Operation and maintenance of a gas insulated substation. Gis with conventional air insulated substation ais. 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. Several crucial terms are for better understanding of the presented material. The 20 chapters are written for engineers and present full overviews of each topic, with lists of further references. Gis gas insulated substations by hermann koch pdf although this novel on gis is fresh, theres quite a lengthy record of how it all started. Gis technology originated in japan, where there was a substantial need to develop technology to make substations as compact as possible.
Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an introduction to typical substation components included. Faced with increasing demands for reliability, improved aesthetics and security, the adoption of gas insulated substations gis by north american utilities is rapidly increasing. A gas insulated substation gis is a substation that uses a superior dielectric gas, sulfur hexafluoride sf6, highvoltage. Gas insulated substation free download as powerpoint presentation.
The metalenclosed gas insulated switchgear is made as to ensure the best possible relationship between design, used materials, maintenance effort and maintenance intervals. Gas insulated substation gis vs conventional outdoor substation ais by engr. According to the author gis are much more reliable, compact and maintenance free. Gas insulated transformer use sf6 gas as the insulating and cooling medium instead of insulating oil. Gas insulated substation market 2025 by types, application. Companies also elect to use gis because of the increased load and limited space present in the urban areas. The differences between air insulated substation engineering and gas insulated substation engineering are vast. Presented paper refers to service continuity of gas insulated substations, a topic which is also dealt in annex f of iec international standard no. 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. Originally, and lots of decades ago, the technical prospects involved with creating gis industry criteria for ieee constructed a tutorial and introduced it in crucial ieee meetings and conventions. Best practices and considerations wednesday, january 31, 2018 featuring a waterfront substation site visit tuesday, january 30, 2018.
Iec 62271203 highvoltage switchgear and controlgear part 203. Hybrid substations abbs innovative hybrid substations combine gas and air insulated switchgear technologies to make the installation more compact, minimize maintenance requirements and maximize availability and reliability. Due to this, large space is required for the normal or air insulated substation ais. Gas insulated substation has gas monitoring system. The live parts and supported on at resin insulators. Ppt what is a substation powerpoint presentation free. Compressed gas insulated substations cgis consist basically a conductor supported on insulators inside an enclosure which is filled with sulfur hexafluoride gas sf6. Gis highvoltage gas insulated switchgear substations. Ge provides a full range of gis solutions from 60 to 800 kv for utilities and industries worldwide. The sf6 gas insulated metal enclosed switchgear shall be totally safe against inadvertent touch of any of its live constituent parts. 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. Thus, gas insulated substations giss have been widely used over the last three decades in power systems and other fields such as intelligent transportation systems, highspeed trains, and. Gis is now in widespread use in the electrical power industry, especially in metropolitan areas. Often, building new substations or increasing capacity is difficult because land is either not available or is prohibitively expensive.
Conceptual primary design drawings of 400kv gis ppt. Toshiba gits are insulated with sf 6 gas rather than traditionally hazardous oil which risks fire, explosions, and contaminating leaks. Register to view our materials and keep informed with our latest updates. Gas insulated substation provides a solution to the space problem. Often, building new substations or increasing capacity is. Welcome to toshiba international corporations download site. If the switchgear is sold to new owners, they must receive this document along with the. Abb substations with gas insulated switchgear gis are unmatched when it comes to compactness, reliability, efficiency and safety, ensuring maximum power availability for. Gas insulated substations high system reliability highflexibilityofitssolutionsmodularityexpandability gas insulated substations high flexibility of its solutions modularity, expandability compact space saving solutions innovative solutions devices, switchgears low life cycle costs reliable and competent partners operator, manufacturer. Gas insulated substations euci conference 2020 in anaheim. A gas tight barrier insulator in switchgear serve for the separation of gas compartments and prevents neighbouring switchgear parts from being affected during maintenance. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a minimum of cost. Gas insulated substation market report size, share, growth.
Select a category, choose a product family, then select from the list of available documents. 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. Highvoltage substations are power grid nodes at which power from different generating sources is pooled, distributed, transformed, and delivered to the load points. Gas insulated substation authorstream presentation. View and download powerpoint presentations on gas insulated transmission line ppt. Sf6 gas transformers transmission distribution systems. Toshibas gas insulated transformer git is the most technologically advanced solution for hydropower and underground substations, densely populated cities, mission critical substations, and offshore substations. Sf6 gas recovery 34 and 35 sm6 air insulated switchgear 70 supply transformer substation 56 and 65 transformers 56, 74 and 92 vavahvxa vacuum circuitbreakers 64 vacuum circuitbreakers 63, 64 and 68 vamp protection 81, 83, 85, 92, 98, 99 and 100 vampset 100 w310 brio 124 wi gas insulated switchgear 58 ws gas insulated switchgear. You may enter your filters below to locate manuals, brochures, software, drawings, and other important documents. View and download powerpoint presentations on earthing ppt.
The metalenclosed gas insulated switchgear inherently follows the criteria for new substation design and offers a higher reliability and flexibility than other solutions. Gasinsulated switchgear transmission products siemens global. The city is likely to get its first gas insulated substation gis by march 2016. Due to the gas enclosed design, gis is the most suitable solution for indoor and underground substations. Some of the insulators are designed as barriers between neighboring modules such that the gas does not pass through them.
With further gas leakage, the low pressure alarm is sounded or automatic tripping or lockout occurs. The company has executed two gis projects for 145kv and 33kv and the third of 220kv is scheduled for commissioning in dec 2012. Special problems in gas insulated substations gis and their. Download gis gas insulated substations by hermann koch pdf.
New gas insulated substation to improve panajis power. A major structure of the highvoltage substation will be insulated in a sealed gas environment. New substation complete secondary design of controlprotection systems and all auxiliary and telecom cubicles and interfaces. The gas insulated substation, will be the firstofitskind to be installed in the state. 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. It should be designed for indoor application with meteorological conditions at site winter 3c to 14 c and summer 31 c to 46 c, seismic zone. All rights reserved cost comparison of ais and gis substations reference. Gas insulated substation market industry analysis, share. Gas insulated substation market size, industry analysis report, regional outlook.
Scribd is the worlds largest social reading and publishing site. Primarily used in substations located in urban areas including inside buildings, underground due to safety. Gasinsulated substation article about gasinsulated. Gas insulated substation gis ask price shyama power provides turnkey solution for designing, sourcing, execution, testing and commissioning of gis gas insulated switchgear substations.
Gas insulated substations are used where there is space for providing the substation is expensive in large cities and towns. Our gasinsulated switchgear for rated voltages from 72. Ge provides a full range of gas insulated substations gis for utilities and industries worldwide. Ppt for gas insulated substation market powerpoint ppt presentation.
This cgis has fully safety constructions both single and double busbar systems that are against. 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. Gas inside each compartment should have a pressure of about 3kgcm2. 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 electrical substation scribd. The construction of gas insulated transformer is basically the as an oil insulated transformer with small difference that oil is replaced by sf6 gas. Based on purpose substation may be transmission substation, distribution substation etc. A typical gas insulated substation is shown in fig. A major difference between conventional air insulated substations ais and the gas insulated substations gis is that the sf6 gas insulated electrical. Gis there are two terms presented in iec gas insulated switchgear and ieee gas insulated substations. Transformer is indivisible component of power system and substation. The 400kv substation is being built by up power transmission corporation limited upptcl at kala. Ppt 2019 gas insulated switchgear gis market powerpoint. If the pressure drops slightly, the gas is automatically trapped up.
Gas insulated substation gis advantages disadvantages. Gas insulated substation sf6 gas gas insulated substations are high voltage substations that are compact, requiring little maintenance when compared to air insulated conventional substations. Is that the highvoltage current carrying parts are within a metal enclosure and are held in a concentric configuration by cast epoxy spacer. Lsis who has been a leader in electricity and automation in. The author in his paper has made comparison of gas insulated substation. This conference will address regulatory, technical and business considerations for gis.
All rights reserved gasinsulated switchgear gis ppt download. Gas insulated substations gis is a compact,multicomponent assembly enclosed in a ground metallic housing in which the primary insulating. Sf6 gas superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation preferred for voltage ratings of 72. The new 500220 kilovolt kv gas insulated substation will dispatch 1. Compressed gas insulated substations cgis consist basically a conductor supported on insulators inside an enclosure which is filled with sulfur. Think you know what a gas insulated substation gis is. 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. The reliability of gas insulated substations is of at most importance as any small failure can elevate to a major problem in the grid it is connected to resulting in blackouts in the power system. Installation, maintenance, and end of life of a gasinsulated. Riaz ahsan baig year of publication 2004 0 abstract the author in his paper has made comparison of gas insulated substation gis with conventional air insulated substation ais. Is that the highvoltage current carrying parts are within a metal enclosure and are held in a concentric configuration by cast epoxy spacer insulators.
An introduction best practices and considerations monday, january 29, 2018 postconference workshop gis commissioning. We offer a wide range of gas and vacuuminsulated switchgear for all types of requirements reliable. The remaining substations in the hv cable ring, which are also located in the city center, are htype transformer substations with a bustie. Gas insulated substation gis or gas insulated busduct gib. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. Gas insulated substation gis market 2018 segmentation and analysis by recent trends, development and growth to know more. The size of gas insulated substation is significantly small compared to conventional substation because a high electronegative property of sf6 gas b high dielectric property of sf6 gas c high insulation property of sf6 gas d all the above. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a. 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. There are five major considerations in the differences between the two high voltage substations.
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. Gis gas insulated switchgear gis standards iec 62271203. The portfolio includes gis solutions from 60 to 800 kv, along with hybrid, mobile and digital gis solutions, gas insulated lines and other secondary products to maximize switchgear and network. For the global gas insulated substation market, the high voltage transmitting gas insulated substations are most widely used gis across the globe owing to the various advantages. Ppt ppt for gas insulated substation market powerpoint.
In normal substation the clearances between the phase to phase and phase to ground is very large. Hsx is indoor type of cgis for 36kv primary substation. Find powerpoint presentations and slides using the power of, find free presentations research about earthing ppt. A gas insulated substation gis is a substation that uses a superior dielectric gas, sulfur hexafluoride sf6,high voltage. Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate gas insulated substation gis market 2018 segmentation and analysis by recent trends, development and growth to know more.
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. Gasinsulated substation in gzb by march noida news times. Lsis who has been a leader in electricity and automation. Sulphur hexaflouride sf6 gas the primary insulating medium. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. Comparison of gis and ais systems for urban supply networks. Find powerpoint presentations and slides using the power of, find free presentations research about gas insulated transmission line ppt. 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. It is ideal in dense urban areas where land for new facilities is limited and only available at prohibitive cost. Jan 26, 2018 gas insulated sub station grid ludhiana duration. In gas insulated substation the highvoltage conductors, circuit breaker interrupters, switches, current transformers, voltage transformers and lightning arresters. 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.
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