A SEMINAR ON…….POWER GENERATION AND TRANSMISSION IN NHPC At Teesta low Dam Stage-III, Rambi,<Darjeeling>WB PRESENTED BY : AKASH DEEP, <Electrical Engg.> 1000121012 AEC,AGRA SYNOPSIS GENERAL FACTS ABOUT NHPC INTRODUCTION TO TLD STAGE-III WORKING ELEMENTS SPECIFICATIONS PICTURE BOOKS AND DIAGRAM CONCLUSION CONTENTS INTRODUCTION OF NHPC INTRODUCTION OF TLD-III WORKING OF HYDROELECTRIC POWER PLANT Main Components POT HEAD YARD SERVICE BAYS. GIS MACHINE FLOOR TURBINE FLOOR COMPRESSOR FLOOR . GT YARD. West Bengal. 000 Million for development of Hydro-Electric power in all aspects.150. It promises to deliver total of 4502 MW of power by its power plants under construction among which Teesta Low Dam-III Power Station.INTRODUCTION NHPC Limited is an Electric Utilities Company. NHPC delivers a total of 6507 MW of power by its present running plants. a Mini Ratna Category-I Enterprise of Government of India that was incorporated in 1975 with an authorised capital of Rs.000 Million and share capital of Rs. .2. CAPACITY 132 MW(33X4) . Location Darjeeling. Nearest Rail Head New Jalpaiguri 5. West Bengal 4. River Teesta Low Dam-III Power Station Teesta 3. Name of the Project/Site 2.Introduction to TLD-III 1. In hydroelectric power plants the potential energy of water stored at a height is converted into electrical energy.736*W*H*Q*ƞ/75) KW . TOTAL POWER THAT CAN BE GENERATED IS:- P= (0. 5. Barrage Head Race Channel Penstock Underground and Surface Power House Tail Race Channel •. 3. 2. The total power generation capacity of the hydroelectric power plants depends on the head of water and volume of water flowing towards the water turbine. •. •.Components of a hydro-electric power plant 1. 4. . VIDEO . 5 M. It is Open Water Circulating System. IMAGE .PRIMARY COOLING WATER SYSTEM Located at an elevation of 176. 4 Induction Motor are being used and the rest 2 induction motors are stand-by. SECONDARY COOLING WATER SYSTEM Located at an elevation of 180. Each unit has an operating 3-ph induction motor and a standby 3-ph induction motor for the pump unit.25 M. In total there are four operating motors and four standbys for the four pump units. IMAGE . It is a closed circulating system. TURBINE FLOOR This floor is located at an elevation of 184.5 m. The turbine employed at TLDP – III is Kaplan Turbine (VERTICAL CONFIGURATION). • • Type of sealing: Shaft seal Maintenance seal image . Rated output of each turbine is 34MW. Specification of alternator: - RATED SPEED RATED FREQUENCY 136.7 AMP RATED VOLTAGE 11000 ±10% VOLTS RATED POWER FACTOR 0.25 m.9 RATED FIELD VOLTAGE 118 VOLTS salient- .36 RPM 50 Hz RATED OUTPUT 36670 KVA RATED CURRENT 1924. In the alternator of TLDP-III.GENERATOR FLOOR This floor is located at an elevation of 187. the construction of rotor is pole type & the stator winding is of Y-connected to line. EXCITATION CONTROL BOARD. The Machine Hall has following installations: 1.5m. .MACHINE HALL The elevation of machine hall is 190. UNIT CONTROL BOARD. 4. OPU CONTROL BOARD. 3. OPU (Oil Pressure Unit) 2. CONTROL ROOM HAS TWO MORE ROOM. LTAC ROOM image . THEY ARE: 1.CONTROL ROOM The elevation of CONTROL ROOM is 190. BATTERY ROOM 2. The whole plant is controlled through SCADA (SUPERVISORY CONTROL AND DATA ACQUISITION).5m. HP & LP COMPRESSOR: ROLE OF HP COMPRESSOR: It generates a pressure of 68 bar.OTHER IMPORTANT INSTALLATIONS IN TLDP-III 1.8 bar. provides pressure to the maintenance seal. Use for braking purpose. provides air pressure to oil pressure unit (OPU) air is provided to LP compressor from HP compressor. . ROLE OF LP COMPRESSOR: It generates a pressure of 7. 2. Generator transformer (GT). . there are six transformers used for each individual unit. Lighting arrester voltage transformer (LAVT). Excitation transformer (ET). 5.2. Unit auxiliary transformer (UAT). Neutral grounding cubicle (NGC). 4. 6. They are as follows: 1. TRANSFORMERS In TLDP-III. 3. Service station transformer (SST). 3. sulphur hexafluoride gas act as the insulating medium. . switchgear is the combination of electrical switches. GAS INSULATED SWITCHGEAR used to control. protect and isolate electrical equipment. isolators & circuit breakers. Electrical Installations:Wave Trap Capacitive Voltage Transformer Lightening Arresters .4. 3. POT HEAD YARD 1. 2. Located at an height of 210.00 m. It is not only to get technical experience but also to observe management practice and how to interact with fellow workers. .CONCLUSION I would like to say that this training is an excellent opportunity for me. The main objectives of this industrial training are to observe and practice how the basic machine knowledge and engineering is applicable in the real industries.