Micro Hydro Power Flashcards
A device that converts the kinetic energy in flowing and falling water to mechanical energy is a?
Hydraulic turbine
A __________________ system converts the potential energy in flowing and falling water into electricity by means of a waterwheel or hydraulic turbine
Micro hydropower system
The typical components of a micro hydro power system are (6)
-water intake or weir
-canal
-forebay tank
-penstock
-powerhouse
-tailrace
A _______________ controller operates the turbine inlet valve to maintain constant speed and frequency when the load changes on the generator
Automatic controller
In a system connected to a grid with multiple sources the _________________ ensures that power always flows out from the generator to the system
Turbine control
The frequency of an asynchronous induction generator matches the ________________ as in a wind system
Line frequency
In some systems if the useful load on the generator is not high enough a _____________ may be automatically connected
Load bank
What is a load bank also called (3)
Diversion load
Dump load
Ballast load
A _____________ will dissipate energy not required by the load
Load bank
A _____________ although wastes energy, may be required if it’s not possible to stop the water flow through the turbine
Load bank
_________ of _________ generation requires much less flooding compared with conventional hydro electric projects
Run of river
Pressure x volume power lost at pressure reducing valves can be recovered by replacing the valves with a _____________ as a ___________
Pump as a turbine
Net metering process is
Complete application
Interconnection agreement
Site acceptable test
What does scada stand for
Supervisory control and data acquisition
A _____________ is an industrial control system that monitors and controls and industrial process
Scada
An ____________ relay is essential for disconnecting the turbine in the event of loss of grid phase
Intelligent relay
A ____________s purpose is to provide performance and status data for turbine flow rates and upstream/downstream pressures
Scadas
_______________ now allow the use of permanent magnet alternators that produce wild AC to be stabilized
Power electronics
With the availability of _____________________ it is often easier to operate the generator at an arbitrary frequency and feed it’s output through an inverter which produces output at grid frequency
Modern power electronics
Having modern power electronics allows _________________________ to be competitive
Low speed/low head water turbines
Canada’s potential for river current is estimated at
15000MW
___________ turbines are bigger than river turbines
Ocean
Ocean turbines are usually measured in
Mega watts
Advantages of a hydrokinetic system
-more predictable than wind
-no retaining structure
-few civil works required
-discreet or invisible
