2.Chapter_1_introduction to power stations.ppt
- 1. Introduction to Power Stations Srikanth Allamsetty
- 2. Contents • Introduction to Power Plants • Introduction to – Hydro power plants – Thermal power plants – Nuclear power plants – Solar power stations – Wind power stations – Diesel power plants
- 3. Introduction to Power Plants • Power ratings for appliances: Appliance power rating (W) AC 3517 /ton Ceiling fan 10-50 Laptop 20-75 Printer 100 Iron box 1000 Incandescent bulbs as per rating Microwave 600-1500 LED/LCD TV 91.5
- 4. Introduction to Power Plants • Total installed capacity: 356.8 GW • Gross electricity generated: 1486.5 Twh Type of Power station % of installed capacity % of power generation Coal 56.2% 75.9% Large hydro 12.7% 9.7% Small hydro 1.3% 0.4% Wind 10% 4% Solar 8% 2% Nuclear 1.9% 2.9% Gas 7% 3.9% Bio mass 2.6% 1.2% May 31st, 2019 (2017-18)
- 5. Introduction to Power Plants Mechanical Energy Electrical Energy • The necessary things: – A rotating machine – Fuel
- 6. Hydro power plants Drawn by Srikanth Allamsetty
- 8. Thermal power plants • Main parts: – Coal handling plant – Boiler – Economizer, Air preheater – Steam turbine and Condenser – Cooling tower and ponds, Feed water heater, – Ash handling plant, E.S.P, – Power supply to auxiliaries
- 11. Nuclear power plants • Nuclear reactor and heat exhanger replace boiler of thermal power plant • Qualified professional personnel needed to work with the fuel. • Very less amount of fuel can generate more amount of power. • Capital cost is so high.
- 12. Solar power plants • Solar power plants use one of two technologies: – Photovoltaic (PV) systems use solar panels, either on rooftops or in ground-mounted solar farms, converting sunlight directly into electric power. – Concentrated solar power (CSP, also known as "concentrated solar thermal") plants use solar thermal energy to make steam, that is thereafter converted into electricity by a turbine.
- 16. Wind power stations • A weathervane and a robot orient the nacelle so that the blades are positioned optimally with regard to the wind. • nacelle houses the generator and the electrical and mechanical gear. • When the wind speed is faster, a braking mechanism automatically stops the wind turbine, ensuring the safety of the installation and minimizing wear.
- 20. Diesel Power Plant • A diesel power plant is a standby power station. • It’s generally a compact station so it can be located when we actually require it. • Emergency supply station.
- 21. COMPARISON BETWEEN DIFFERENT GENERATING STATIONS
- 22. Sl. No Parameter Thermal Hydro Nuclear 1 Site Availability of coal, water and transport facilities. Possibility of Large reservoir / Dam Away from population centres 2 Initial cost Lower High Highest 3 Running cost Higher than Hydro-electric Practically nil Minimum running cost 4 Limit on source of power Limited reserve of coal Water in reservoir is not dependable Adequate amount available 5 Fuel transport cost Maximum Practically nil Minimum 6 Cleanliness & Simplicity Not very clean Simplest and Clean Less Cleaner than Hydro-electric Power Plants Tuesday, December 24, 2024 22 COMPARISON BETWEEN DIFFERENT GENERATING STATIONS