“These Power Lines Make Me Ill”: A Typology of Residents’ Health Responses to a New High-Voltage Power Line

Risk Analysis ◽  
2017 ◽  
Vol 37 (12) ◽  
pp. 2276-2288 ◽  
Author(s):  
Jarry T. Porsius ◽  
Liesbeth Claassen ◽  
Fred Woudenberg ◽  
Tjabe Smid ◽  
Danielle R. M. Timmermans
Keyword(s):  
High Voltage ◽  
Power Line ◽  
Power Lines

scholarly journals Dynamic Line Rating—An Effective Method to Increase the Safety of Power Lines

2021 ◽  
Vol 11 (2) ◽  
pp. 492
Author(s):  
Levente Rácz ◽  
Bálint Németh
Keyword(s):  
Expert System ◽  
Electric Field ◽  
High Voltage ◽  
Low Frequency ◽  
Power Line ◽  
Power Lines ◽  
Design Parameters ◽  
Monitoring Methods ◽  
Limit Value ◽  
Potential Applications

Exceeding the electric field’s limit value is not allowed in the vicinity of high-voltage power lines because of both legal and safety aspects. The design parameters of the line must be chosen so that such cases do not occur. However, analysis of several operating power lines in Europe found that the electric field strength in many cases exceeds the legally prescribed limit for the general public. To illustrate this issue and its importance, field measurement and finite element simulation results of the low-frequency electric field are presented for an active 400 kV power line. The purpose of this paper is to offer a new, economical expert system based on dynamic line rating (DLR) that utilizes the potential of real-time power line monitoring methods. The article describes the expert system’s strengths and benefits from both technical and financial points of view, highlighting DLR’s potential for application. With our proposed expert system, it is possible to increase a power line’s safety and security by ensuring that the electric field does not exceed its limit value. In this way, the authors demonstrate that DLR has other potential applications in addition to its capacity-increasing effect in the high voltage grid.

scholarly journals Wind: generating power and cooling the power lines

2020 ◽  
Vol 17 ◽  
pp. 105-108
Author(s):  
Marko Kaasik ◽  
Sander Mirme
Keyword(s):  
Wind Speed ◽  
Electric Power ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Mixed Forest ◽  
Wind Farms ◽  
Power Line ◽  
Power Lines ◽  
Local Wind

Abstract. The electric power that can be transmitted via high-voltage transmission lines is limited by the Joule heating of the conductors. In the case of coastal wind farms, the wind that produces power simultaneously contributes to the cooling of high-voltage overhead conductors. Ideally this would allow for increased power transmission or decreased dimensions and cost of the conductor wires. In this study we investigate how well the wind speed in coastal wind farms is correlated with wind along a 75 km long 330 kW power line towards inland. It is found that correlations between wind speed in coastal wind farms at turbine height and conductor-level (10 m) are remarkably lower (R=0.39–0.64) than between wind farms at distances up to 100 km from each other (R=0.76–0.97). Dense mixed forest surrounding the power line reduces both local wind speed and the correlations with coastal higher-level wind, thus making the cooling effect less reliable.

scholarly journals Comparative Analysis of High-Voltage Power Line Models for Determining Short-Circuit Currents in Towers Earthing Systems

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4729
Author(s):  
Rafał Tarko ◽  
Jakub Gajdzica ◽  
Wiesław Nowak ◽  
Waldemar Szpyra
Keyword(s):  
High Voltage ◽  
Current Distribution ◽  
Single Phase ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Power Line ◽  
Power Lines ◽  
Distribution Analysis ◽  
Short Circuits ◽  
Short Circuit Currents

The article deals with the problems of single-phase short-circuit current distribution in overhead power lines. Short-circuit disturbances cause many negative phenomena in power networks. Since experimental studies of short-circuits in real networks are practically impossible to perform, these effects can be evaluated only theoretically, based on short-circuit current calculations with the use of appropriate mathematical models. Although short-circuit modeling is considered to be one of the simplest power system calculations, the exact mathematical description of the phenomena occurring at short-circuits is complex. Simplified normative methods are often used for short-circuit current calculations; however, this does not give ground for a thorough analysis of short-circuit current distribution in power lines. The distributions are analyzed using power line models with different degrees of complexity in line with the assumptions made for a given model. The paper presents the problem of current distribution analysis in high-voltage overhead lines for single-phase faults to the tower structures. Simulation studies were conducted on the models developed for the calculation of short-circuit currents in the high-voltage power line earthing. The objective of the analysis was to assess the validity of simplification assumptions followed by practical recommendations on the applicability of the models.

Application of Weibull Distribution in Calculating Ground Deformation

2012 ◽  
Vol 256-259 ◽  
pp. 15-18
Author(s):  
Shi Bo Li ◽  
Hong Jian Lu
Keyword(s):  
Weibull Distribution ◽  
Electric Power ◽  
High Voltage ◽  
High Power ◽  
Underground Mining ◽  
Ground Deformation ◽  
Power Line ◽  
Power Lines ◽  
Ground Subsidence ◽  
Matlab Program

Weibull distribution was applied to calculate the ground subsidence and deflection value, in order to analysis accurately the influence of ground subsidence caused by underground mining on high voltage electric power lines. The results showed that the effect of reducing surface subsidence was notable and the high power line was working normally. It was accurate enough to calculate ground deformation by using Weibull distribution, and Matlab program can be used to solve the function feasibly.

scholarly journals Fast and Accurate Power Line Corridor Survey Using Spatial Line Clustering of Point Cloud

2021 ◽  
Vol 13 (8) ◽  
pp. 1571
Author(s):  
Yuchun Huang ◽  
Yingli Du ◽  
Wenxuan Shi
Keyword(s):  
High Voltage ◽  
Ground Truth ◽  
Point Clouds ◽  
Power Line ◽  
Power Lines ◽  
Spatial Distance ◽  
Stable Operation ◽  
3D Point Clouds ◽  
Overhead Power Lines ◽  
Power Line Corridor

High-voltage and ultra-high-voltage overhead power lines are important to meet the electricity demand of our daily activities and productions. Due to the overgrowth of trees/vegetation within the corridor area, the distance between the power lines and its surroundings may break through the safety threshold, which could cause potential hazards such as discharge and fire. To ensure the safe and stable operation of the power lines, it is necessary to survey them regularly so that the potential hazards from the surroundings within the power line corridor could be investigated timely. This paper is motivated to quickly and accurately survey the power line corridor with the 3D point clouds. The main contributions of this paper include: (1) the spatial line clustering is proposed to accurately classify and complete the power line points, which can greatly overcome the sparsity and missing of LiDAR points within the complex power line corridor. (2) The contextual relationship between power lines and pylon is well investigated by the grid-based analysis, so that the suspension points of power lines on the pylon are well located. (3) The catenary plane-based simplification of 3D spatial distance calculation between power lines and ground objects facilitates the survey of the power line corridor. Experimental results show that the accuracy of safety distance surveying is 5 cm for power line corridors of all voltage levels. Compared to the ground-truth point-to-point calculation, the speed of surveying is enhanced thousands of times. It is promising to greatly improve both the accuracy and efficiency of surveying the potential hazards of power line corridor.

Insulating Devices for Cranes - Test Results

1990 ◽  
Vol 7 (2) ◽  
Author(s):  
J. Derald Morgan
Keyword(s):  
High Voltage ◽  
Current Flow ◽  
Power Line ◽  
Limiting Current ◽  
Power Lines ◽  
Potential Usefulness ◽  
Test Results ◽  
Insulation System ◽  
Insulation Systems ◽  
High Voltage Power Lines

Two types of devices for cranes, the boom cage (guard) and the insulated link, depend on an insulation system for their operation. In order to properly evaluate the potential usefulness of such devices for personnel protection, their insulation systems must be carefully tested for effectiveness, dependability, and reliability over the life of the device and in the environment of expected use. The boom cage (guard) is suggested as protection from accidental contact of the boom of a crane when working alongside, over, or under high-voltage power lines. The insulated link is suggested as protection to hook tender and riggers by limiting current flow if the crane contacts the power line.

The Impact on the Electromagnetic Environment of Medium Wave Broadcasting Stations Caused by 110kV Power Lines

2014 ◽  
Vol 986-987 ◽  
pp. 2023-2026
Author(s):  
Guan Wang ◽  
Hao Hu ◽  
Fei Yu ◽  
Yu Gong ◽  
Wen Hua Jiang
Keyword(s):  
Electromagnetic Field ◽  
Numerical Analysis ◽  
Computer Model ◽  
High Voltage ◽  
Wave Amplitude ◽  
Power Line ◽  
Power Lines ◽  
Electromagnetic Environment ◽  
High Voltage Power Lines ◽  
The Impact

In this paper, the numerical analysis methods of electromagnetic field is used and by establishing the computer model of 110kV high-voltage power line and medium wave amplitude modulated broadcasting (AM) stations, the impact on the electromagnetic environment of medium wave broadcasting stations caused by 110kV high-voltage power lines is analyzed.

scholarly journals Classification of high-voltage power line structures in low density ALS data acquired over broad non-urban areas

2021 ◽  
Vol 7 ◽  
pp. e672
Author(s):  
Jean-Romain Roussel ◽  
Alexis Achim ◽  
David Auty
Keyword(s):  
High Voltage ◽  
Laser Scanning ◽  
Point Clouds ◽  
Power Line ◽  
Power Lines ◽  
Electrical Network ◽  
Low Density ◽  
Area Of Interest ◽  
Transmission Towers ◽  
High Voltage Power Lines

Airborne laser scanning (ALS) has gained importance over recent decades for multiple uses related to the cartography of landscapes. Processing ALS data over large areas for forest resource estimation and ecological assessments requires efficient algorithms to filter out some points from the raw data and remove human-made structures that would otherwise be mistaken for natural objects. In this paper, we describe an algorithm developed for the segmentation and cleaning of electrical network facilities in low density (2.5 to 13 points/m2) ALS point clouds. The algorithm was designed to identify transmission towers, conductor wires and earth wires from high-voltage power lines in natural landscapes. The method is based on two priors i.e. (1) the availability of a map of the high-voltage power lines across the area of interest and (2) knowledge of the type of transmission towers that hold the conductors along a given power line. It was tested on a network totalling 200 km of wires supported by 415 transmission towers with diverse topographies and topologies with an accuracy of 98.6%. This work will help further the automated detection capacity of power line structures, which had previously been limited to high density point clouds in small, urbanised areas. The method is open-source and available online.

ACTIVE SCREENING MAGNETIC FIELD SYSTEMS SYNTHESIS FOR SINGLE-CIRCUIT HIGH VOLTAGE POWER LINES WITH VERTICAL CONDUCTORS WITH SINGLE COMPENSATING COIL

2017 ◽  
Vol 25 (101) ◽  
pp. 402-408
Author(s):  
Boris B., Kobyljanskij ◽  
◽  
Valery V., Kolomiec ◽  
Boris I., Kuznetsov ◽  
Tatyana B., Nikitina ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Voltage ◽  
Power Lines ◽  
Active Screening ◽  
Field Systems ◽  
High Voltage Power Lines
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