PPT On POWER HOUSE LAYOUT AND COMPONENTS
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The layout of hydro power plant envisages positioning of the various components of the plant to insure optimum use of available space for its efficient and convenient erection, operation and maintenance.
2. LAYOUT OF HYDRO POWER PLANT
The power house can be positioned at the toe of the concrete masonry dam where the suitable rock to lay foundation is available. Each turbine is fed by a separate penstock which is embedded inside the non-overflow section of the dam. The power house is separated from the dam by expansion joints.
3. LAYOUT OF HYDRO POWER PLANT
Power house may also be located further downstream and fed through a tunnel branching into individual penstocks near the powerhouse. The location of power house is dependent on several parameters like availability of head, geographical condition, quality of rocks, etc.
4. SCHEMES OF HYDROPOWER PLANT
CONVENTIONAL
Most of the hydropower plants are conventional in design, meaning they use one way water flow to generate electricity.
PUMPED STORAGE
Water is recirculated between two reservoirs.
5. CONVENTIONAL
There are two categories of conventional plants:
Run-Of-River
These plants use little, if any, stored water to provide water flow through the turbines. Although, some plants make use of running water, weather changes - especially seasonal changes – cause plants to experience significant fluctuations in power output.
6. CONVENTIONAL
Storage These plants have enough storage capacity in dams to off-set seasonal fluctuations in water flow and provide a constant supply of electricity throughout the year. Large dams can store several years worth of water. It caters to peak load requirement.
7. PUMPED STORAGE
Pumped storage plants reuse water. Initially, water is made to flow from upper reservoir to lower reservoir through turbine, thereby producing power. During off-peak hours (period of low energy demand), water is pumped into the upper reservoir to be reused for power generation during periods of peak demand.
8. PUMPED STORAGE
The same turbine-generator that generates electricity from falling water is also used to pump the water back into the storage tank. In this case, the generator changes the direction of the electric field, forcing the turbine to rotate in the reverse direction and act as a motor, which runs the pump. An important advantage is quick delivery of power during emergencies and power surges.
9. TYPES OF POWERHOUSES
Surface power house: It is the best choice when sufficient area is available to accommodate the powerhouse within economical and convenient excavation.
The surface power house with setting of turbines below the minimum tail water level may involve substantial excavation and then backfilling with concrete to facilitate construction of high retaining walls for protections against floods. In this type, vertical shafts are driven in rock for housing part of draft tube, spiral casings and generators.
10. For more please refer our PPT. Thank You.
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POWER HOUSE LAYOUT AND COMPONENTS Presentation Transcript:
1. LAYOUT OF HYDRO POWER PLANTThe layout of hydro power plant envisages positioning of the various components of the plant to insure optimum use of available space for its efficient and convenient erection, operation and maintenance.
2. LAYOUT OF HYDRO POWER PLANT
The power house can be positioned at the toe of the concrete masonry dam where the suitable rock to lay foundation is available. Each turbine is fed by a separate penstock which is embedded inside the non-overflow section of the dam. The power house is separated from the dam by expansion joints.
3. LAYOUT OF HYDRO POWER PLANT
Power house may also be located further downstream and fed through a tunnel branching into individual penstocks near the powerhouse. The location of power house is dependent on several parameters like availability of head, geographical condition, quality of rocks, etc.
4. SCHEMES OF HYDROPOWER PLANT
CONVENTIONAL
Most of the hydropower plants are conventional in design, meaning they use one way water flow to generate electricity.
PUMPED STORAGE
Water is recirculated between two reservoirs.
5. CONVENTIONAL
There are two categories of conventional plants:
Run-Of-River
These plants use little, if any, stored water to provide water flow through the turbines. Although, some plants make use of running water, weather changes - especially seasonal changes – cause plants to experience significant fluctuations in power output.
6. CONVENTIONAL
Storage These plants have enough storage capacity in dams to off-set seasonal fluctuations in water flow and provide a constant supply of electricity throughout the year. Large dams can store several years worth of water. It caters to peak load requirement.
7. PUMPED STORAGE
Pumped storage plants reuse water. Initially, water is made to flow from upper reservoir to lower reservoir through turbine, thereby producing power. During off-peak hours (period of low energy demand), water is pumped into the upper reservoir to be reused for power generation during periods of peak demand.
8. PUMPED STORAGE
The same turbine-generator that generates electricity from falling water is also used to pump the water back into the storage tank. In this case, the generator changes the direction of the electric field, forcing the turbine to rotate in the reverse direction and act as a motor, which runs the pump. An important advantage is quick delivery of power during emergencies and power surges.
9. TYPES OF POWERHOUSES
Surface power house: It is the best choice when sufficient area is available to accommodate the powerhouse within economical and convenient excavation.
The surface power house with setting of turbines below the minimum tail water level may involve substantial excavation and then backfilling with concrete to facilitate construction of high retaining walls for protections against floods. In this type, vertical shafts are driven in rock for housing part of draft tube, spiral casings and generators.
10. For more please refer our PPT. Thank You.
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