25-07-2012, 10:01 AM
HYDRO-POWER PLANT
HYDRO-POWER PLANT.ppt (Size: 536 KB / Downloads: 87)
INTRODUCTION
“A generating station which utilises the energy of water at a high level for the generation of electrical energy is known as a hydro-electric power station”.
Hydro-electric power station are generally located in hilly area where dams can be built conveniently and large water reservoirs can be obtain. In a hydro-electric power station, water head is created by constructing a dam across a river or lake. From the dam, water is led to water turbine. The water turbine captures the energy in the falling water and change the hydraulic energy into mechanical energy at the turbine shaft. The turbine drives the alternator which converts mechanical energy into electrical energy . The hydro-electric power station are becoming very popular because of fuels are depleting day by day .
WHAT IS HYDROPOWER?
It is capture of energy of moving water to generate electric power.
Falling water is used to turn the turbine blades
Turbine converts hydraulic energy to mechanical energy.
Alternator converts mechanical energy to electrical energy .
WORKING OF HYDROPOWER PLANT
A hydro-power plant simply involves the conversion of hydraulic energy into electrical energy .
The dam is construction across a river or tank and water from the catchment area collect at the back of the dam to from a reservoir . A pressure tunnel is taken off from the reservoir and water brought to the valve house at the start of the penstock .The valve house contain main sluice valves and automatic isolating valves . The former controls the water flow power house and the latter cut off supply of water when the penstock bursts . From the valve house , water is taken to water turbine though a huge steel pipe known as penstock . The water turbine converts hydraulic energy into mechanical energy . The turbine drives the alternator which converts mechanical energy into electrical energy.
WHAT IS DAM?
It consists of floodgates which prevents water flow into specific land regions
It is a medium to store water at a height.
Most hydropower plants rely on dams.
Dam are built of concrete or stone masonary , earth or rock fill.
The earth dam may be best suited for a wide valley.
ADVANTAGES-
IT requires no fuel as water is used for the generation of electrical energy .
It is quite neat and clean as no smoke or ask is produced .
It requires very small running charges because water is the source of energy which is available free cost.
It is comparatively simple in construction and requires less maintenance.
It does not require a long starting time like a steam power station. In fact , such plants can be put into service instantly.
It is robust and has a longer life.
DISADVANTAGES-
IT involves high capital cost due to construction of dam.
There is uncertainty about the availability of huge amount of water due to dependence on weather conditions.
Skilled and experienced hands are required to built the plant.
It requires high cost of transmission lines as the plant is located in hilly area which are quite away from the consumer.
HYDRO-POWER PLANT.ppt (Size: 536 KB / Downloads: 87)
INTRODUCTION
“A generating station which utilises the energy of water at a high level for the generation of electrical energy is known as a hydro-electric power station”.
Hydro-electric power station are generally located in hilly area where dams can be built conveniently and large water reservoirs can be obtain. In a hydro-electric power station, water head is created by constructing a dam across a river or lake. From the dam, water is led to water turbine. The water turbine captures the energy in the falling water and change the hydraulic energy into mechanical energy at the turbine shaft. The turbine drives the alternator which converts mechanical energy into electrical energy . The hydro-electric power station are becoming very popular because of fuels are depleting day by day .
WHAT IS HYDROPOWER?
It is capture of energy of moving water to generate electric power.
Falling water is used to turn the turbine blades
Turbine converts hydraulic energy to mechanical energy.
Alternator converts mechanical energy to electrical energy .
WORKING OF HYDROPOWER PLANT
A hydro-power plant simply involves the conversion of hydraulic energy into electrical energy .
The dam is construction across a river or tank and water from the catchment area collect at the back of the dam to from a reservoir . A pressure tunnel is taken off from the reservoir and water brought to the valve house at the start of the penstock .The valve house contain main sluice valves and automatic isolating valves . The former controls the water flow power house and the latter cut off supply of water when the penstock bursts . From the valve house , water is taken to water turbine though a huge steel pipe known as penstock . The water turbine converts hydraulic energy into mechanical energy . The turbine drives the alternator which converts mechanical energy into electrical energy.
WHAT IS DAM?
It consists of floodgates which prevents water flow into specific land regions
It is a medium to store water at a height.
Most hydropower plants rely on dams.
Dam are built of concrete or stone masonary , earth or rock fill.
The earth dam may be best suited for a wide valley.
ADVANTAGES-
IT requires no fuel as water is used for the generation of electrical energy .
It is quite neat and clean as no smoke or ask is produced .
It requires very small running charges because water is the source of energy which is available free cost.
It is comparatively simple in construction and requires less maintenance.
It does not require a long starting time like a steam power station. In fact , such plants can be put into service instantly.
It is robust and has a longer life.
DISADVANTAGES-
IT involves high capital cost due to construction of dam.
There is uncertainty about the availability of huge amount of water due to dependence on weather conditions.
Skilled and experienced hands are required to built the plant.
It requires high cost of transmission lines as the plant is located in hilly area which are quite away from the consumer.