Compass compact prefabricated air insulated substation. In comparison, a conventional ais or airinsulated substation, uses atmospheric air. What structural engineers should know about substation rigid bus design. Insulation level and clearances for 230 kv air insulated. Download gis gas insulated substations by hermann koch pdf. Ais airinsulated substation berc bangladesh energy regulatory commission dc double circuit dpp development project proposal emp environmental management plan epc engineering, procurement, and construction erp enterprise resource planning fma financial management assessment fy fiscal year. 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. Five differences between air insulated substations and gas. This paper analyzes the insulation level and air clearances of 230 kv air insulated substation.
There are six types of substation busswitching arrangements commonly used in air insulated substations. Ieee 6052008 ieee guide for bus design in air insulated. The metalenclosed gas insulated switchgear inherently follows the criteria for new substation design and offers a higher reliability and flexibility than other solutions. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the. Arrangement of the switching devices will impact maintenance, protection, initial substation development, and cost. Specification and selection of main components for airinsulated. Preparing for the smart grid evolution the air insulated substation, with a capacity of 220 kilovolt kv, was deployed by abb in 2008. The 21st century substation design power systems engineering. Select ing the best qualified circuit configuration and the appropriate switchgear layout is especially important.
Is that the highvoltage current carrying parts are within a metal enclosure and are held in a concentric configuration by cast epoxy spacer. Insulation coordination for uhv gas insulated substation. The product range includes air insulated and gas insulated panels with a choice of gas or vacuum circuit breakers. The air insulated substation dissected plh group inc. This presentation includes definitions of the various physical areas making up a power station, an airinsulated substation, or a gasinsulated substation. There are five major considerations in the differences between the two high voltage. Substation engineering ais and gis substations beta. Gis substations use sf6 gas that reduces the distance needed between active and nonactive switchgear parts, resulting in smaller overall space requirements. Gis substation also offers unique advantages over air insulated applications. In 2008, usco was acquired by hubbell power systems, inc. Pdf electric power substations engineering by john d. Kushare published on 20140501 download full article with reference data and citations. Optimising reliability with airinsulated switchgear.
So air insulation is not 100% accurate but the majority of space around the center conductor is in fact air. Sep 29, 2009 various factors affect the reliability of a substation, one of which is the arrangement of the switching devices. Pdf performance of compact air insulated substations under. A proper design of the substation bus ensures a safe and reliable operation of the substation and the power system. Due to its enclosed construction, gas insulated substation is operable under. The air insulated substation dissected posted at 22. A direct comparison of the component investment for identical switchgear configurations suggests that the gis variant is more costly than the air insulated switchgear ais solution. The 245kv breakers were the worlds first of its kind to switch a shortcircuit current of 80 ka. 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. Insulation coordination for uhv gas insulated substation written by vaibhav aaradhi, prof. Ieee 6052008 ieee guide for bus design in air insulated substations.
Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide. The main differences between ais airinsulated switchgear and gis gasinsulated switchgear can be summarized as in attached document, the technology selection remains affected by economic considerations and local habits on a projectsolution level. We know the work, greenfield or retrofit, air insulated or gas insulated. 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. In order to get the bil, the crest voltage at any equipment are required. We have experience with the major vendors, engineering. As the demand for electrical power grows, power companies worldwide are active to.
Gas insulated substation gis vs air insulated substation. Sub stationsair insulated substations linkedin slideshare. A direct comparison of the component investment for identical switchgear configurations suggests that the gis variant is more costly than the airinsulated switchgear ais solution. Airinsulated switchgear gives you the advantages of. Cpc asserts that these changes would allow it to increase the power generating capacity of the updated project by roughly 50 percent while maintaining co. Substation frame, stand or polemounted, the horizon compact can be integrated into the most advanced distribution schemes or operate as a. Download electric power substations engineering by john d. 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. Gas insulated substation installation cedengineering. Operation and maintenance of a gas insulated substation. What structural engineers should know about substation. 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. All rus borrowers rus electric staff effective date.
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 57 xflow 121 and 122 index. It is suitable for both indoor and outdoor applications. Figure1, 2 and 3 are reproduced from the documents prepared by sprecher energie. A gas insulated substation due to its modular construction and compact nature is a viable alternative to the conventional air insulated substation. Providing power to the customer has become an increasingly challenging task for system operators. Mar 18, 2014 sub stationsair insulated substations 1. Fully iec certified with testing done in kema and iph test labs in accordance to iec 62271100 and iec 62271200. Mukherjee interface between automation and the substation, j. The clearance required for phase to phase and phase to ground for all equipment is. Bolin airinsulated substationsbusswitching configurations, m. Economics between conventional and gas insulated substation. Due to the gas enclosed design, gis is the most suitable solution for indoor and underground substations.
Innovative in its design, ge s secogear is a compact air insulated switchgear and leads the industry in safety, reliability, performance and sustainability. Gas insulated substation authorstream presentation. Stations have ranged in size from 500 kva through 1500 mva with source voltages of 2. 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. Today, hps continues to manufacture the usco brand transmission line and substation disconnect switches and accessories. Ieee guide for bus design in air insulated substations.
Ieee 605 is a great source for substation rigid bus design. A leaking connector can allow rain to literally run into the cable and with air line cable, the water has a large area to fill. There are six types of substation bus switching arrangements commonly used in air insulated substations. 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. Iec 62271203 highvoltage switchgear and controlgear part 203. Recovery plan applied for all natural disasters if any damage has occurred to major equipment i. The firm performs switchyard and substation work through 500kv and is skilled in all aspects of gas insulted and air insulated substation construction, from clearing and grading through commissioning and testing. By applying simplified calculation method taken from ieee std. Airinsulated substations busswitching configurations. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate insulated metal enclosed switchgear metal enwrapped switchgear in which the insulation is receivedpartially, at least, by an insulating gas other than air at atmospheric pressure, as described in iec 62271 203.
A major difference between conventional air insulated substations ais and the gas insulated substations gis is that the sf6 gas insulated electrical components are placed within an earthed, pressurized metallic container. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation. 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. Urban supply systems combining gis technology and hv cable are safe, reliable and environmentally benign. Investigate general substation design considerations, including major substation components, system and space requirements, and switching arrangements explore considerations in the design process, including security of supply, operational flexibility, environmental considerations, etc. The main differences between ais air insulated switchgear and gis gas insulated switchgear can be summarized as in attached document, the technology selection remains affected by economic considerations and local habits on a projectsolution level.
Pdf environmentally friendly compact airinsulated highvoltage. Mcdonald the use of electric power substations in generation, transmission, and distribution remains one of the most challenging and exciting areas of electric power engineering. There are five major considerations in the differences between the two high voltage substations. Lightning overvoltage performance of 110 kv air insulated. Due to the gas enclosed design, gis is the most suitable.
This presentation includes definitions of the various physical areas making up a power station, an air insulated substation, or a gas insulated substation. The primary load interrupting mechanism is a threephase airinsulated load break switch that interrupts current with blades that travel in energycontrolling arc chutes. A gas insulated substationgis is a substation that uses a superior dielectric gas, sulfur hexafluoride sf6,high voltage. Open air substations one type of substation is an open air substation, which is the traditional design that uses the insulation properties of ambient air as an external insulating medium. Airinsulated substation article about airinsulated. The primary load interrupting mechanism is a threephase air insulated load break switch that interrupts current with blades that travel in energycontrolling arc chutes. Childress highvoltage power electronic substations, d. Preparing for the smart grid evolution the airinsulated substation, with a capacity of 220 kilovolt kv, was deployed by abb in 2008. Substation types include openair buswork and compact gas insulated substation designs in both urban and rural settings. The differences between air insulated substation engineering and gas insulated substation engineering are vast. Comparison of gis and ais systems for urban supply networks. 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. Ge provides a full range of gas insulated substations gis for utilities and industries worldwide. The product range comprises fixedpattern, air insulated metalclad panels with vacuum circuit breaker technology and a range of oem designed retrofit products, enabling the removal of oil and sf 6 circuit breakers from our legacy products.
Gis substation also offers unique advantages over airinsulated applications. Gasinsulated singlepole bus ducts with a total length of 2,700 meters connect the gis accommodated in the 85meterlong switchgear building with the airinsulated part of the substation. This is a significant change in operating the switchgear with circuit breakers, disconnectors, and switches earth. Nov 06, 2016 the differences between air insulated substation engineering and gas insulated substation engineering are vast. The gis equipment installation is demanding and asks for a detailed plan. In comparison, a conventional ais or air insulated substation, uses atmospheric air. This paper presents the analysis of lightning overvoltage performance of 110 kv airinsulated substation connecting hydro power plant with the rest of the power system.
Substation reduces construction times to between 3 and 6 months uses only 20% of the space required by traditional air insulated substation safe to touch and resistant to vandalism modular design facilitates rapid transport sf6 circuit breaker iec and ansi tested 30. An introduction to gas insulated electrical substations. Hello, this video is for comparing of gas insulated substation gis vs air insulated substation ais for urban and rural areas with discussion. The load break switch utilizes a stored energy spring that charges every time the switch is closed and quickly disengages the conducting blades for safe, reliable tripping. Gis with conventional air insulated substation ais. Two different types of buses are used in substations, the rigid bus and the strain cable. These substations are generally constructed in an open, nonenclosed, nonatmospherically controlled environment and can be built either outdoors or indoors. Ais airinsulated substation berc bangladesh energy regulatory commission dc double circuit dpp development project proposal emp environmental management plan epc engineering, procurement, and construction erp enterprise resource planning fma. Purpose share status on replacement of sf6 with environmentally friendly insulating gas for high voltage gis and breakers. Pdf this paper investigates the possible options for achieving a substantial reduction in a substation footprint using airinsulated switchgear. 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. The assembly of apparatus used to change some characteristice. Air insulated switchgear gives you the advantages of. Index by keyword page ais air insulated switchgears 66, 70, 72 and 73 apps advanced power protection system 44, 45, 46 and 47 arcgis geographic information system 106 atex 32 and 33 automation for substations 53, 101 brio w310 124 c264 micom compact rtu 101 circuitbreakers 63 competence management 18 cyber security 50 design of installation 43 elearning 20, 27, 28 and 39.
Airinsulated substations up to 800 kv digital asset management. Southern california public power authority awards abb order for gis substation project. Highvoltage substations highvoltage power transmission. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. This definitio n typically relates to high voltage switchgear and control gear. Various factors affect the reliability of a substation, one of which is the arrangement of the switching devices.
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