming. It was found that among the considered array configurations the error is smallest for the dipole-dipole arrays with the perpendicular allocation of the measurement wires and the pole-dipole array. By increasing the distance between particular parts of measurement wires, one can significantly reduce the error for some other arrays.

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Choosing configurations of transmission line tower grounding by back flashover probability value

Cited by 12 publications

References 25 publications

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

RETRACTED ARTICLE: Structure optimization and preparation of power system grounding grid based on similarity data analysis algorithm

A New Grounding Resistance Reduction Method for Wind Turbines by Grounding Grid Connection in Limited Areas

Numerical Analysis of Electromagnetic Coupling Effects in Measurements of Frequency Dependent Soil Electrical Properties

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