I have always wondered how the generators at hydro-electric power stations maintain a constant speed of rotation to produce a constant frequency of supply to the nation .
My point is that frequency depends on speed. So if , at a time , there is more inflow of water from the reservoir/river/falls, so that the generator turbines rotate at a higher speed , thus increasing the frequency of power supply.
A solution is to convert the a.c generated to d.c using diodes ! and filter capacitors ! and then reconvert it to a.c using LC circuit or others, which have a rock-solid frequency.
This is almost impractical, so then how is this problem handled ?
My point is that frequency depends on speed. So if , at a time , there is more inflow of water from the reservoir/river/falls, so that the generator turbines rotate at a higher speed , thus increasing the frequency of power supply.
A solution is to convert the a.c generated to d.c using diodes ! and filter capacitors ! and then reconvert it to a.c using LC circuit or others, which have a rock-solid frequency.
This is almost impractical, so then how is this problem handled ?