The turbo generators manufactured in bhel haridwar are large size turbo. Bharat heavy electricals limited bhel owned and founded by the government of india, is an engineering and manufacturing company based in new delhi. Field switch allows connecting and disconnecting the output of the excitation system to the field winding of the generator. Igan generator tent running cover, ultra heavy duty tarpaulin enclosure, portable allweather generator rain shelter for most 3500w12000w generators, black1 4. Abstract dc insulation resistance ir and polarization index pi testing is very widely used to assess the condition of the rotor and stator windings in motors and generators. Establishment of bhel in 1964 was a breakthrough for upsurge in indias heavyelectrical equipment industry. Bharat heavy electricals limited an overview bhel today is the largest engineering enterprise of its kind in india with excellent track record of performance, making profits continuously since 197172. Official website of bharat heavy electricals limited, new. Training report done at bhel for electrical engineering. Bhel caters to core sectors of the indian economy viz, power generation and transmission, industry, transportation, renewable energy, defence etc. Introduction about bhel bhel, hyderabad unit manufactures turbo generators of rating up to 200 mw for industrial applications and for power generation in steam power plants.
Overexcited magnetic cores can lead to severe overheating and breakdown in insulation. More efficient better insulation efficient cooling lesser rotor weight and inertia rigid construction. The company manufactures mw nuclear turbine generator sets and has commenced production of mw nuclear turbine generator sets. Bhel is one of the largest engineering and manufacturing companies of its kind in india engaged in design, engineering, construction, testing, commissioning and servicing of a wide range of products and services with over 180 product offerings to meet the evergrowing needs of the core sectors of economy. If you want your generator to be powered by gas rather than diesel, inform the manufacturers about this. Government of india ministry of heavy industries and public. Bhel has 14 units spread all over india manufacturing boilers, turbines, generators, transformers, motors etc. Insulation class for generator windings electric power. Power plant and transmission system protection coordination. These are usually wound with class h insulation material, for short term standby service. Based on 20 replies to queries following maintenance planning periods obtained. It gives me immense pleasure to be writing the foreword to this book.
For good insulation, the resistance usually reads in the megohm range. For your emergency diesel set, i assume that a mass produced generator is used. How to test the insulation resistance of diesel generator. Equally serious is the flexing of the windings that can cause the insulated turns to short and bind together. Pdf training report on manufacturing of turbo generator. Bhel haridwar block 2 heavy fabrication, training report by uditsoni. Bhel is now fully geared up to refurbish retrofit repair by extending necessary engineering assistance to various customers including non bhel make sets. Bharat heavy electrical limited bhel is the largest engineering and manufacturing.
Low rpm 600 rpm alternators for alternate energy solutionsratings upto 500 kvatraction alternatorsupto 1600 hp. Igan generator tent running cover, ultra heavy duty tarpaulin enclosure, portable allweather generator rain shelter for most 3500w12000w generators, gray1 4. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. How to test the insulation resistance of diesel generator set. The coils are insulated from the rotor body with lshaped strips of glass fibre rotor slot wedges. To capitalize on this technical capability, ge designed. The manufacturing process of turbo generator is mainly divided into stator section and rotor. Stator winding insulated by using the proven epoxymica micalastic system. In the early 1970s ge introduced insulation sys tems capable of operating at class f temperatures 155 c, 311 f for the life of the generator. Generator set ratings the tables below summarises the definitions according to iso85281 for the generator set and a combination of iso85283 and iec600341 for the alternator. Foam strips with adhesive2 rolls, 1 inch wide x 18 inch thick high density soundproofing door insulation ac unit weather seal total 33 feet long16. These turbo generators along with excitation systems are supplied matching to.
Besides 14 manufacturing divisions the company has 4 power sector regional centres, 8 service centres and 18 regional offices and a large number of project sites thus enable the company to promptly serve its customers and provide them with suitable products, systems and services. Mar 17, 2021 additionally, bhel has already supplied 2x700 mwe steam turbine generator sets each for kakrapar atomic power plant unit 3 and 4 and rawatbhata atomic power plant unit 7 and 8. Nov 23, 2017 the relationship between insulation aging and generator lifespan using fiber optic sensors foss is explored to ultimately improve asset lifespan through smart choices in running conditions and maintenance. Training courses for trade professionals generac pro. A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Jun 30, 2015 the stator coils are provided with high voltage insulation to isolate the coils from the stator core by with standing voltage stresses. By conducting insulation level test on the diesel generator set and judging whether the insulation performance meets the equipment requirements, it can greatly avoid the leakage or short circuit accident caused by the aging of the insulation. This test procedure will cover the generator armature coils in the generator assembly.
Base frame to support the bearings with the rotor and the generator stator, 5. Industrial training at bharat heavy electricals limited. Biodata ratnanav acharya educational qualification. How to test the insulation level of diesel generator sets. Bhel was established in the year 1964 and from the year 1974 it started earning profits. Bhel haridwar tarining report block iv electrical engineering free download as pdf file.
Bhel has its market all over the world covering 75 countries producing about 9000 mw of generators to countries such as malaysia,iran,uae,bhutan. Classification of turbo generator the generators may be classified on the basis of cooling system used in it. The cooling of the armature winding is dependent on a number of factors. Turbo generator there are 12 designing steps to construct the turbo generator they are. Provides overexcitation protection for the generator and any terminal connected transformers, i. Cooler to be designed for at least 10 kgcm 2 gauge pressure on the gas side irrespective of a lower normal operating casing pressure. Generator insulationaging online monitoring technique based. Rajendra kumar sdgm block i bhel, hardiwar acknowledgement with the hike and inevitable advancement in the field of technology the role of an engineer becomes very significant. Bhel emerges lowest bidder for npcils rs 10,800 crore. Pdf 35041469 bhel mini pro report on turbo generators.
For indirectly cooled generator rotors, ventilation slots are machined in the teeth. Low rpm 600 rpm alternatorsfor alternate energy solutionsratings upto 500 kvatraction alternatorsupto 1600 hp. Bhel s vision is to become a worldclass engineering enterprise, committed to enhancing stakeholder value. Manfacturing of turbo generators at bhel slideshare. Bhel an overview bhel today is the largest engineering enterprise of its kind in india with excellent track record of performance, making profits continuously since 197172. Generator research institute, insulation systems engineering and central plant. May 12, 2014 bhel has proven turnkey capabilities for executing power projects from concept to commissioning. Bhel caters to core sectors of the indian economy viz.
The worlds broadest and most reliable portfolio of transformers components and insulation tata steel in thailand moves closer to its vision of zero failures the txpert tm enabled power transformers from hitachi abb power grids are expected to result in a 60% drop in downtime and 35% longer life expectancy at tata steels thailand. Coordination concerns coordinate with underfrequency load shedding ufls programs in. Fos provides the rare opportunity of being installed up close to the insulation, monitoring degradations that are. May 26, 2012 turbogenerator bhel hardwar generator cooling system. It ranks among the top twelve organizations in the world, engaged in the manufacture of power generation equipment. There are three types of coils manufactured in bhel,hyderabad 1 diamond pulled multi turn coils 2 multi turn bars 3 roebel bars 16. Bhel generator hydrogen cooling system 210 mw iaiig. Established in 1964, bhel is indias largest power generation equipment manufacturer. This enabled a significant uprating of generator designs about 10% with a minimal increase in cost. The complete guide to electrical insulation testing. Its modern manifestation was invented by charles parsons in 1884 the steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results. Gagan meena 11115030 under the able guidance of mr. Micalastic system has been adopted for high rating machinery. If a user wants some margin, then they may specify a lower class of temperature rise.
If their two wire ends are led out to the outside of the generator enclosure, should were measured in each of the windings between the insulation resistance of the insulation. Equipment major bharat heavy electricals ltd bhel has announced the successful manufacture and testing of the countrys first turbo. This class will ensure you understand and have proper knowledge of the installation requirements, best practices and code considerations for aircooled and liquidcooled rescom standby generators. So, just treat the generator frame as the ground rod and leave it at that, which this regulation permits. Oct 10, 20 bharat heavy electricals limited an overview bhel today is the largest engineering enterprise of its kind in india with excellent track record of performance, making profits continuously since 197172. Bharat heavy electrical limited bhel is the largest engineering and manufacturing enterprise of it kind in the public sector in india. If you need a work bench and storage cabinets, ask for them. It posses the technology and capability to produce thermal power plant equipments up to mw rating and gas turbine generator sets up to a unit rating of 240 mw. Generator windings, such as generator excitation system of synchronous generator stator winding, field winding brushless self reactor, current transformer windings. The vast reference list and successful operation of the various turbogenerators supplied is a testimony of bhel s performance. Synchronous generators classification based on the medium used for generation 5. Mar 27, 2015 study of turbo geneators at bhel, hyderabad 3.
Dc polarizationdepolarization measurement on stator. In block 4winding for turbo generator, hydro generator, insulation of. Portable generators and osha construction standards 305. If you need heated hoses, make sure your truck has them.
Termination of desired rtds on one side for monitoring the post curing temperature. Again, the insulation is abraded or worn away until failure occurs, causing a turn to turn motor failure. Operative condition of the generator when it is at nominal speed and voltage in terminals, and is not connected to the electric power system. Bhel haridwar tarining report block iv and block i insulation and manufacturing process of 500mw turbo generator bars.
Bhel haridwar tarining report block iv electrical engineering. Spray foam rig trailers and insulation equipment by profoam. Training report on manufacturing of turbo generator at bhel. B h e l company history information business standard. Bhel haridwar tarining report block iv electrical engineering scribd. Rotor, stator, auxiliary systems and bearings for each 15 days hydrogen shaft seals 3 days shaft insulation and earthing 5 days brush gear and slip rings 2 days jump to first page practices 2 replies to querries by. Insulation aging is a major factor that causes generator failure. Bhel has been a reliable supplier of critical equipment and services for indias nuclear programme for many decades with specialised manufacturing facilities and. Bhel hyderabad is the first to introduce the latest stateoftheart insulation. In electrical equipment such as generators, insulating materials are the weakest link and are often susceptible to high temperature and accelerated aging.
Bhel tests indias first 600 mw turbo generator the hindu. Bhel hardwar library of designs types of generators supplied by bhel. The megger insulation tester is essentially a highrange resistance meter. Generator control and protection generator protection g 64f 60 51n 24 87t 81u 47 62 27 87g 59 81o 321 59n 51gn 322 273n 40 51v 50 ie 46 49 63 reg 51 51 25. Insulation class b generator stator water cooling system rated mva rating mcr conditon 247 mw rated kva rating. As the insulation wears away, a point is reached where it can no longer withstand the voltage stress and a failure to ground occurs. Coordination concerns coordinate with underfrequency load shedding ufls programs in the system.
The irpi tests are good at identifying contaminated windings. The armature coils will include, but not be limited to, phasetophase tests and cointocoil tests. Bhel has already attained iso 9000 and all the major unitsdivisions of bhel have been upgraded to the latest iso9001. There are so many options of spray foam insulation trucks that choosing the best one can take you quite a lot of time. Turbo generators manufactured here range from 4 mw to 200 mw 4.
With a little recordkeeping and common sense, however, you can get a good picture of the insulation condition from values that are only relative. Joined bhel in the year 1983 as engineer trainee and posted at bhel. Once passed, you will gain access to the proresources generator sizer, proresources quote builder. Keeping motor windings dry electrical engineering portal. Key installation considerations when a generator is installed.
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