Gis highvoltage gas insulated switchgear substations. Iec 62271203 highvoltage switchgear and controlgear part 203. 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. Best practices and considerations wednesday, january 31, 2018 featuring a waterfront substation site visit tuesday, january 30, 2018. Click on the link below to download gas insulated substation ppt. Gis with conventional air insulated substation ais. Gas insulated substation market size, industry analysis report, regional outlook u. Ge designs, manufactures, installs and services a full range of stateoftheart gas insulated substations gis for utilities and industries worldwide. External, removable links in the earthing switches are required to disconnect a. 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.
Jan 02, 2019 this problem can be solved by using gas insulated switchgear technology. Other common types are oil or vacuum insulated switchgear. Lsis who has been a leader in electricity and automation. In gas insulated substation the highvoltage conductors, circuit breaker interrupters, switches, current transformers, voltage transformers and lightning arresters. According to the author gis are much more reliable, compact and maintenance free. Gas insulated substation gis market 2018 segmentation and analysis by recent trends, development and growth to know more. In this type of switchgear, all the necessary components of switchgear can be assembled in very limited space. The portfolio includes gis solutions from 60 to 800 kv, along with hybrid, mobile and digital gis solutions, gasinsulated lines and other secondary products to maximize switchgear and network. Gis technology originated in japan, where there was a substantial need to develop technology to make substations as compact as possible. Mv gas insulated switchgear for primary distribution suitable for indoor installations up to 36 kv. This presentation includes definitions of the various physical areas making up a power station, an airinsulated substation, or a gasinsulated substation. Medium voltage iec gas insulated primary switchgear gis zx0. The 400kv substation is being built by up power transmission corporation limited upptcl at kala.
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 city is likely to get its first gasinsulated substation gis by march 2016. Ppt on substation equipments authorstream presentation. Gasinsulated substation in gzb by march noida news. Xiangan torch gis substation in xiamen, china 145 kv compact gis provides reliable power supply to xiamen torch hitech industrial development zone abbs new generation 145 kv kilovolt gasinsulated switchgear gis is playing a key role in enhancing the power reliability in xiamen torch hightech industrial development zone. The present invention relates to a device for monitoring a gasinsulated highvoltage substation by measuring partial discharges, including an enclosure 11. Gas insulated substation free download as powerpoint presentation. Superior contact systems for circuit breakers and disconnectors. Airinsulated substation article about airinsulated. 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. Current transformer when current in a circuit is too high to directly apply to measuring instruments, a current transformer is used. Ageing of the system impact on planning of the working. The design of the gas insulated switchgears can significantly vary from isolated. Due to the gas enclosed design, gis is the most suitable.
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 insulation between live parts of the. Jan 26, 2018 gas insulated sub station grid ludhiana duration. Gasinsulated substations gis have been used in power systems over the last three decades because of their high reliability, easy maintenance, small ground space requirement, etc. Gas insulated substation gis or gas insulated busduct gib. For voltages up to 8kv, the pipe can be filled with dry nitrogen gas highpressure gas filled, hpgf, though synthetic. Is that the highvoltage current carrying parts are within a metal enclosure and are held in a concentric configuration by cast epoxy spacer.
Gas insulated substations conference 2018 in washington dc. This problem can be solved by using gas insulated switchgear technology. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a minimum of cost. Installation, maintenance, and end of life of a gas. A gas insulated substation gis uses a superior dielectric gas, sf6, at moderate pressure for phasetophase and phasetoground insulation. For voltages up to 8kv, the pipe can be filled with dry nitrogen gas highpressure gasfilled, hpgf, though synthetic. A gas insulated substation gis is a substation that uses a superior dielectric gas, sulfur hexafluoride sf6,high voltage. 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. Presented paper refers to service continuity of gas insulated substations, a topic which is also dealt in annex f of iec international standard no. 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. Certain of these are of more interest to the manufacturer while the others are of more interest to the user. The metalenclosed gas insulated switchgear inherently follows the criteria for new substation design and offers a higher reliability and flexibility than other solutions.
Gas insulated substation electrical substation scribd. There are different types of gas insulated metal enclosed switchgears available depending upon their constructional feature. Sulphur hexaflouride sf6 gas the primary insulating medium. Three phase encapsulated type sf6 gas insulated switchgear.
The differences between air insulated substation engineering and gas insulated substation engineering are vast. Introduction to gas insulated substations switchgears gis. Ge provides a full range of gis solutions from 60 to 800 kv for utilities and industries worldwide. 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. 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. Gis is now in widespread use in the electrical power industry, especially in metropolitan areas. Electric distribution substation powerpoint templates w. Voltage primary gasinsulated switchgear english pdf presentation. Gas insulated substation gis advantages disadvantages. Ge designs, manufactures, installs and services a full range of stateoftheart gasinsulated substations gis for utilities and industries worldwide. Presented paper refers to service continuity of gasinsulated substations, a topic which is also dealt in annex f of iec international standard no. Highvoltage substations are power grid nodes at which power from different generating sources is pooled, distributed, transformed, and delivered to the load points. Flow chart for the hooke and jeeves direct search method.
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 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. The sf6 gas filled disconnectorbus chamber is sealed off from the adjacent bays by gastight and arcproof disconnectors. Gas insulated substation market size, industry analysis report, regional outlook.
Gasinsulated highvoltage switchgear gis is a compact metal encapsulated. 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. 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. Think you know what a gas insulated substation gis is. A cathodic protection system is important to further protect the pipe from corrosion.
They will compare substation safety and security using ais vs. Gas insulated substation market industry analysis, share. A switchgear may be a simple openair isolator switch or it may be insulated by some other substance. Use custom search function to get better results from our thousands of pages use for compulsory search eg.
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. Special problems in gas insulated substations gis and. Gas insulated substation market 2025 by types, application. Ppt for gas insulated substation market powerpoint ppt presentation. Gas insulated substation definitions and basics course no. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. Pdf optimal sparing for sf6 gas insulated substations. A similar insulator seals off this chamber from the circuit breaker. 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. As vacuum technology is not available for high voltage, so for gis or gas insulated switchgear system above 72. Preparing for the smart grid evolution the airinsulated substation, with a capacity of 220 kilovolt kv, was deployed by abb in 2008. Reference for abb gis 145 kv xiangan torch substation. 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.
Gas insulated transformer use sf6 gas as the insulating and cooling medium instead of insulating oil. Gasinsulated substation article about gasinsulated. Primarily used in substations located in urban areas including inside buildings, underground due to safety. A gas insulated substationgis is a substation that uses a superior dielectric gas, sulfur hexafluoride sf6,high voltage. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage transformers are in sf6 gas inside grounded metal enclosures. 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. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate 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. There are five major considerations in the differences between the two high voltage substations.
Operation and maintenance of a gas insulated substation. 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. This book provides an overview on the particular development steps of gas insulated highvoltage switchgear, and is based on the information given with the. Due to the gas enclosed design, gis is the most suitable solution for indoor and underground substations. The city is likely to get its first gas insulated substation gis by march 2016. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a. 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. 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. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. Ge provides a full range of gas insulated substations gis for utilities and industries worldwide. This property makes it possible to significantly reduce the size of electrical gear.
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