A Review of Field-to-Transmission Line Coupling Models With Special Emphasis to Lightning-Induced Voltages on Overhead Lines

2012 ◽  
Vol 54 (4) ◽  
pp. 898-911 ◽  
Author(s):  
Farhad Rachidi
Keyword(s):  
Transmission Line ◽  
Overhead Lines ◽  
Line Coupling

scholarly journals Field to transmission line coupling: A test case within HIRF SE

2012 ◽  
Author(s):  
S. Bertuol ◽  
M. Ridel ◽  
J-P. Parmantier ◽  
L. Pisu ◽  
M. Bozzetti ◽  
...  
Keyword(s):  
Transmission Line ◽  
Test Case ◽  
Line Coupling

Optimal transmission line coupling generation system design for rural electrification

2020 ◽  
pp. 1-1
Author(s):  
Joan Sebastian ChavesHuertas ◽  
Jhair Acosta Sarmiento ◽  
Maria Cristina Tavares
Keyword(s):  
Transmission Line ◽  
System Design ◽  
Rural Electrification ◽  
Generation System ◽  
Line Coupling

Transmission Line Theory for Field-to-Transmission Line Coupling Calculations

1988 ◽  
Vol 8 (2-4) ◽  
pp. 171-211 ◽  
Author(s):  
M. lanoz ◽  
C. A. Nucci ◽  
F. M. Tesche
Keyword(s):  
Transmission Line ◽  
Transmission Line Theory ◽  
Line Theory ◽  
Line Coupling

scholarly journals Estimating the impacts of power line collisions on Ludwig’s Bustards Neotis ludwigii

2011 ◽  
Vol 21 (3) ◽  
pp. 303-310 ◽  
Author(s):  
ANDREW R. JENKINS ◽  
JESSICA M. SHAW ◽  
JON J. SMALLIE ◽  
BRADLEY GIBBONS ◽  
RONELLE VISAGIE ◽  
...  
Keyword(s):  
Transmission Line ◽  
South African ◽  
Transmission Lines ◽  
Arid Zone ◽  
Conservation Status ◽  
Limited Data ◽  
Overhead Lines ◽  
South West ◽  
Overhead Power Lines ◽  
Global Population

SummaryLudwig’s Bustard Neotis ludwigii, endemic to Africa’s south-west arid zone, is susceptible to collisions with overhead power lines. Limited data from the south-eastern part of its range suggest that this factor may threaten its survival. We estimated transmission line collision rates for Ludwig’s Bustard across its South African range to assess the effect of this mortality on the population. Conservatively, collision rates averaged at least 0.63 ± 0.12 fatal collisions per km of transmission line per year, with relatively little regional variation. Despite being less abundant, the larger males were more collision-prone than females, which might account for the female-biased population. Extrapolating collision rates across the range of the species suggests that 4,000–11,900 birds are killed annually on high-voltage transmission lines. Actual mortality on overhead lines is probably much greater, given biases in carcass detection (crippling, scavenging and habitat biases), as well as the fact that our estimate excludes mortality on lower voltage distribution lines and telephone wires. Given an estimated global population of 56,000–81,000 birds in the late 1980s, the demographic invariant method suggests that such mortality is unsustainable. This result supports the recent upgrading of the conservation status of Ludwig’s Bustard from ‘Least Concern’ to ‘Endangered’, and highlights the need for further research on this problem.

Method for the acceleration of transmission-line coupling calculations

2000 ◽  
Vol 48 (9) ◽  
pp. 1531-1536 ◽  
Author(s):  
B. Van Thielen ◽  
G.A.E. Vandenbosch
Keyword(s):  
Transmission Line ◽  
Line Coupling

scholarly journals Currents in Line Conductors due to an Electron Avalanche

2021 ◽  
Author(s):  
Debasish Nath ◽  
Udaya Kumar
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Basic Mechanism ◽  
Background Field ◽  
Modern World ◽  
Experimental Investigations ◽  
Electromagnetic Noise ◽  
Overhead Lines ◽  
Tem Mode ◽  
Induced Currents

<p>Transfer of bulk electric power required in the modern world can be realized only through EHV and UHV transmission lines. The scenario is dominated by overhead lines in which electromagnetic noise generated by corona is an important concern. Corona induced currents propagate along line conductors producing electromagnetic noise, which is essential to be quantified. In literature, large amount of work is based on experimental investigations which considers only limited frequency ranges and is not applicable to new line configurations. A set of semi-analytical methods have also been proposed, which employ the transmission line model for analysis. However, quasi-TEM mode of propagation inherently assumed by them has been questioned. Moreover, the corona current is modeled as shunt source without relating to the mechanism of induction due to corona. The present work aims to investigate the basic mechanism of current induction using an isolated avalanche developing under space charge modulated background field. The corresponding induced currents are quantified and the structure of the electric and magnetic fields is extracted. The basic issue with the long transmission line modelling is amply demonstrated. Even though single avalanche, being the basic process building corona is considered, general inferences can be drawn regarding corona on lines.</p>

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