RPS.pptx

this ppt about rana pratap sagar dam.

1. A Rana Pratap Sagar Hydro Electric Power Plant Presented By: Naman Singhvi Presented To: Dr. Shobi Bagga Roll No . : 2 1 / 517 Batch : EC3 A Rana Pratap Sagar Hydro Electric Power Plant Presented By: Naman Singhvi Presented To: Dr. Shobi Bagga Roll No . : 2 1 / 517 Batch : EC3 PRESENTATION ON SUMMER TRAINING AT RANA PRATAP SAGAR HYDROELECTRIC POWER PLANT Presented By: Naman Singhvi Presented To: Dr. Shobi Bagga Roll No . : 2 1 / 517 Batch : EC3

2. Content: Introduction Basic Principle General Description Major Elements Power Transformer Electricity Equipments Control Room Auxiliary Power Supply Conclusion

3. Introduction : RPS is balancing reservoir between G.S. upstream and J.S. on downstream. This is followed by Kota barrage and water is diverted from it extensively which is used for irrigation purpose in part of Rajasthan and Madhya Pradesh. The hydroelectric power station located at the downstream of RPS dam on Chambal River. The RPS dam constructed between 1965 and 1968 is dedicated to nation by former prime minister late Smt. Indira Gandhi. There are four dams in cascade on Chambal River in stretch of 70KM as riverbed drops by about 120 m between Gandhi Sagar.

4. Basic Principle : When a closed coil is rotated rapidly in a strong magnetic field, the number of magnetic flux lines passing through the coil changes continuously. Hence an EMF is induced in the coil and the current flows in it. In fact the mechanical energy expended in rotating the coil appears as electrical energy (current) in the coil.

5. Layout: Fig: 1 Hydroelectric Power Plant Layout Diagram

6. General Description : At RPS HEPS, vertical turbine rotates at 125 rpm by the water velocity. Generator is directly coupled with the turbine, giving output of 43MW at 11KV voltage at 50 Hz frequency. Output voltage is step up to 132 KV by the transformer and transmitting to the Northern grid through seven transmission lines which are going to Bhilwara District, Kota District, Jawahar Sagar Dam and Gandhi Sagar Dam.

7. Function of RPS : To produce electricity as an active power of 4*43 MW and supplying it to Rajasthan through 7 lines of 132 KV. In Past Time Synchronous Condenser is used for better voltage regulations of the grids when required. To provide dedicated Power Supply to the nearest Nuclear Power Station on priority basis whenever there is a problem in Northern grid for starting of the plant and for maintaining Auxiliary Power Supply of their plant in order to meet the safety norms of Nuclear Stations. To supply first power to the grid by the self-start in case of total collapsing of northern grid.

8. MAJOR ELEMENTS : This is constructed to act as safety valve. It discharges the overflow water to the down streamside when the reservoir is full. A condition mainly arises during floods periods. It is closed conduct, which connected the fore bay or surge tank to the scroll case of turbine. The typical diameter of penstock is 20 feet. The water after having done its useful worked in the turbine is discharged to the tailrace, which may lead it to the same stream or to another one. The water discharge through a tunnel. It is an integral part of turbine. The inlet of draft tube is connected to the turbine and outlet is submerged deep into tailrace. The draft tube makes the turbine capable of utilizing kinetic energy of the exit water. Spillway Penstock Tail Race Draft Tubes

9. MAJOR ELEMENTS : Its purpose is to store water during excess flow periods and supply the same during lean flow periods. Thus it helps in supplying water to the turbines according to load of power plant. The function of dam is not only to raise the water surface of the stream but also to create an artificial head and to provide the poundage, storage or the facility of diversion into conduits . A forebay may be considered as an enlarged body of water just above the intake to store water temporarily to meet the hourly load fluctuations . It is provided for preventing the debris form getting entry into the intakes from the fore bay. Manual cleaning or mechanical cleaning is used to remove the debris from Trash Rack. Storage Reservoir DAM Forebay Trash Rack

10. Power Transformer : Power transformer is used for stepping up the voltage for transmission. Generally Δ-Y connected power transformers are used. They are Oil-Immersed Transformer. Transformer Rating: KVA 55000 Phase 3 Frequency 50Hz Input 11kv(delta) Output 132kv(star) Cooling OFW-55 o C

11. Generator : The generators used in Hydro Power Plant are usually Three Phase Synchronous machines. The generators have the speed range of 70- 1000 RPM. Generators have either a vertical shaft arrangement or horizontal shaft arrangement. But the vertical shaft arrangement is preferred. The generator cooling can be achieved by air circulation through the Stator Ducts . Electrical Equipments : Main bracket: All rotating parts in addition to hydraulic thrust are supported through the thrust bearing by the main bracket which have 4 arms resting on the edge of the turbine pit. At the end of each bracket arms are mounted by two units of counted brackets and jacks.

12.  Stator : The 396 Slot Stator is wound with Diamond type coils containing Four windings and connects 6 circuit wires with 6 main and 3 neutral leads brought out. Stator winding insulation in unit 1, 3, and 4 is class F. Rotor: The field coils are lubricated strip wound, 27 turns per pole in class F installation. Resistance of the 48 posts field windings 0.196 ohms at 25 centigrade.

13. Electrical Equipments : Exciter: The excitation system monitors the generator output and regulates the magnetic field to maintain the desired voltage. As the load on the generator is increased, an increase in current flow causes the voltage to drop. Fig: 3 Exciter

14. Working : Hydroelectric and coal-fired power plants work in similar ways to produce electricity. Both types of plants use a turbine, which is like a propeller, and an electric generator. The turbine is turned by a power source, either steam in a coal-fired plant or falling water in a hydroelectric plant.  In a Hydroelectric plant, a dam is built on a river with a steep drop in elevation. The dam creates a reservoir of water behind it. The water is pulled down by gravity through a pipe called a Penstock inside the Dam. At the end of the Penstock, the moving water turns the turbine propeller. The turbine is connected to a metal shaft that is part of the electric generator, which produces the electricity. The shaft connected to the turbine goes up into the generator, where electricity is produced.

15. Working : The generator works based on a principle discovered by Faraday. When a magnet moves past a conductor, it creates electricity. In a large generator, electromagnets made of wire wound around magnetic steel are used. These electromagnets move past conductors, causing electricity to flow and voltage to develop. The generated electricity is then sent through power lines to our homes and mines. The water that passed through the turbine flows out of the Dam into the river. It's important to stay away from the water below the Dam. Hydroelectric Power mainly comes from the energy of dammed water driving a turbine and generator. The amount of energy extracted from the water depends on the volume and the difference in height, known as the head. Pumped storage hydroelectricity is a method that helps meet high peak demands by moving water between reservoirs at different elevations.

16. Fig: 4 Generator

17. CONTROL SYSTEM The generation of the electricity is at 11KV and transmitted on 132 KV. There are four transmission lines from the RPS power plant, two lines to Kota and other two to Bhilwara, two lines to Gandhi Sagar Dam and one to industrial line. CONTROL ROOM The control room is where operators perform plant operations using control systems every day, and a safe, comfortable, and functional environment helps operators to run the plant more efficiently. BENCH BOARD Bench Board is a metal board having all the turbine controls of a Hydraulic Power Plant. It have many controls like Penstock gate control, Excitation control, Speed Control, Synchronization, Generator Breaker, etc.  

18. PLCC ROOM PLCC stands for Power Line Carrier Communication . This Room has all communication controls and fault analysis by finding location of fault. . BATTERY ROOM This room has 110 batteries each of 2V, 400Amh all connected in series. The total power it provides is 220V, 400Amh. It supplies to the Exciter and Relays.  

19. It controls the switching on, switching off and measure the Auxiliary Power taken by plant. AUXILLARY POWER SUPPLY : Fig: 8 Auxiliary power supply

20. Conclusion : I am thankful to you entire RPS for providing me this golden opportunity, which made me to learn a lot of valuable things. In our college, we are taught theoretical knowledge which is not sufficient to cope up in the industry. So here in RPS,I learn how production activities are coordinated. Here, I learnt the organizational behavior, which is a very important part of engineering education. I saw the various production activities which were just taught in the class room to us. Practical knowledge is entirely different from theoretical knowledge, so it is very necessary to gain practical aspect of technical knowledge. Here in RPS I learnt practical knowledge. Here I saw objectives could be achieved by the hard work of a group. It is the hard work of RPS , which made them the market leader in their field. It was a pleasure to see the RPS with such devotion.

21. Thank You