Analysis of Electric Characteristics of High-Elevation Stretches of the Tucuruí–Macapá–Manaus Connection

Kurokawa, Sérgio; Costa, Éder Silva; Pinto, Alexandre; Filho, José Pissolato

doi:10.1007/s40313-013-0059-5

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…In this regard, the following can be mentioned: average and extreme temperatures, relative air densities, relative and absolute humidity, Atmospheric Correction Factors (ACF), regional lightning activity, etc. [17]. Due to their uncontested importance, the ACF variables for 60Hz and power surges and the regional lightning levels are given appropriate emphasis.…”

Section: B Atmospheric Correction Factors and Lightning Activitymentioning

confidence: 99%

Structural Analysis of Steel Transmission Towers for Large River Crossing of Overhead Transmission Lines

Rechtman¹,

Motta²,

Menezes³

et al. 2020

Eng. Technol. Appl. Sci. Res.

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This study aims to investigate the structural behavior of steel transmission towers used for large river crossings. Design standards usually applied to analyze these structures don’t consider situations in which the transmission towers are used in river crossings. In Brazil, due to the fact that it is necessary to cross large areas owing to the rivers’ size, these towers assume great heights. It should be noted that the towers can weigh up to 24,500kN and exceed 300m in height. The current study develops an analysis that surpasses the existing standard methodologies, aiming for a structural optimization compatible with vast crossings and new materials, aiming to resolve this design challenge regarding power transmission lines. To do this, a river crossing spanning 2,300m, situated in the northern region of Brazil, was studied based on the use of three different conductor configurations, electrically equivalent, commonly used wind design standards, and structural solutions utilizing tubular and angle profiles.

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Section: B Atmospheric Correction Factors and Lightning Activitymentioning

confidence: 99%

Structural Analysis of Steel Transmission Towers for Large River Crossing of Overhead Transmission Lines

Rechtman¹,

Motta²,

Menezes³

et al. 2020

Eng. Technol. Appl. Sci. Res.

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“…The self‐ and mutual capacitances in [ Y ] do not depend on the frequency and are calculated as functions of the geometrical and physical characteristics of the line and the conductivity of the air. This approach may also be inappropriate because the shunt capacitance and the capacitances between phases are intrinsically associated with environmental conditions such as the atmospheric humidity, the dielectric constant and the weather [10]. The capacitance matrix for a multiconductor transmission line can be expressed as follows

(][, C) = (][, \begin{matrix} 1em4pt \\ C_{11} & C_{12} & \dots & C_{1 n} \\ C_{21} & C_{22} & \dots & C_{2 n} \\ ⋮ & ⋮ & ⋱ & ⋮ \\ C_{n 1} & C_{n 2} & \dots & C_{n n} \end{matrix})

The preceding discussion of transmission line parameters demonstrates that the electrical parameters can be calculated using several approaches and mathematical tools.…”

Section: Transmission Line Electrical Parametersmentioning

confidence: 99%

Estimation of transmission line parameters using multiple methods

Costa¹,

Kurokawa²

2015

IET Generation, Transmission & Distribution

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An estimation procedure for transmission line parameters is developed that combines a new method of determining line parameters with others available in the technical literature. Each estimation method has certain advantages and restrictions that depend on the operating conditions of the transmission system (e.g. the load profile), the physical characteristics of the line (e.g. the length and the geometry) and electromagnetic phenomena (e.g. singleor multiphase faults). The proposed estimation procedure exploits the major attributes of both the new determination method developed in this study and other well-established methods previously presented in the technical literature. Based on current and voltage measurements obtained from synchronised fault records from both line terminals, a combination of multiple methods can be used to accurately estimate most line parameters, a task that is typically impossible using a single method.

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Lightning Performance of MMC-HVDC Power Transmission Systems Using Metal-Oxide Surge Arresters

Lima,

Porfiro,

Pereira

et al. 2023

J Control Autom Electr Syst

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Analysis of Electric Characteristics of High-Elevation Stretches of the Tucuruí–Macapá–Manaus Connection

Cited by 6 publications

References 8 publications

Structural Analysis of Steel Transmission Towers for Large River Crossing of Overhead Transmission Lines

Structural Analysis of Steel Transmission Towers for Large River Crossing of Overhead Transmission Lines

Estimation of transmission line parameters using multiple methods

Lightning Performance of MMC-HVDC Power Transmission Systems Using Metal-Oxide Surge Arresters

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