Computation of electromagnetic fields produced by electric power lines and residential electrical wiring

1993 ◽  
Vol 8 (3) ◽  
pp. 1285-1294 ◽  
Author(s):  
F.P. Dawalibi
Keyword(s):  
Electric Power ◽  
Electromagnetic Fields ◽  
Power Lines ◽  
Electrical Wiring

scholarly journals Simulation of Electromagnetic Fields Generated by Overhead Power Lines and Railroad Traction Networks

2021 ◽  
pp. 70-88
Author(s):  
N.V. Buyakova ◽  
V.P. Zakaryukin ◽  
A.V. Kryukov ◽  
D.A. Seredkin
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Electromagnetic Fields ◽  
Smart Grids ◽  
Negative Impact ◽  
Power Industry ◽  
Electric Power System ◽  
Power Lines ◽  
Operating Parameters ◽  
Overhead Power Lines

The establishment of smart grids requires special attention to the safety of power industry facilities and the reduction in their negative impact on personnel and the environment. A significant factor of such an impact is the considerable intensities of electromagnetic field (EMF) generated by such facilities. In the context of power industry digitalization, the development of methods and tools for EMF digital simulation is needed to ensure the electromagnetic safety of the service personnel. Computer models designed to adequately determine the EMF generated by overhead power lines (OPL) can be implemented based on the methods and tools created to determine operating parameters of electric power systems in phase coordinates developed at Irkutsk State Transport University. The technique of electromagnetic safety analysis is implemented based on the proposed approach and has the following features: a systems approach, which is the possibility of simulating electromagnetic fields in terms of properties and characteristics of a complex electric power system; versatility, which allows simulating power lines and traction networks of various designs; appropriateness to the environment achieved by considering the profile of the underlying surface, underground utilities, and artificial structures of rail transport, such as galleries, bridges, and tunnels; comprehensiveness, which is provided by combining the computation of operating parameters and the determination of EMF intensities. The paper describes methods and algorithms developed to determine the intensities of electromagnetic fields generated by multi-conductor power lines at fundamental and higher harmonics frequencies. A technique for the EMF determination at the points of OPL orthogonal crossing is also presented.

scholarly journals DISTÂNCIA DA REDE ELÉTRICA QUE VIABILIZA O USO DE MOTORES DIESEL EM ÁREAS IRRIGADAS DO BRASIL

Irriga ◽  
2007 ◽  
Vol 12 (2) ◽  
pp. 263-272 ◽  
Author(s):  
Rodrigo Otávio Câmara Monteiro ◽  
Priscylla Ferraz ◽  
Rubens Duarte Coelho ◽  
Ronaldo Antônio do Santos
Keyword(s):  
Electric Power ◽  
Rural Areas ◽  
Electrical Power ◽  
Electric Energy ◽  
Power Lines ◽  
Electric Motors ◽  
Irrigation Systems ◽  
Diesel Motors ◽  
The One ◽  
Agricultural Areas

DISTÂNCIA DA REDE ELÉTRICA QUE VIABILIZA O USO DE MOTORES DIESEL EM ÁREAS IRRIGADAS DO BRASIL  Rodrigo Otávio Câmara Monteiro; Priscylla Ferraz; Rubens Duarte Coelho; Ronaldo Antônio do SantosEscola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP [email protected]  1 RESUMO             Na maioria das regiões do país, a energia elétrica aparece como a alternativa, economicamente mais viável, no acionamento de bombas em áreas irrigadas, o que justifica seu uso por aproximadamente 70% dos irrigantes. No entanto, em determinadas situações, não se dispõe, nas proximidades, de rede elétrica, o que passa a viabilizar o uso de motores diesel. Este trabalho, portanto, propôs a análise dos custos horários de bombeamento com a operação de motores diesel e elétricos nas 5 regiões do Brasil. Considerou-se as composições tarifárias verde, azul e convencional, período de irrigação de 2, 4, 6 e 8 meses por ano e operação no horário de ponta e fora de ponta. Para essa avaliação, foi considerado um motor diesel e elétrico, de potência comercial de 50 cv. O ponto de equilíbrio entre motor elétrico e diesel foi determinado pela distância da rede de energia elétrica até o local de consumo. A viabilidade de utilização dos motores diesel em relação ao acionamento de motores elétricos foi encontrada a partir de distâncias da rede de transmissão elétrica de1,32 a8,71 km, sendo a primeira a condição mais atrativa, encontrada na região Sudeste, com 2 meses/ano de irrigação, na tarifa convencional. UNITERMOS: Energia elétrica, irrigação, custo de bombeamento  MONTEIRO, R. O. C.; FERRAZ, P.; COELHO, R. D.; SANTOS, R.A. do. VIABILITY OF DIESEL MOTOR USE IN IRRIGATED AREAS OF BRAZIL DUE TO DISTANCE FROM ELECTRIC POWER LINES  2 ABSTRACT In most agricultural areas ofBrazil, electric power seems to be the most feasible economic alternate methods for the functioning of pumps in irrigated areas, therefore 70%  of irrigation systems use it. However, the viability of electric power lines is restricted to only one part of rural areas, making it necessary the implementation of diesel engines as a source of electrical power for water management. The aim of this study was to investigate the viability of the use of electric energy and diesel motors.  For this study, an electric motor and a diesel one, both of 50HP potency, were evaluated, taking into consideration the following variables: tax composition, areas of the country and number of operation hours per year. The viability of the diesel engine use in relation to implantation of electric motors was determined from  distances that ranged from1.32 kmup to8.71 kmbetween the consumption place and the electric power lines. The most favorable condition is the one found in  the southeast of the country: 2 irrigation months/year.KEYWORDS: Electric energy, irrigation, pump costs 

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 A distributional solution framework for linear hyperbolic PDEs coupled to switched DAEs

2020 ◽  
Vol 32 (4) ◽  
pp. 455-487
Author(s):  
R. Borsche ◽  
D. Kocoglu ◽  
S. Trenn
Keyword(s):  
Partial Differential Equations ◽  
Boundary Conditions ◽  
Electric Power ◽  
Unique Solvability ◽  
Differential Algebraic Equations ◽  
Hyperbolic Partial Differential Equations ◽  
Power Lines ◽  
Algebraic Equations ◽  
Distributional Solution ◽  
Telegraph Equations

AbstractA distributional solution framework is developed for systems consisting of linear hyperbolic partial differential equations and switched differential-algebraic equations (DAEs) which are coupled via boundary conditions. The unique solvability is then characterize in terms of a switched delay DAE. The theory is illustrated with an example of electric power lines modelled by the telegraph equations which are coupled via a switching transformer where simulations confirm the predicted impulsive solutions.

Risk management of overhead electric power lines

2018 ◽  
Author(s):  
Kamran Hafeez ◽  
Muhammad Dilshad Sabir ◽  
Zeeshan Najam ◽  
Muneeb ullah Anjum
Keyword(s):  
Risk Management ◽  
Electric Power ◽  
Power Lines
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