Gas insulated transmission lines in railway galleries conference paper pdf available in ieee transactions on power delivery 202. Electrical shock occurs when the body becomes part of the electric circuit, either when an individual comes in contact with both wires of an electrical circuit, one wire of an energized circuit and the. Secondgeneration gasinsulated lines for high power transmission are the best option where environmental or structural considerations rule out the use of overhead transmission lines. With an overview on the technical, economical and environmental impact and power system implications of gil, this guide provides a complete understanding of its. By edvard authoravatar october, 17th 2012 1 comment save to pdf. May 15, 2016 gas insulated line gas insulated line invented in 1965 by massachusetts institute of technology.
This great powerpoint template showing a worker on the power transmission line will fit presentations on ways of power transmitting, electric power plants, electricity, power engineering, etc. Download this template, plus more 25 in all pure electric powerpoint templates and backgrounds. Explore gas insulated substations 220kv 2kv 66kv openings in your desired locations now. In the process of converting ores into metals, energy is added.
W elcome to free powerpoint templates design, one of the most usefull powerpoint templates resource website. Gasinsulated transmission lines gil hope for the hills. This pure electric powerpoint theme or template is mainly colored green, light. Pdf gas insulated transmission lines gil are a new technology for transmitting power over long distances. The quarter wave line provides impedance transformation upto the highest frequency at which the transmission lines are used. Azz designs and supplies the interface to any substation equipment, regardless of whether the substation interface equipment is supplied by azz or by others. Proposed scheme of pliable gas insulated transmission line and. An overhead power line is an electric power transmission line suspended by towers or utility poles. Td703 revision 6 temporary protective grounds for td.
Azz designs and supplies the interface to any substation equipment, regardless of whether the substation interface equipment is. Gasinsulated transmission lines gil is an established high voltage technology used when environmental or structural considerations restrict the use of overhead transmission lines. We provide you a fantastic collection of free powerpoint templates design that you can download for free and regulate for your personal presentations. Expertise gas insulated substations, transmission lines. Gas insulated substations is an allinclusive reference guide to gas insulated substations gis which takes account of its basic principles, technology, application, design specification, testing and. Lsis has been a leader of development of industry and best partner to improve productivity for her customers by supplying reliable and stable energy lsis is producing gis, which is one of the major.
Metals dont like being metals, they prefer remaining as ores. The transmission losses are related to the square of the transmitted current as pv i2 r i current, r resistance. This pure electric powerpoint theme or template is mainly colored. The gasinsulated transmission lines gil of the second generation are now in services since more than 2 years, with very good service experiences. Gas insulated substations 220kv 2kv 66kv jobs, 81 gas.
Best powerpoint templates download your favorites today. When the current rating is high as it is for gil e. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. In cases where overhead lines are not possible, the gil is a viable. Gas transmission lines size pressure class 2, 3, 4 class 1 offshore less than or equal to 8 inches less than 100 psig na na intervals prescribed by operator greater than 100 psig and less than 20%.
This way we can continue creating much more free templates for you. Both, the gis located in the cavern and the underground section of the outgoing line are typical applications for gas insulated power transmission installations. Gil consists aluminium conductor surrounded by mixture of n2 and sf6 inside the enclosure. Underground power transmission on highest reliability level. Distribution substations michigan technological university. Gas insulated substation authorstream presentation. Gil consists aluminium conductor surrounded by mixture of n2 and sf6 inside the. Apart from other benefits during construction and operation. Sf6 gas insulated lines a global leader in highvoltage sf6 gas insulated bus systems azzs sf 6 gas insulated transmission line gil deliver economical longdistance power transmission, with superior reliability and a longer lifecycle to reduce ownership costs. A gas insulated transmission line having an inner conductor disposed within a cylindrical outer sheath. The outstanding features of a gil system are its high transmission capacity, superior electromagnetic compatibility emc to any other trans. Gil consists of tubular aluminium conductors encased in a metallic tube that is filled.
Discovering and getting the most related and suitable powerpoint templates are as simple as few clicks. Average flow 100 ld max flow 5 lmin 7200 ld what is the maximum typical duration of this high flowrate. Deep research report on industrial insulators market size, share, trends, demand 2019 industrial insulators market by application cables and transmission lines, transformers, switchgears, bus bar, surge protection devices, and others, type ceramic, glass, and composite, voltage low voltage, medium voltage, and high voltage, enduser utilities, industries, and others, category. Gas insulated transmission line linkedin slideshare. The input for a distribution substation is typically at least two. It is an alternative of the overhead transmission line system without affecting the. A global leader in highvoltage sf6 gas insulated bus systems. Insulation isolation the use of personal protective grounding insulation workers can insulate themselves from any possible potential difference between lines and. Gas insulated transmission line gil is a system for the transmission of high voltage electricity for long distance. Assume we have a transmission line in which air separated the two perfect conductors. A computer model of gil has been built using the electromagnetic transient program emtp to assess the suitability of gil and quantify the voltage, current. Gil consists of tubular aluminium conductors encased in a metallic tube that is filled with a mixture of nitrogen and sulphur hexafluoride gases for electrical insulation. Pdf gas insulated transmission lines in railway galleries.
A directly buried angle unit 3 is shown as an example in the middle of the figure. Beta engineering has expertise in switchyards, high voltage substations and switchyards, gis and facts. Assume the impedance of the line is 50 ohm, phase constant is 20 radm and the operating frequency is 700mhz. Find powerpoint presentations and slides using the power of, find free presentations research about gas insulated transmission line ppt. Gas insulated highvoltage switchgear gis is a compact metal encapsulated switchgear consisting of highvoltage components such as circuitbreakers and disconnectors, which can be safely operated in confined spaces. The case to be examined as an example is a gil where the. This template could be used for presentations on power, industry, electricity, the environment or sustainable power. Pdf study on the gasinsulated line equivalent model and. Connections to air insulated substations and transmission lines are easily accomplished through the use of sf 6. Evaluation of gas insulated lines gil for long distance. Gas insulated transmission lines linkedin slideshare. Electrical shock occurs when the body becomes part of the electric circuit, either when an individual comes in contact with both wires of an electrical circuit, one wire of an energized circuit and the ground, or a metallic part that has become energized by contact with an electrical conductor. High voltage utility applications including transmission system expansions, rebuilds, and specialty projects industrial substations connect industrial facilities to the high voltage grid. Customer benefit gas insulated transmission line gil for 500kv.
A spacer assembly for supporting the transmission line comprises two members which fit over the inner conductor and which together surround the inner conductor. Gas insulated transmission lines gil are a means of bulk electric power transmission at high and extra high voltage. The transmission line is a twoport circuit used to connect a generator or transmitter signal to a. The 2nd generation gil is insulated with n 2sf 6 gas mixtures and the design and laying technique is primary dedicated to long distance transmission lines. If you liked our content, please support our site helping us to spread the word. Gil systems satisfy the most stringent magnetic flux density requirements, for example, the. Thus, the design of a gas insulated transmission line is an optimization of the dielectric, ampacity and material costs. Siemens gil systems satisfy the most stringent magnetic flux density require ments, for example, the swiss limit of 1. Dynamics increasing demand for high voltage from largescale industries, metropolitan cities and also increasing numerous high voltage projects are expected to drive the global gas insulated transmission lines market during the forecast period. Earthing switch slowoperating earthing switch are used for protection purpose when work is being done in the substation, but are operated only when it is certain that the highvoltage system is not energized. Insulation isolation the use of personal protective grounding insulation workers can insulate themselves from any possible potential difference between lines and equipment, and ground using insulated rubber gloves, insulated tools, and insulated platforms liveline barehand work method.
Pdf the gasinsulated line gil is one technical solution to allow the transmission of electricity. Gas insulated line gas insulated line invented in 1965 by massachusetts institute of technology. Concept of gil g gas insulated transmission lines gil are a means for bulk power transmission at extra high voltage ehv, e. Analytical calculation of coupled magnetothermal problem in. In cases where overhead lines are not possible, the gil is a viable technical solution to bring the power transmitted by an overhead line underground without a reduction of power transmission capacity. The 2nd generation gil is insulated with n 2sf 6 gas mixtures and the design and laying technique is primary dedicated to long distance transmission.
Analytical calculation of coupled magnetothermal problem. Gasinsulated highvoltage switchgear gis is a compact metal encapsulated switchgear consisting of highvoltage components such as circuit. A spacer assembly for supporting the transmission line comprises two members which fit over the inner. Here is a template showing overhead power lines against a perfectly blue sky.
View insulator in transmission lines ppts online, safely and virusfree. A onestop, complete reference text on gas insulated substations gis, largecapacity and longdistance electricity transmission, which are of increasing importance in the power industry today details advanced and basic material, accessible for both existing gis users and those planning to adopt the technology. Azzs sf 6 gas insulated transmission line gil deliver economical longdistance power transmission, with superior reliability and a longer. Products connection of a 500kvohl to an underground gis with through a 480m deep shaft 2x240m. Transmission lines powerpoint templates w transmission. Gil system first installation in black forest as long ago as 1975 of about 4km. Secondgeneration gas insulated lines for high power transmission are the best option where environmental or structural considerations rule out the use of overhead transmission lines. A presentation on loss less transmission by gas insulated transmission line by. Gas insulated transmission lines successful underground. Gas insulated substations gis is a compact,multicomponent assembly enclosed in a ground metallic housing in which the primary insulating medium is compressed sulphur hexafluoride. The download includes a title slide thats paired with the remaining slides. Anode bare steel gas service cathode cast iron gas main electrolyte soil that main and service. The main technical data of the gil for 420kv and 550kv transmission networks are shown in table below. Gas insulated transmission lines gil provide technical, environmental and operational features which make them a very good alternative wherever the transmission of extra high voltage ehv and extra high currents ehc is needed within restricted space, e.
Apply to 81 gas insulated substations 220kv 2kv 66kv jobs on, indias no. Presentation on transmission lines insulator electricity. Transmission lines powerpoint templates w transmission lines. The increase in demand for electricity and the growing energy density in metropolitan cities have made it necessary to extend the existing high voltage network right up to the consumer. What is gil gas insulated transmission lines gil are a means for bulk power transmission at extra high voltage ehv. View and download powerpoint presentations on gas insulated transmission line ppt. Gas transmission lines size pressure class 2, 3, 4 class 1. Gas insulated transmission lines gil is an established high voltage technology used when environmental or structural considerations restrict the use of overhead transmission lines. The entire system will work at 380 kv service voltage. Environmentalfriendly gas insulating medium adapted to dc gas insulated transmission line gil electric field conditions is the key to the next generation of environmentalfriendly hvdc gils.
Earthing switch slowoperating earthing switch are used for protection purpose when work is being done in the. Presentation on transmission lines free download as powerpoint presentation. Gas insulated transmission lines gil provide technical, environmental and operational features which make them a very good alternative wherever the transmission of extra high voltage ehv and extra. The losses through the insulating gas are negligibly small. Gas insulated substation ppt pdf presentation gas insulated substations gis is a compact,multicomponent assembly enclosed in a ground metallic housing in which the primary insulating medium is compressed sulphur hexafluoride sf6 gas. What is gil gas insulated transmission lines gil are a means for bulk power transmission at extra high.
Because the picture resolution is compressed, the ppt effects please watch video. Pioneer and technology leader driving gis innovations. Lsis who has been a leader in electricity and automation. Gas insulated transmission lines gil provide technical. Very high safety requirements with regard to fire protection. The gasinsulated transmission line gil is a system for the transmission of electricity at high power ratings over long distances.
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