The structure of automated procedures design of air power lines with regard to electromagnetic safety

10.12737/2396 ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 64-66
Author(s):  
Фёдоров ◽  
D. Fedorov
Keyword(s):  
Design Process ◽  
Power Transmission ◽  
Automated Design ◽  
Power Lines ◽  
Air Power ◽  
Automated Procedures

The paper considers the structure of procedures of automated design of air whether deposits power transmission accounting electromagnetic safety. Presents a picture of the structure of procedures of the project, testing of air power lines with regard to electromagnetic safety showing the algorithm of interaction of programs and procedures. Presents the diagram of the design process for air power lines pass for electromagnetic safety.

The architecture of integrated information environment for the automated designing air power lines with regard to electromagnetic safety

10.12737/2394 ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 58-60
Author(s):  
Фёдоров ◽  
D. Fedorov
Keyword(s):  
Electromagnetic Field ◽  
Automated Design ◽  
Information Environment ◽  
Power Lines ◽  
Air Power ◽  
Electric Component ◽  
Forest Belts ◽  
Database Program ◽  
Multi Level ◽  
Integrated Information

The paper describes the architecture of an integrated information environment for ensuring automated design of air power lines with the influence of natural screens in the form of multi-level forest belts on the distribution of the electric component of the electromagnetic field. Architek tour integrated information environment uses a database of MathLab and MathCd. Presents a picture of the architecture of integrated information environment, showing the interaction of the database program.

Organization of the software of automated design of air power lines with regard to electromagnetic safety

10.12737/2395 ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 61-63
Author(s):  
Фёдоров ◽  
D. Fedorov
Keyword(s):  
Automated Design ◽  
Modular Structure ◽  
Power Lines ◽  
Air Power ◽  
Program Complex

The paper considers the organization of the program complex intended for automation of the design air power lines with regard to electromagnetic safety. Presents a picture of the modular structure of the software, showing the scheme of interaction of the modules. Look-Rena optimizing the use of various means and methods of protection under the respective costs and expenses in thousands of rubles.

Classification of Iteration in Engineering Design Processes

1998 ◽  
Author(s):  
Michael J. Safoutin ◽  
Robert P. Smith
Keyword(s):  
Engineering Design ◽  
Design Process ◽  
Design Automation ◽  
Automated Design ◽  
Design Processes ◽  
Standard Definition ◽  
Design Iteration ◽  
Formal Study ◽  
Poor Understanding

Abstract As engineering design is subjected to increasingly formal study, an informal attitude continues to surround the topic of iteration. Today there is no standard definition or typology of iteration, no grounding theory, few metrics, and a poor understanding of its role in the design process. Existing literature provides little guidance in investigating issues of design that might be best approached in terms of iteration. We review contributions of existing literature toward the understanding of iteration in design, develop a classification of design iteration, compare iterative aspects of human and automated design, and draw some conclusions concerning management of iteration and approaches to design automation.

Automated design of high voltage pylons

2021 ◽  
Author(s):  
Jos de Bruijn ◽  
Sander van Alphen
Keyword(s):  
The Netherlands ◽  
Automated Design ◽  
Full Scale ◽  
Energy Resources ◽  
Power Lines ◽  
3D Fem ◽  
Steel Tubes ◽  
The World ◽  
New Energy ◽  
Full Scale Tests

<p>As new energy resources like solar, wind and hydropower are being used more and more over the world, the demand for transport of energy and with that the demand for powerlines is big. Also, in The Netherlands this is the case. TenneT (company responsible for the transport of energy in The Netherlands) had to realise a total of 75 km’s of power lines in one project called Wintrack II. This includes 41 different kind of pole types that carry the conductors. The conductors are carried by so called bipoles, these are conical steel tubes.‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌</p><p>To help TenneT a semi-automatic tooling was made to calculate and to model the different pole types. The poles are modelled with inventor and calculated with different software programs.</p><p>To validate the different calculations and used model’s 3D FEM-calculations are performed as well as full scale tests. Several kinds of calculations and designs are made, especially in steel and concrete. For example, calculations are made on vortex, prestressing of anchors, flange connections and next to that measurements are being performed on full scale poles.</p>

scholarly journals Calculation of thermal field and ampacity of overhead power transmission lines using finite element method

2014 ◽  
Vol 17 (1) ◽  
pp. 16-29
Author(s):  
Long Van Hoang Vo ◽  
Tu Phan Vu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Lines ◽  
Power Transmission Lines ◽  
Thermal Fields ◽  
Overhead Power Transmission Lines ◽  
Transmission And Distribution ◽  
Element Method

The population explosion and development of the national economy are two main causes of increasing the power demand. Besides, the Distributed Generations (DG) connected with the power transmission and distribution networks increase the transmission power on the existing lines as well. In general, for solving this problem, power utilities have to install some new power transmission and distribution lines. However, in some cases, the install of new power lines can strongly effect to the environment and even the economic efficiency is low. Nowadays, the problem considered by scientists, researchers and engineers is how to use efficiently the existing power transmission and distribution lines through calculating and monitoring their current carrying capacity at higher operation temperature, and thus the optimal use of these existing lines will bring higher efficiency to power companies. Generally, the current carrying capacity of power lines is computed based on the calculation of their thermal fields illustrated in IEEE [1], IEC [2] and CIGRE [3]. In this paper, we present the new approach that is the application of the finite element method based on Comsol Multiphysics software for modeling thermal fields of overhead power transmission lines. In particular, we investigate the influence of environmental conditions, such as wind velocity, wind direction, temperature and radiation coefficient on the typical line of ACSR. The comparisons between our numerical solutions and those obtained from IEEE have been shown the high accuracy and applicability of finite element method to compute thermal fields of overhead power transmission lines.

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 Design of Large Connectors of Overhead Power Lines

2018 ◽  
Vol 61 (5) ◽  
pp. 432-439 ◽  
Author(s):  
M. A. Korotkevich ◽  
N. V. Prokofieva
Keyword(s):  
Power Transmission ◽  
Power Lines ◽  
Traditional Theory ◽  
Engineering Structures ◽  
Cross Sectional ◽  
Flexible Filament ◽  
Nominal Voltage ◽  
The Wire ◽  
The Difference ◽  
Overhead Power Lines

It is found that the voltage at the lowest points of the wire or cable sag and at the points of their suspension on the pillars in the same span, determined in accordance with the properties of a perfectly flexible filament (similar to which the wires and cables are located in the span), differ slightly, and taking the difference of the mentioned values into account is only of methodologycal importance. The article presents the results of the calculation of wire and cable sag of large spans of power transmission line of 500 m or more length using both the traditional theory of the catenary line and the theory of equal resistance, when the cross-sectional area of a wire or cable, proportional to their tension, is considered variable in the span length, which provides the same probability of breaking them at any point of the span. When calculating the wires and cables in normal and emergency conditions, the largest sags are determined, which take place either at a higher ambient temperature or at a load of the wire with ice. The wire must be mounted in such a way as to ensure the normalized permissible dimensions to crossed engineering structures, water barriers or land, that are determined depending on the nominal voltage of the line. It is noted that the values of the wire and cable sags determined using the theory of the catenary line for the transition spans are less (although slightly) as compared to the data obtained on the basis of the theory of the equal resistance circuit. This must be taken into account in the design process.

Automated design process modelling and analysis using immersive virtual reality

2009 ◽  
Vol 41 (12) ◽  
pp. 1082-1094 ◽  
Author(s):  
Raymond C.W. Sung ◽  
James M. Ritchie ◽  
Graham Robinson ◽  
Philip N. Day ◽  
J.R. Corney ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Design Process ◽  
Automated Design ◽  
Process Modelling ◽  
Immersive Virtual Reality

Analysis of mathematical models of transmission lines.

2020 ◽  
Vol 23 (2) ◽  
pp. 16-19
Author(s):  
G. SHEINA ◽  
Keyword(s):  
Mathematical Model ◽  
Power Systems ◽  
Transmission Lines ◽  
Power Supply ◽  
Power Supply System ◽  
Power Transmission ◽  
Supply System ◽  
Power Lines ◽  
Power Transmission Lines ◽  
The Mathematical Model

This paper investigates a mathematical model of one elements of the power supply system - power transmission lines. The type of models depends on the initial simplifications, which in turn are determined by the complexity of the physics of processes. The task of improving the accuracy of modeling of emergency processes in the power system is due to the significant complexity of modern power systems and their equipment, high-speed relay protection, automation of emergency management and the introduction of higher-speed switching equipment. One of the reasons for a significant number of serious emergencies in the system is the lack of complete and reliable information for modeling modes in the design and operation of power systems. The development of a mathematical model of a three-phase power line, which provides adequate reflection of both normal and emergency processes, is relevant. The advanced mathematical model of power transmission lines allows to investigate various operational modes of electric networks. The improved mathematical model of the power transmission line reflects all the features of physical processes at state modes and transient process and provides sufficient accuracy of the results. The type of mathematical model of power transmission lines depends on the accepted simplifications, depending on the task of research. The purpose of this work is to analyze the mathematical model of the power transmission line to study the modes of operation of the power supply system, with the possibility of its application to take into account all the design features of overhead and cable power lines. The mathematical model of the power line for the study of the modes of operation of the power supply system is analyzed. It is used to take into account the design features of overhead and cable power lines, skin effect.

Automated design process for hybrid regression modeling with a one-class SVM

2019 ◽  
Vol 67 (10) ◽  
pp. 843-852 ◽  
Author(s):  
Moritz Böhland ◽  
Wolfgang Doneit ◽  
Lutz Gröll ◽  
Ralf Mikut ◽  
Markus Reischl
Keyword(s):  
Design Process ◽  
Regression Models ◽  
Data Science ◽  
Automated Design ◽  
Model Complexity ◽  
Support Vector ◽  
Local Data ◽  
Benchmark Datasets ◽  
Data Coverage ◽  
First Time

Abstract The accuracy of many regression models suffers from inhomogeneous data coverage. Models loose accuracy because they are unable to locally adapt the model complexity. This article develops and evaluates an automated design process for the generation of hybrid regression models from arbitrary submodels. For the first time, these submodels are weighted by a One-Class Support Vector Machine, taking local data coverage into account. Compared to reference regression models, the newly developed hybrid models achieve significant better results in nine out of ten benchmark datasets. To enable straightforward usage in data science, an implementation is integrated in the open source MATLAB toolbox SciXMiner.

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