When the space available for the installation of the substation is short or when the environmental conditions are extremely severe the usual solution is to install a gis gas insulated substation, which schematic diagram is shown in figure 3. It is hyosungss strength to supply highquality products at a competitive price. The main function of the substation is to collect the energy transmitted at high voltage from the generating station and then reduce the voltage to an appropriate value for local distribution and gives facilities for switching. The single line diagram makes the system easy and it provides the facilitates reading of the electrical supply and connection. The probability of a fault during circuit breaker maintenance. For use in affordable air insulated substations, hgis technology. Siemens is a leading supplier of engineering, equipment, solutions, and services for highvoltage substations, such as air insulated substations, gas insulated substations, and gas insulated lines. For scoping cost estimates, the line length is determined by a misocreated proxy route based upon a desktop study. A switchgear may be a simple openair isolator switch or it may be insulated by some other substance. 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. Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a. Power flow analysis of 230110 kv substation using etap. The sf6 gas pressure in a circuit breaker is around 0. Gasinsulated metalenclosed switchgear for rated voltages above 52 kv 092011 orequired leakage rate gas compartment tt f th td i 01% t t.
Single bus substation this is the one line of a single bus substation fed by a single radial subtransaission line. Ge provides a full range of gasinsulated substations gis for utilities and industries worldwide. Single source, single feeder substation the one line diagram of a single source, single feeder substation with the minimum equipment used. Siemens provides a wide range of services including the supply of complete packages of highvoltage. Gas insulated substation free download as pdf file. Fuji electric as a manufacturer of comprehensive substation equipment is ready to supply advanced sf6 gas insulated switchgear gis superior in. Line bay with cable connection b65 gas insulated substation 3 single busbar with longitudinal disconnectors 2 line bay with sf6air bushing bay width. Product brochure gasinsulated switchgear type elk3 gis. Operation and maintenance of a gas insulated substation. Electrical transmission and distribution system an. Other common types are oil or vacuum insulated switchgear. Gis there are two terms presented in iec gas insulated switchgear and ieee gas insulated substations. The single line diagram of an 11 kv substation is shown in the figure below. Gas insulated substation gis versus air insulated substation ais eep.
I will provide a single line diagram for the electrical transmission and distribution system by a. 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. Product brochure gasinsulated switchgear type elk3 gis for maximum performance, 420 kv. Distribution substations michigan technological university. Other single line diagrams standalone control cubicles specific layouts b65 gas insulated substation transformer bay coupling bay. An ais unit is basically a conventional switchgear technology where air is used as a primary dielectric for insulation. Single line diagram 33kv11kv substation this is the easy way to understand the working of substation. The design is based on the proven 3pole type of the 8da108db10 switchgear for distribution network operators and. The primary switch must be able to break the transformer excitation current. Electrical design of 233kv substation line diagram. It consist of a single insulated busbar in air read more. Extreme low emissions protect the environment stateo eart design gas compartment axial direction.
The 11 kv switchgear must be of the metal clad type suitable for indoor installation as per attached single line diagram. Transmission line standards aerial patrol warning signs and marker ball marking diagrams. Plan and elevation views of each type of configuration can be found in the appendix. Single line diagram 33kv11kv substation this is the easy way to understand the working of. With gis experience spanning 50 years across a wide range of industries and applications, ge is a leader in the.
Single line diagram of 11kv substation substation provides the energy supply for the local area in which the line is located. We have expertise in providing substation engineering packages for both utility and private customers including electrical protection and control, physical substation design, structural and civil. Gis is now in widespread use in the electrical power industry, especially in metropolitan areas. The circuit breaker is the most critical part of a gas insulated substation system. Drawing for landscape architecture sketch to screen to site pdf without landscape architecture concept drawings. They may only be used in the scope of the specified standards and the appropriate switchgearspecific technical data. Continuous technological and design improvements of all the components during the course of the time are characterized by appreciable savings in area and volume occupied by the substation. Substation standards switching diagram operating numbers bus configuration 6. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist. The ergon energy design philosophy is to provide substations. The steel pole structures are default structures for miso project cost estimation process unless otherwise noted in the project scope definition. Sf6 gas insulated switchgear type sdf for 170 kv 06b1e0001 gate city ohsaki, east tower, 112, osaki 1chome, shinagawaku, tokyo 1410032, japan. Major components you can spot while looking at hvehv gis.
B substation standards switching diagram operating numbers bus configuration. In this gis or gas insulated switchgear system than one functional element are encapsulate in a single metal enclosure. This type of connection is commonly employed at the substation. Hyosung gis series gas insulated switchgear to meet various requirements for substations, hyosung designs and manufactures a wide range of sf6 gis system. Single line diagram gas compartment physical arrangement of components facilities for dismantling design of partitions provisions for onsite. Typical application 145kv hybrid gas insulated switchgear center line of external wall center line of lightning arrester center line of voltage transformer center line of structure. Abb substations with gas insulated switchgear gis are unmatched when it comes to compactness, reliability, efficiency and safety, ensuring maximum power availability for. Iec 62271203 highvoltage switchgear and controlgear part 203. The circuit breaker in a gas insulated system is metalclad and utilises sf6 gas, both for insulation and fault interruption. Lsis who has been a leader in electricity and automation.
The earth switch is the smallest module of a gas insulated substation system. Presented paper refers to service continuity of gas insulated substations, a topic which is also dealt in annex f of iec international standard no. The working of the electrical equipment used in the substation is explained below in details. 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. Typical schematic diagram for alternating current ac transmission and distribution.
Single line diagram 33kv11kv substation in hindi youtube. Oneline diagram oneline diagram oneline diagram mainfeeder 2,000a600a 2,620 600 600 720 1,350 2,500 side view front view bus section 2,000a 2,620 600 600 720 1,350 2,500 side view front view bus tie2,000a 2,620 600 720 1,350 2,500 main feeder circuit bus section circuit bus tie circuit ls sf6 gas insulated switchgear 9. Abstract the thesis deals with the analysis of construction of power lines and substation switchyard of 3311 kv. Pdf power flow analysis of 230110 kv substation using etap. The portfolio includes gis solutions from 60 to 800 kv, along with secondary products to maximize switchgear and network operation.
It may also let in protective relays if defined by the user. It will conclude with a cost comparison of each configuration. Moving contact system mounted on the enclosure of the main module and aligned to the fixed contact. Stardelta transformer connection is commonly employed for power supply transformers. A bypass switch is provided so service can continue during circuit breaker maintenance. Development of 22kv distribution systems and switchgear. For example, in some design, a three phase circuit breaker, current transformer, earth switches, even other feeder elements are covered together in a single metal capsule. The single and double circuit wood pole structures are included in the guide to address some of the project specific need involving wood pole construction.
The circuit breaker is directly connected to either current transformers or the isolators in gas. Ac traction power supply rail electrification siemens. Single line diagram maine buses desktop design projects desk blue prints busses. Typical bus configurations single bus figure 2 shows the one line diagram of a single bus substation.
Each feeder must has its own overcurrent protection. Our technical team has expertise in all aspects of substation design through 345kv for both open air substations and gas insulated substations. Operation of a gis substation involves the same principles as operati ng an. Both ais and gis installations use circuit breakers, disconnect switches isolators, and earthing switches, and have different means of showing their status, either opened or closed. This equipment is a compact multicomponent assembly, enclosed in a ground metallic housing, which the primary insulation medium is a compressed gas. Single phase enwrapped gas insulated switchgear to switchgear witrelates h each.
Scholar, electrical and electronics engineering department, aisect university bhopal, mp, india. Fixed contact, which is located at the live bus conductor and which forms a part of the main gas insulated system. Cables or gas insulated lines or bus gil, gib substation layout outdoor substation. Development of 22 kv distribution systems and switchgear 160 conductor for connecting to the cable head at the bottom of the molded case, a current transformer for metering that is built into the epoxy molded insulated housing, a condenser for voltage detection, and three for three phases fourposition vacuum switches. Sulphur hexaflouride sf6 gas the primary insulating medium. This 30% line length adder is intended to account for routing constraints that will be determined upon further development of the potential transmission line project. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Sf6 gas superior dielectric properties used at moderate pressure for phase to phase and phase to ground insulation preferred for voltage ratings of 72. Eep electrical engineering portal energy and power for all. The transformer may have differential relaying that trips all of the feeder breakers in the event of. Gas insulated substation transformer electrical substation. The sitras 8da11 1pole and sitras 8da12 2pole gas insulated switchgears are used for feeding the overhead contact line in ac traction power supply systems. In general, it was connected to the transmission system by looping, single.
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