Practical and theoretical aspects are handled by acknowledged gis experts who have been involved with the technology from the start. Sf6 gas superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation preferred for voltage ratings of 72. Economics between conventional and gas insulated substation. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate gas insulated substation engineering ieee foothill society pes chapter and ieee pes student chapter, cal poly pomona are pleased to sponsor a talk on the topic, an overview of gis substation engineering, by mr. Comparison of gis and ais systems for urban supply networks. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a minimum of cost. Ieee pes substations committee gasinsulated substations. Lowlow circuit breaker operating mechanism pressure meaning that the circuit breaker can. Gas insulated substation free download as powerpoint presentation. There are five major considerations in the differences between the two high voltage. Reference manual emtp theory book, bonneville power.
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 uses sulfur hexafluoride sf6 gas which has a superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation. Toshibas gas insulated substation gis is a compact and highly economical substation solution for electric utilities, commercial, and industrial applications in densely populated cities. 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. Gis highvoltage gas insulated switchgear substations. Power substation guides, research papers and studies 3 eep. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage transformers are in sf6 gas inside grounded metal enclosures. Abb gasinsulated switchgear elk4, 800 kv 3 abb and 50 years of gasinsulated switchgear gis innovation abb offers a wide range of highvoltage products up to 1200 kv kilovolt that help enhance the reliability, efficiency and quality of power in transmission and distribution grids, power plants and industries while minimizing environmental. Presented paper refers to service continuity of gas insulated substations, a topic which is also dealt in annex f of iec international standard no. Product brochure gasinsulated switchgear elk4, 800 kv. The 20 chapters are written for engineers and present full overviews of each topic, with lists of. Sulphur hexaflouride sf6 gas the primary insulating medium.
Very fast transient over voltage vfto is a unique electromagnetic transient phenomenon occurring in gas insulated substation gis, which determines the. This substation is a switching substation of a pump storage power plant situated in a mountainous region in the north of iran and because of the geographical constraints of the substation site location and the special arrangement of gasinsulated bus ducts and components, the necessity of the. 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 equipment used in the high voltage substation in densely cities. Gasinsulated substation provides a solution to the space problem. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space. Insulation coordination for uhv gas insulated substation ijert. Gas insulated substation electrical substation insulator.
Recently, ac gis ratings have reached up to 1,100 kv rated voltage and. In gas insulated medium voltage switchgear, vacuum technology is used as interrupting purpose and sf 6 gas is used as. There are five major considerations in the differences between the two high voltage substations. Energy sector power transmission high voltage substations. In this type of switchgear, all the necessary components of switchgear can be assembled in very limited space. Some of the failures are due to the presence of metallic particles inside the gis compartment. Ieee std 8371989 eee standards ieee standards substations. Very fast transient over voltage vfto is a unique electromagnetic transient phenomenon occurring in gas insulated substation gis, which determines the insulation level of the gis above 330 kv. Gis technology originated in japan, where there was a substantial need to develop technology to make substations as compact as possible. Substation project basic concepts process starts with a need. A gas insulated substation gis uses a superior dielectric gas, sf6, at moderate pressure for phasetophase and phasetoground insulation. Lsis who has been a leader in electricity and automation.
This guide is primarily concerned with outdoor ac substations, either conventional or gasinsulated. Estimation of transient over voltages in gas insulated. Distribution, transmission, and generating plant substations are included. Iec 62271203 highvoltage switchgear and controlgear part 203. Power substation guides, research papers and studies 3. Gas insulated substation provides a solution to the space problem. Gas insulated substation authorstream presentation. 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. Reliable and economical power transmission and distribution are key functions for the future electric power supply.
Combined with a significantly reduced footprint and sf6 gas insulation, toshiba gis can operate in unconventional indoor spaces while maintaining its. Operation and maintenance of a gas insulated substation. Insulation coordination for uhv gas insulated substation written by vaibhav aaradhi, prof. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. Gasinsulated substation article about gasinsulated. 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.
In order to determine the particle trajectories in a gib, an inner diameter of 55 mm and outer enclosure diameter of 152 mm were considered. This guide is primarily concerned with outdoor ac substations, either conventional or gas insulated. Gas insulated substations transmission distribution systems. Gas insulated substation gis advantages disadvantages. Gas insulated transformer use sf6 gas as the insulating and cooling medium instead of insulating oil. 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.
Gis there are two terms presented in iec gas insulated switchgear and ieee gas insulated substations. For dc gis, the experience of longterm performance is limited today. Ieee pes substations committee gasinsulated substations committee k0. 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. In gas insulated substation the highvoltage conductors, circuit breaker interrupters, switches, current transformers, voltage transformers and lightning arresters. Presented paper refers to service continuity of gasinsulated substations, a topic which is also dealt in annex f of iec international standard no. Analysis of effective factors on transient ground potential.
Then, a long shortterm memory lstm network is utilized for fusing the embedded multisensor information. Urban supply systems combining gis technology and hv cable are safe, reliable and environmentally benign. 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 equipment used. Siemens gis, cable bay with double busbar system including 2 bb ds, 1 line ds, 1 cb, 3 es. Record of the the 2002 ieee international symposium on electrical insulation cat. With proper caution, the methods described herein are also applicable to indoor portions of such substations, or to substations that are wholly indoors. Ge provides a full range of gas insulated substations gis for utilities and industries worldwide. Contents introduction conventional substation ais limitation of ais need for gis introduction to gis gis unique features components of gis substation advantages of gis over conventional open air. 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. Ieee guide for safety in ac substation grounding sponsored by the substations committee ieee 3 park avenue new york, ny 100165997 usa ieee power and energy society ieee std 8020 revision of ieee std 802000 incorporates ieee std 8020cor 12015 authorized licensed use limited to. The substations committee is one of the technical committees under the direction of the technical council of the ieee power and energy society. 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. Scott will work on development of a scope for approval at the 2015 substation committee meeting, may 1721 in minneapolis. Pdf in the last two decades, the evolutionary development of.
This guide establishes typical dimensions for connections of a gas insulated substation gis to extruded, self contained fluidfilled, and high pressure fluidfilled pipetype cables in single and three phase arrangements for voltages 72. Modeling and analysis of a 3phase 2kv gas insulated. Pdf technology progress in highvoltage gasinsulated substations. Contents introduction conventional substation ais limitation of ais need for gis introduction to gis gis unique features components of gis substation advantages of gis over conventional open air substation disadvantage of gis next presentation work. Ieee std 8372002 revision of ieee std 8371989 i eee standards 837tm ieee standard for qualifying permanent connections used in substation grounding published by the institute of electrical and electronics engineers, inc. Five differences between air insulated substations and gas. Download citation gas insulated substation gis gis technology is typically of modular. 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. Gis is now in widespread use in the electrical power industry, especially in metropolitan areas. Partial discharge analysis in hvdc gis gas insulated substations gas insulated substations gis respond to the expansion of the grid as well as the scarcity of available locations to build substations.
Big data mining and analytics in substation automation and network management. Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide. Jan 02, 2014 gas insulated substation uses sulfur hexafluoride sf6 gas which has a superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation. 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. Gas insulated substations transmission distribution. Overview of development, design, testing and application of. Jan 02, 2019 the substation, assembled by gas insulated switchgear, is popularly known as gas insulated metal enclosed substation gimes. 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. P1783 has been accepted as a new ieee standard june 2009. Gas insulated substation gis ieee conference publication. Gas insulated substations gis are widely used as important switchgear equipment because of its highly reliable, low space requirement, the risk factor is low and easy to maintenance, yet some failures have been reported.
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 substation market 2025 by types, application. Gas insulated substations have a grounded outer sheath enclosing the high voltage inner conductor unlike conventional equipment whose closest ground is the earth surface34. No attempt is made to cover the grounding problems peculiar to. A typical gas insulated substation is shown in fig. Pd test in gas insulated substation using uhf method ieee. The present invention relates to a device for monitoring a gas insulated highvoltage substation by measuring partial discharges, including an enclosure 11.
At present, the use of gas insulated substations gis in the power industry is. Gas insulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate gas compartment tt f th td i 01% t t. Extreme low emissions protect the environment stateo eart design gas compartment axial direction. The substations committee is the professional home for all engineers involved in the design and operation of generation, transmission and distribution substations. Tom antonucci for the benefit of ieee, particularly the student members, with an interest to power systems.
High temperature conductor effects on ceramic and nonceramic insulator performance tf 15. The basic insulation level bil required for a gas insulated substation gis is. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. Since gis substation require long term outages before repairs can be made. The present invention relates to a device for monitoring a gasinsulated highvoltage substation by measuring partial discharges, including an enclosure 11.
Lsis who has been a leader in electricity and automation in. Substations, ieee pes special publication modeling and. Kushare published on 20140501 download full article with reference data and citations. Practical and theoretical aspects are handled by acknowledged gis experts who have been involved with the technology from the. Ges f35 gis is a fieldproven solution with high availability that meets the challenges of networks up to 170 kv for power generation, transmission, distribution, tertiary and heavy industry applications. Evaluation of gas insulated substations and circuit breakers using. Gas insulated substation how is gas insulated substation. It is ideal in dense urban areas where land for new facilities is limited and only available at prohibitive cost. If the switchgear is sold to new owners, they must receive this document along with the. 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. Jack varner, southern company, 4046085593, forest park, ga, 30297 usa. The differences between air insulated substation engineering and gas insulated substation engineering are vast. This problem can be solved by using gas insulated switchgear technology.
1046 863 551 1372 166 351 716 302 616 1031 438 776 792 482 431 332 361 68 116 268 1446 1135 198 787 440 382 1089 473 1264 684 56 1040 1518 344 231 595 75 1332 1303 1411 1434 747 1189