S
CSA,
I have been reading your post since 2009 and i must say they have been quite helpful in understanding the concept of Droop/ISO responses. However, i personally work in a power plant and i am stuck at one thing. i hope u will have answer for it.
Lets take an example and u correct me if i am wrong:
Lets just say, there is a machine on droop whose rated RPMs are 5000, and its Droop is set at 4% at a 60 Hz frequency grid. It will be on full load at droop compensation of 5200. Right?
Lets say machine was running at 50% load, so its droop compensation would be 5100 at that time. Correct? Lets say a machine on the same grid trips, and the frequency drops to 59.4 hz (i.e. 1% drop in frequency). the machine will take 25% load instantly as per its Droop setting of 4%. Now i have 2 questions:
1. Will the Droop compensation that was previously 5100 also change automatically or not? which i think it won't?
2. Then my second question is, basically the Droop compensation is defining the load of the machine, right? As in the above example if the droop compensation is 5050 RPM, it means machine is at 25% of rated load, if it is 5150 RPM then machine is at 75% rated load. So if the droop doesn't change automatically, then will the try to come back to its original load of 50%, because in the above example we assumed that the droop compensation 5100, so after taking 25% load and stabilizing the frequency of the grid will the machine try to get back to its 50% load??
I have been reading your post since 2009 and i must say they have been quite helpful in understanding the concept of Droop/ISO responses. However, i personally work in a power plant and i am stuck at one thing. i hope u will have answer for it.
Lets take an example and u correct me if i am wrong:
Lets just say, there is a machine on droop whose rated RPMs are 5000, and its Droop is set at 4% at a 60 Hz frequency grid. It will be on full load at droop compensation of 5200. Right?
Lets say machine was running at 50% load, so its droop compensation would be 5100 at that time. Correct? Lets say a machine on the same grid trips, and the frequency drops to 59.4 hz (i.e. 1% drop in frequency). the machine will take 25% load instantly as per its Droop setting of 4%. Now i have 2 questions:
1. Will the Droop compensation that was previously 5100 also change automatically or not? which i think it won't?
2. Then my second question is, basically the Droop compensation is defining the load of the machine, right? As in the above example if the droop compensation is 5050 RPM, it means machine is at 25% of rated load, if it is 5150 RPM then machine is at 75% rated load. So if the droop doesn't change automatically, then will the try to come back to its original load of 50%, because in the above example we assumed that the droop compensation 5100, so after taking 25% load and stabilizing the frequency of the grid will the machine try to get back to its 50% load??