Why is the Security Constrained Dispatch (SCD) not dispatching my generator to its economic base point?
One possibility is that base loaded low cost generators can be backed down because of the block loading of Gas Turbines (GTs). In order to meet the load requirement quickly GTs may be called upon. However GTs are quick start generators and come in increments of blocks of MW. These blocks may exceed the need and therefore require that other unit be back down to match supply with the load. Please explain how Security Constrained Dispatch (SCD) can move a generator from one interval to the next at a rate that exceeds the generators response rate. SCD will move the generator for the next interval starting from the previous basepoint, or where the generator is actually operating. The starting point for SCD could be the prior SCD basepoint or the actual generation whichever is lower when SCD is trying to reduce generation output. If the actual generation is less than the previous SCD basepoint then the different between the prior and the new SCD basepoint may appear to be greater than the re
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