Our technical team is capable of all stages of overhead power line design. Complementary skills in the areas of calculation and project management as well as additional capacities including in civil engineering provide enormous added value for our customers. Verification of pylon structural metalwork using tower software. Depot areas tend to have only a single wire and are known as simple equipment or trolley wire. The chapters on line survey, construction and maintenance address. Level ii applicable to overhead lines where collapse of the line would cause negligible danger to life and property and alternative. Manual for transmission lines and substation construction. Old local power line is to be decommissioned and replaced with a whole new 330kv overhead power line. Learn about the planning, design, installation, and maintenance principles that drive todays overhead distribution practices.
The specifications and drawings of this bulletin have been published to set forth requirements, specifications and. Kodi archive and support file community software vintage software apk msdos cdrom software cdrom software library console living room software sites tucows software library shareware cdroms cdrom images zx spectrum software capsules compilation doom level cd. This line is the weakest leg of the scottish transmission ring. Oct 05, 2005 the beaulydenny upgrade in scotland is an overhead power transmission line replacement project. Overhead distribution systems american public power. Typical 230kv underground transmission line construction underground construction begins by surveying the alignment and establishing the extent of the.
Api residential 2016 program topics to cover asnzs7000 overhead line design standard overhead line ratings transmission vs distribution distribution design aspects major line components. Purpose this standard for transmission line design specifies the minimum structural, electrical and geotechnical design required for overhead transmission lines used in transgrids network. Your goto guide for overhead conductors and line design. During the period in which general order 64a has had its application, the industry has witnessed, as. Power rail overhead line parameters specify wire support points for turnouts for main and diverging lines. Pdf sagtension calculation program for wood pole overhead. The purpose of this handbook is the presentation, in one volume, of descriptions of the methods and the materials employed in overhead line construction, and a tabulation of the necessary formulae for the electrical and mechanical solutions of various transmission and distribution problems. Overhead line construction, ducting, land reinstatement. Fundamentals of overhead transmission line design course t. Handbook on overhead line construction internet archive.
The preliminary design defines the qualitative and functional characteristics of the connection. Ea nsw overhead line construction, standard drawings and design data, vol. Handbook on construction techniques asian development bank. Starting from 1967 in russia, and also in the usa and canada, overhead lines for voltage of 765 kv were built. Import a variety of file formats, including dxf, csv, pdf, mapinfo, and shp. Supports designers of ausgrids overhead network for ausgrid. Overhead power lines planning, design, construction. Overhead line construction overhead power lines are the infrastructure for electric power transmission and distribution along large distances. Because overhead lines are exposed to trees and animals, to wind and lightning, and to cars and kites, they are a critical component in the reliability of distribution circuits. Overhead power lines planning, design, construction nolasco.
Overhead design and construction fundamentals presenter. Figuring out how to strike that balance is the art of overhead allocation. The beaulydenny upgrade in scotland is an overhead power transmission line replacement project. Adesina and others published work specification for the construction of 33kv overhead lines across a lagoon using. Overhead conductor installation guide general cable. Best overhead line software power line systems, inc. Upon completion of this course, delegates will have an overall appreciation of the overhead line construction execution and management. The task of this project was to provide transmission tower to an overhead power line of strategic importance in lithuania. It provides sophisticated design and analyzing tools to optimize transmission. Overhead conductor installation guide recommended practices firs dition 1 introduction this guide provides suggestions for various methods, equipment and tools that have been found practical based on field experience during the installation of general cables transpowr bare overhead conductors on transmission lines. Best overhead line software plscadd, plspole and tower power line systems windows programs for the design of overhead power lines and their structures are used in more than sixty countries by hundreds of utilities, consultants and fabricators throughout the world.
Feb 26, 2003 overhead power lines presents not only the scientific and engineering basis for the electric and mechanical design, but also comprehensively describes all aspects of most recent technology, including the selection and design of components such as conductors, insulators, fittings, supports and foundations. Colin lee principal engineer asset management energex email. It provides sophisticated design and analyzing tools to optimize transmission network designs in plan and profile. Photo courtesy of nhpuc overhead transmission lines are typically placed on larger structures and elevated higher above the ground than common distribution circuits. Endeavour energy reserves the right to vary the content of this. Southwire is a world leader in overhead transmission conductors, we are constantly pioneering ways to bring sustainable solutions to our customers. On december 17, 1928, general order 64a was issued applicable to lines constructed or reconstructed on and after that date. Often, even though software providers are well aware of bugs in their products, the payoff of fixing them is not worth the reward, because of the overhead. Pdf computerbased mechanical design of overhead lines. Normally one primary circuit is used per pole, but utilities sometimes run more than one circuit per structure. Resourcebased costing is the method in which costs are assigned by each. Traditionally, construction overhead uses resourcebased costing and volumebased allocation kim and ballard 2001, holland and hobson 1999.
The introduction of resinbonded glassfibre in the construction of. A method for the sagtension calculation in electrical overhead lines. Construction of transmission and distribution lines. Usually, the establishment of the voltage on major transmission lines, the. Overhead power line design electra is powerful overhead power line cad design software which combines design and documentation production workflows for electrical distribution design. Standard for distribution line design overhead these standards created and made available are for the construction of ergon energy infrastructure.
However, this technology has continuously developed, for example, adjusting the design of the lines to new transmission needs and to available rightsofway, and to accommodate environmental concerns or. Design codes, standards, and manuals used in power line systems software. Reconstruction of a 330 kv overhead line, lithuania power. The failure of this line during a storm might pose an inconvenience but would not normally pose a direct threat to human life. Construction manual washington state department of. Transmission line design manual bureau of reclamation. The zigzagging of the overhead line is not required for trolley poles. Level i applicable to overhead lines where collapse of the line may be tolerable with respect to social and economic consequences. Along streets, alleys, through woods, and in backyards, many of the distribution lines that feed customers are overhead structures. The main features of the mechanical overhead lines design software are interactivity. Rules for overhead electric line construction adopted december 23, 1941 effective july 1, 1942 decision no.
Plscadd is a complete overhead line design software. Submit three prints of construction program and each revised program. A programmersoftware engineer may have a choice of several algorithms, encodings, data types or data structures, each of which have known characteristics. From bentley rail software geometry, power rail overhead line determines turnout type and automatically positions reference lines and support points appropriately. The basic elements of overhead power line technology have been known for many years. Design of overhead contact systems gawire, a software package.
Site restoration for underground construction is similar to overhead transmission line construction restoration. May 22, 2015 site restoration for underground construction is similar to overhead transmission line construction restoration. Your goto guide for overhead conductors and line design t. Overhead line professionals for the planning and erection. The purpose of this article is to give a general overview of the steps that are necessary in the planning and construction of a typical overhead transmission line, to give newcomers to the trade a general format to follow, and assist transmission design engineers in understanding how such lines are built. As the information contained in this publication is subject to change from time to time, endeavour energy gives no warranty that the information is correct or complete at the time of its use or is a definitive statement of procedures. This standard complies with asnzs 7000 and any exceptions are explicitly noted. Standard for distribution line design overhead ergon energy.
Overhead power transmission line replacement project power. It consists of one or more conductors suspended by towers or utility poles. This practical handbook is a comprehensive guide on evaluating the design, construction, and uprating of overhead transmission systems while containing information on best practices, new industry standards, and. Many of the requirements of the codes and standards listed below are hardcoded in our software and can optionally be selected by name. It is the primary component in the flow of revenue for a utility and also the component most exposed to hazards. When construction is completed, roadways, landscaped areas, and. In the same year the overhead line traversing of the strait of messina went into service in italy.
Since most of the insulation is provided by air, overhead power lines are generally the lowestcost method of power. After all, the idea is to allocate or, distribute costs that each job shares responsibility for meaning the job either caused or benefited from the cost. Mar 04, 2014 title slide of overhead power lines planning, design, construction nolasco, et al slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Guidelines for the construction and maintenance of. The cost of conductors is one of the major expenses in any overhead power line construction. Handbook on overhead line construction by national electric light association. These standards created and made available are for the construction of ergon energy infrastructure. When choosing among them, their respective overhead should also be considered. Discuss how to update your utilitys overhead line design and construction standards, make better design decisions, reduce construction costs.
Replace previous bulletin 505 with this bulletin and file with 7 cfr part 1728. However, the construction industry has not changed the method of controlling overhead costs in construction projects. This standard defines the performance design parameters for overhead transmission lines constructed to. Planning, design, construction power systems kiessling, friedrich, nefzger, peter, nolasco, joao felix, kaintzyk, ulf on. It will replace the 2kv transmission line between beauly and wharry burn, with a 400kv double circuit line. In ptec 500 participants gain an understanding of the overhead line theory and application, including planning, design, construction, operation and maintenance. Electra is a powerful overhead power line cad design software which combines design and documentation production workflows for electrical distribution design. Fundamentals of overhead transmission line design course. With the help of their construction accounting software, contractors can choose to allocate only a portion from each overhead gl account.
This can be helpful, for example, if you use an overhead allocation account for depreciation costs that your cpa doesnt want to allocate. When construction is completed, roadways, landscaped areas, and undeveloped areas are restored to their original condition. Pole line construction new hampshire public utilities. Pdf the sag and tension values of overhead conductors are influenced by the creep developed during the line lifetime. System planning, design, construction, and protection. Manual for transmission lines and substation construction and maintenance activities volume i best management practices volume ii permits prepared for prepared by hdr engineering, inc 701 xenia avenue south, suite 600 minneapolis, minnesota 55416 february 2007. Overhead constructions come in a variety of configurations see figure 2. Overhead power lines presents not only the scientific and engineering basis for the electric and mechanical design, but also comprehensively describes all aspects of most recent technology, including the selection and design of components such as conductors, insulators, fittings, supports and foundations.
Manual for transmission lines and substation construction and maintenance activities volume i best management practices. If you continue browsing the site, you agree to the use of cookies on this website. In the overhead line standard security levels are distinguished as follows. Pdf work specification for the construction of 33kv overhead lines. When overhead line systems were first conceived, good current collection was possible only at low speeds, using a single wire. Title slide of overhead power lines planning, design, construction nolasco, et al slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The best method for allocating overhead in construction is a way thats fair. Manual for transmission lines and substation construction and. Many of the requirements of the codes and standards listed below are hardcoded in.
Live line extension links for overhead line construction a small distribution substation. The purpose of this article is to give a general overview of the steps that are necessary in the planning and construction of a typical overhead transmission line, to give newcomers to the trade a general format to follow, and assist transmission design engineers in. Overhead power line design and construction roda spa. Overhead power transmission line replacement project. Get the third edition of southwire companys overhead conductor manual. Best overhead line software power lines systems, inc. For example, an implicit data structure or succinct data structure may provide low space overhead, but at the cost of slow performance spacetime tradeoff. Design codes, standards, and manuals used in power line. Sagtension calculation program for wood pole overhead lines. Thus, dimensioning of simple contact lines, catenarys type systems and. External companies should not use these standards to construct nonergon energy assets. Delegates will also be in a position to identify non industry practices on site and. But, the costs should also be proportional to that responsibility.
Identify the major line sections of an overhead distribution system. Line schedules shall be in a tabulated format, summarising the details of the line. With the acquisition of frb, we gain proven expertise and many years of experience in overhead line construction. Wire runs track models from other bentley rail software can be used to create. Guidelines for the provision of electrical distribution networks in residential areas. Overhead costs analysis lean construction institute.
These standards ensure meeting of ergon energys requirements. Chapter iv system planning, design, construction, and protection nei electric power engineering page iv3 figure iv2 common hframe transmission line construction. Cross sections with cantilever and cross span construction. The fundamentals of overhead transmission line design course from siemens power academy td provides participants with a fundamental understanding of the electrical and mechanical design of ac 69765 kv transmission lines in ptec 500 participants gain an understanding of the overhead line theory and application, including planning, design, construction, operation and maintenance. Starting from 1967 in russia, and also in the usa and canada, overhead lines for voltage of. With the introduction of aluminum conductor, the vulnerability to damage increased due to its easily abraded surface. For overhead electric line construction california. Roads figure 14 and sidewalks are resurfaced to meet traffic standards for access and loading. More over, a deeper study about these parameters is undertaken here, by varying the frequency and the conduc.
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