Purpose this manual contains a generalized overview of the fundamentals of transformer theory and operation. Concept for sf6free transmission and distribution of electrical energy. This article is an introduction to gasinsulated substations. Sf6 gas insulated transformer are designed to ideally satisfy non flammabilityensuring plans of power receptiontransformation system installed in urban facilities. Download full seminar report on electrical engineering in doc, pdf or ppt format. It consists, in its simplest form, of two or more coils of insulated wire wound on a laminated steel core. As such it is desirable to perform various preventative maintenance activities to ensure the transformer maintains a high level of performance and a long functional life. A study on gas insulated substation with reference to 22033kv. In partial fulfillment for the award of the degree of. Seminar on gas insulated substation linkedin slideshare. Gas insulated substation uses sulfur hexafluoride sf6 gas which has a. Acknowledgements this is the final report for the power systems engineering research. Sf 6 gas found its use in china as an insulating medium in 1971 when xian high voltage switchgear research institute developed the first chinese gis rated 110kv for a hydroelectric power station. Comparison between gas insulated transformers and oilimpregnated transformers item gas insulated transformer oil immerged transformer safety combustibility sf6 gas is nonflammable mineral oil is inflammable explosiveness sf6 gas is non explosive involves possibility of combustionexplosion cleanness gas leakage does not contaminate environment oil leakage preventing.
If the switchgear is sold to new owners, they must receive this document along with the. Moisture in insulation residual moisture from manufacturing process. Is that the highvoltage current carrying parts are within a metal enclosure and are held in a concentric configuration by cast epoxy spacer insulators. The gasinsulated substation market is projected to grow at a cagr of 9. Click here to see all our transmission and distribution products other products. Department of the interior bureau of reclamation technical service center. Product information dissolved gas analysis and supervision. Seminar report on electrical engineering seminar topics. This paper investigates sf6gasinsulated transformer git designs for. Advancements in inverter technology for industrial applications. 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 insulated transformer use sf6 gas as the insulating and cooling medium instead of insulating oil.
The gasinsulated substation market is projected to reach usd 29. The oil in the tank is used for insulation and cooling. The function of the tank in the transformer is to be a container for the oil used in it. Gasinsulated transformers fall outside the focus, as they are. Further development of sf6 monitoring, emissions oversight and reporting. Pdf comparison between oil immersed and sf6 gas power. The idea with dissolved gas analysis is based on the fact that during its lifetime the transformer generates decomposition gases, essentially from the organic insulation, under the influ. Gasinsulated substation market global forecast to 2023. However, the development of sf6 gas insulation technology in china was rather slow in 1970s. Gas insulated transmission lines gil are a means of bulk electric power transmission at high and extra. Introduction to gas insulated substations switchgears gis.
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. Basics, maintenance, and diagnostics vii contents continued page 4. Gas insulated transformer full report free download as word doc. A power transformer is the most costly and essential equipment piece of equipment within an electrical substation. Ohl is via gil which runs through a tunnel of approximately. Seminar report on gas insulated transformer submitted by. Very fast transients vft in gas insulated substations gis ppt. Imia working group was established in 1995 to examine this topic and presented a report at the 1996 conference. For c hanging the insulating material from oil to sf6 gas a comparative study between these types of transformers.
Seminar topics 2014 new topic list a technique for online detection of shorts in fields of turbine generator rotor. International seminar on compact substations and gasinsulated switchgear. Development of the sf 6n 2 gas mixture insulated transformer in. Pdf the 21 st century substation design final project report. Oilinsulated transformers are used to stepup or stepdown the voltage level for purposes needed. A transformer has no moving parts and is a completely static solid state device, which insures, under normal operating conditions, a long and troublefree life. Gas insulated transformer submitted by saroj kumar nayak regd no. Case a three phase transformers with a wye and delta secondary winding. Iec 62271203 highvoltage switchgear and controlgear part 203. Available social infrastructure systems can be further customized through the addition of instrumentation, process control systems, or programmable logic controls. 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. Tidal energy scope of future renewable energy can be used to decrease global dependence on natural resources, and tidal power can be the primary form of renewable power utilized. The seminars objective is to provide a basic knowledge of the process of.
The connection from the transformers to the remote. The construction of gas insulated transformer is basically the as an oil insulated transformer with small difference that oil is replaced by sf6 gas. A power transformer requires various routine maintenance. Tm 5686 power transformer maintenance and acceptance. Sf6an overview applications of a gas insulated transformer features of a gas insulated transformer layout cooling apparatus of a gas insulated transformer important accessories conclusion sf6 is sulphur hexafluoride formed by chemical reaction of molten sulphur and fluorine. Download the seminar report for testing of transformer. Gas insulated substation presented by ajooba alam 1rnee004 eee, 8th semester under the guidance of mr.
Gas insulated switchgear is used in industrial areas to fulfil highenergy demands by space saving design with a minimum of cost. Gas insulated transformer full report transformer electrical. Ac cable versus shos cable transmission for offshore wind farms. The transformer is a static electric device consisting essentially of two or more windings wound on the same core electromagnetic induction transforms electric energy from one circuit to another circuit such that the frequency of the energy remains unchanged while the voltage and current usually change definition of a transformers.
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