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I'm having a bit of trouble getting my head around this so I ask for help.
Recently, as our plant was starting up, I saw the following:
GT running at full speed (3000 rpm) so as to produce a 50Hz frequency to Sync with the grid. Once it was at this speed it synchronized with the grid but was producing only 40MW at the time (Max Capacity of 120MW). Gradually the load was increased and the output was ramped up to 120MW.
Now I understand this increase in load is due to injecting more fuel. What I don't understand is how does it produce more power by running at the same speed? What exactly is the relation between fuel and power output if the RPM is kept constant? And how much of a role does the excitation play during this ramping up? I feel I'm probably overlooking something very basic here but I just can't seem to understand it.
Recently, as our plant was starting up, I saw the following:
GT running at full speed (3000 rpm) so as to produce a 50Hz frequency to Sync with the grid. Once it was at this speed it synchronized with the grid but was producing only 40MW at the time (Max Capacity of 120MW). Gradually the load was increased and the output was ramped up to 120MW.
Now I understand this increase in load is due to injecting more fuel. What I don't understand is how does it produce more power by running at the same speed? What exactly is the relation between fuel and power output if the RPM is kept constant? And how much of a role does the excitation play during this ramping up? I feel I'm probably overlooking something very basic here but I just can't seem to understand it.