Steam turbine generator speed control - clarification

Dear,

in steam turbine speed controller mode is only active up to FSNL.just when we sinc with Grid it shifted from Speed Controller Mode to load controller mode(to control the load)now if change in frequency of the system speed will only change with load rejection and load increment on ST by Load control Mode.

when ST will Desinc with grid it will come on Speed controller mode again...

About your Second Question pressure controller mode is the mode in which ST is controlling our Boiler.if a set point of pressure is given on Pressure mode now ST Governor Valve will set that pressure on the Boiler by opening And closing not seeing the load....
 
The turbine components shall comprise of spiral case, runner, turbine shaft, guide vanes, stay vanes, draft tube bend, links and levers for guide vane operation, servomotor etc. The turbine components dimensions and weights worked out by the computation programs, however, these dimensions may vary slightly depending upon the selected manufacturer. Nevertheless, due to these small variations, the powerhouse structures shall not be affected.

Source
http://enggpedia.com/mechanical-eng...tionary/hydraulics/1729-components-of-turbine
 
N

Namatimangan08

> I welcome all feedback on why I am wrong.
>
>CTTech

To my knowledge, you get it all right CTTech.
 
Dear CSA,

if the load sudden decrease in power system, the frequency of grid will increase, it will cause the governor to react to the change (decrease the speed).

However, what i heard from my lecturer, the detection of frequency from the grid is too slow compared to detection of pressure in the generator in order for the governor to react. Can you help me to explain this point?

Best Regards,
Wei Sheng

<b>moderator's note:</b> CSA is no longer a regular contributor to this forum.
 
Top