Practical and theoretical aspects are handled by acknowledged gis experts who have been involved with the technology from the start. Toshibas gas insulated substation gis is a compact and highly economical substation solution for electric utilities, commercial, and industrial applications in densely populated cities. Customer substation manual 6272019 preface page 8 of 82 010. Gas insulated substation electrical substation insulator. A gas insulated substation gis uses a superior dielectric gas, sf6, at moderate pressure for phasetophase and phasetoground insulation. There are five major considerations in the differences between the two high voltage substations. Hypact is a hybrid compact switchgear assembly composed of. The new 500220 kilovolt kv gas insulated substation will dispatch 1.
Study of gas insulated substation and its comparison with. Installation, maintenance, and end of life of a gasinsulated. One circuitbreaker with blk drive both single and threephase operation. Iec 62271203 highvoltage switchgear and controlgear part 203.
Scribd is the worlds largest social reading and publishing site. 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. 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. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate mar 18, 2014 sub stationsair insulated substations 1. Presented paper refers to service continuity of gasinsulated substations, a topic which is also dealt in annex f of iec international standard no. Gasinsulated substation article about gasinsulated. In normal substation the clearances between the phase to phase and phase to ground is very large. Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide. Gas insulated substation gis advantages disadvantages. A gas insulated substation gis is a high voltage substation in which the major structures are contained in a sealed environment with sulfur hexafluoride gas as the insulating medium. Gas insulated substations up to 300 kv ges b105 gis is a compact, fieldproven solution with high availability that meets the challenges of networks up to 300 kv for power generation, transmission, distribution, tertiary and heavy industry applications. The substation, assembled by gas insulated switchgear, is popularly known as gas insulated metal enclosed substation gimes. 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 ownership issues. Several crucial terms are for better understanding of the presented material.
The metalenclosed gas insulated switchgear is made as to ensure the best possible relationship between design, used materials, maintenance effort and maintenance intervals. Gis highvoltage gas insulated switchgear substations. Best practices and considerations wednesday, january 31, 2018 featuring a waterfront substation site visit tuesday, january 30, 2018. National grid substations technical specification ngts 2. A switchgear may be a simple openair isolator switch or it may be insulated by some other substance. Hello, this video is for comparing of gas insulated substation gis vs air insulated substation ais for urban and rural areas with discussion of each individual substation component. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage transformers are in sf6 gas inside grounded metal enclosures. Economics between conventional and gas insulated substation. 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. Combined with a significantly reduced footprint and sf6 gas insulation, toshiba gis can operate in unconventional indoor spaces while maintaining its. Other common types are oil or vacuum insulated switchgear.
Supply in the package materials have been classified as under i. Gasinsulated switchgear schneider electric belgique. Ge provides a full range of gas insulated substations gis for utilities and industries worldwide. Gas insulated substations gis and gas insulated lines gil are used worldwide in all voltage classes. The metalenclosed gas insulated switchgear inherently follows the criteria for new substation design and offers a higher reliability and flexibility than other solutions. Apr 30, 2018 hello, this video is for comparing of gas insulated substation gis vs air insulated substation ais for urban and rural areas with discussion of each individual substation component. Gas insulated substations transmission distribution systems. Insulated substation at the brayton point generating station in somerest, mass, with a new indoor facility he mentioned that the project will reduce future emission of sf6 gas into the environment. If the switchgear is sold to new owners, they must receive this document along with the. Practical and theoretical aspects are handled by acknowledged gis experts who have been involved with the technology from the. It requires minimum floor space and building volume. We present full edition of this ebook in txt, djvu, pdf, doc, epub formats.
Gas insulated switchgear gis general presentation abb group. Gas insulated substation gis vs air insulated substation. Gis there are two terms presented in iec gas insulated switchgear and ieee gas insulated substations. A typical gas insulated substation is shown in fig. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space. Gas insulated substation market industry analysis, share.
In this case opening of related gas compartment is necessary. The clearance required for phase to phase and phase to ground for all equipment is much lower than that required in an air insulated substation. Gas insulated substation electrical substation scribd. Gas insulated metal pdf format of all type, routine and additional test reports must be provided to. An introduction to gas insulated electrical substations. Gis is a kind of metal enclosed switchgear that means, all the equipments of the electrical switchgear are enclosed by gas tight metal enclosure and sf 6 gas is used as. In gas insulated medium voltage switchgear, vacuum technology is used as interrupting purpose and sf 6 gas is used as. Stepping down the voltage from transmission to the distribution level at the substations located near the actual consumers not only yields economic advantages, but also ensures reliable power supply. Nesco has adopted the philosophy of installing open terminal air insulated substations.
In this type of switchgear, all the necessary components of switchgear can be assembled in very limited space. In 1965 abb delivered the worlds first substation with gasinsulated switchgear gis. The basic insulation level bil required for a gas insulated substation gis is different from that of the conventional substation because of certain unique properties of the former. They will compare substation safety and security using ais vs. This problem can be solved by using gas insulated switchgear technology. This course provides an brief introductory overview of gis or gas insulated substations. Gas insulated substations are used where there is space for providing the substation is expensive in large cities and towns. Due to this, large space is required for the normal or air insulated substation ais. Substations play a crucial role in electricity distribution infrastructures as a part of the transmission and distribution systems, performing several core functions such as the transformation of voltage from high to low, or vice versa. This course is based on terms used in ieee and iec regulations. The bus bars may be of either rigid type or flexible strain type depending upon the choice of the designer considering the overall suitability and economy of the substation to be installed. Gis technology originated in japan, where there was a substantial need to develop technology to make substations as compact as possible. Guidelines for usage of air insulated substation ais or. Gas insulated substation market 2025 by types, application.
Gasinsulated substations up to 300 kv ges b105 gis is a compact, fieldproven solution with high availability that meets the challenges of networks up to 300 kv for power generation, transmission, distribution, tertiary and heavy industry applications. Gasinsulated highvoltage switchgear gis is a compact metal. Gas insulated substation free download as pdf file. High voltage products compass compact prefabricated air. It is suitable for both indoor and outdoor applications. The assembly of apparatus used to change some characteristice. Airinsulated substations up to 800 kv digital asset management. Due to its enclosed construction, gas insulated substation is operable under. Stepping down the voltage from transmission to the distribution level at the substations located near the actual consumers not only yields economic advantages, but also. The differences between air insulated substation engineering and gas insulated substation engineering are vast. These instructions for assembly are an integral part of the product and must be stored so that they are at any time readily accessible for and can be used by persons who are to work on the switchgear. This is a project decision when the gis substation that was built in the early 1970s approaches the end of its useful life national grid begins.
Sf6 gas superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation preferred for voltage ratings of 72. Siemens is a leading supplier of engineer ing, equipment, solutions, and services for highvoltage substations, such as airinsulat ed substations, gas insulated. Jan 02, 2019 the substation, assembled by gas insulated switchgear, is popularly known as gas insulated metal enclosed substation gimes. It is applicable to both openterminal air insulated ais and metalenclosed gas insulated gis substation constructions and covers equipment operated at lower voltages on the same substation site.
Due to the gas enclosed design, gis is the most suitable solution for indoor and underground substations. Gis is now in widespread use in the electrical power industry, especially in metropolitan areas. Gas insulated substations transmission distribution. Gas insulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate gas compartment tt f th td i 01% t t. Gas insulated substation free download as powerpoint presentation. Jan 02, 2014 gas insulated substations are used where there is space for providing the substation is expensive in large cities and towns. Installation, maintenance, and end of life of a gas. It is applicable to both openterminal airinsulated ais and metalenclosed gasinsulated gis substation constructions and covers equipment operated at lower voltages on the same substation site. Extreme low emissions protect the environment stateo eart design gas compartment axial direction. Sulphur hexaflouride sf6 gas the primary insulating medium. An introduction best practices and considerations monday, january 29, 2018 postconference workshop gis commissioning. Gas insulated substation definitions and basics course no.
An effective although more costly form of switchgear is the gas insulated switchgear gis, where the conductors and contacts are insulated by pressurized sulfur hexafluoride gas sf 6. 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. Gas insulated substation gis ask price shyama power provides turnkey solution for designing, sourcing, execution, testing and commissioning of gis gas insulated switchgear substations. An effective although more costly form of switchgear is the gasinsulated switchgear gis, where the conductors and contacts are insulated by pressurized sulfur hexafluoride gas sf 6. Gimes technology is not very recent invention, it is successfully running for over thirty years. With gis the footprint of substations can be reduced. A gas insulated substation gis is a high voltage substation in which the major conducting structures are contained within a sealed environment with a dielectric gas known as sf6, or sulfur hexafluoride gas as the insulating medium. Gas insulated substation authorstream presentation. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. A gas insulated substation due to its modular construction and compact nature is a viable alternative to the conventional air insulated substation. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a minimum of cost. Owners supply materials osm 3311 kv power transformers, station 330. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. Gasinsulated switchgear up to 245 kv, 50 ka, 4000 a type 8dn9.
Compass means compact prefabricated airinsulated substation and includes all the high voltage functions of a single bay in just one module. Abb is the pioneer in gis technology with over 45 years of proven technology for complex. Gas insulated substations gis are different from air insulated substations as all the substation equipment such as bus bars, circuit breakers, current transformer. This functional specification covers all types of substation with equipment installed for use on 2, 275 and 400 kv 50 hz systems. The 20 chapters are written for engineers and present full overviews of each topic, with lists of. Jan 31, 2008 conventional substations using atmospheric air as the main dielectric cannot satisfy these requirements, but totally enclosed substations using sulphur hexafluoride sf6 gas insulation that are also known as gas insulated substations gis. Gas insulated substations conference 2018 in washington dc. If you are looking for a ebook gas insulated substation design manual in pdf format, then you have come on to the loyal website.
1380 1521 405 1503 1455 512 606 1085 336 1282 1051 116 631 94 529 849 40 570 1127 989 19 1445 331 428 13 1142 460 912 853 1417 776 528 1485 64