S
Dear all readers
Recently I've encountered a mechanical-hydraulic governor load and speed adjusters (motors), as an vague operation system that made me confused very much.
This governor is a traditional fly-ball governor that has to (load & speed) motors on it.
What do these motors actually do?
How does governor adjust the speed of power plant unit constantly (from no load to full load) for example (200 rpm) and what are the rules of (load and speed)'s motors in this process?
Also I see the Operators after paralleling the generator to the power network with (speed and load selectors on Control Board) try to put load on the generator. They say, they open speed to 100% using speed selector and limit the generator load (P out_real power) and adjust it by load selector. I asked what's the different between load and speed. They say there is no different and do the same things, just two motors on Governor!! Why?
I've found Speed of unit was constant and the Pout generator was constant too.
Now there are question. How does the governor keep the speed and out put Power (real power) of the generator constant while unit is parallel to the network? I see the governor command to the servo motor that opens and close wicket gates.
In no load condition and full load condition what do the load and speed motors do in order to keep the unit speed (from no load to full load) and load (real power) be constant and the philosophy of what do Operators do get load from Generators?
Speed no load = Constant 200 rpm
Speed full load = Constant 200 rpm
Speed constant from no load to full load
Real power of Generator (P out) no load = 0 MW
Real power of Generator (P out) full load = Constant 30 MW
Imag power of Generator (Q out) no load = 0 MW
Imag power of Generator (Q out) full load = [-2 Mvar +12Mvar]
V terminal : [12.2 14] Kv
Also I've found that Operators adjust the reactive power and terminal voltage of generator using AVR selector time to time while AVR was on automatic condition, and it should correct the voltage to the 13.8 KV.
It's my question why do they this? Why doesn't AVR correct it automatically while it's on automatic mode?
Best regards
[email protected]
Recently I've encountered a mechanical-hydraulic governor load and speed adjusters (motors), as an vague operation system that made me confused very much.
This governor is a traditional fly-ball governor that has to (load & speed) motors on it.
What do these motors actually do?
How does governor adjust the speed of power plant unit constantly (from no load to full load) for example (200 rpm) and what are the rules of (load and speed)'s motors in this process?
Also I see the Operators after paralleling the generator to the power network with (speed and load selectors on Control Board) try to put load on the generator. They say, they open speed to 100% using speed selector and limit the generator load (P out_real power) and adjust it by load selector. I asked what's the different between load and speed. They say there is no different and do the same things, just two motors on Governor!! Why?
I've found Speed of unit was constant and the Pout generator was constant too.
Now there are question. How does the governor keep the speed and out put Power (real power) of the generator constant while unit is parallel to the network? I see the governor command to the servo motor that opens and close wicket gates.
In no load condition and full load condition what do the load and speed motors do in order to keep the unit speed (from no load to full load) and load (real power) be constant and the philosophy of what do Operators do get load from Generators?
Speed no load = Constant 200 rpm
Speed full load = Constant 200 rpm
Speed constant from no load to full load
Real power of Generator (P out) no load = 0 MW
Real power of Generator (P out) full load = Constant 30 MW
Imag power of Generator (Q out) no load = 0 MW
Imag power of Generator (Q out) full load = [-2 Mvar +12Mvar]
V terminal : [12.2 14] Kv
Also I've found that Operators adjust the reactive power and terminal voltage of generator using AVR selector time to time while AVR was on automatic condition, and it should correct the voltage to the 13.8 KV.
It's my question why do they this? Why doesn't AVR correct it automatically while it's on automatic mode?
Best regards
[email protected]