6.3 Optimization Experiments
171
Figure 6.10 First iterations of the total consumption optimizer experiment run (1-minute
resolution of the energy data)
the endorsement of the prioritization of the objective functions as well as the simplification of the experiments. If all optimization parameters for the total energy
consumption and the peak load optimization were varied in parallel in one experiment, it would require a much higher number of iterations to obtain a similarly
good solution as in the two separate experiments.
As in the first optimization experiment, the parameter configurations for the
offset parameter are varied within the limits set by the production manager. Since
the total output of the production should not be adversely affected, the offset parameter may cause a delay of one production line by a maximum of five minutes (or
ten finished parts). The results of the peak consumption optimizer are presented
in Figure 6.11.
The offset causes a slightly delayed start of the machines of line 1, therefore
other values of the energy consumption profiles of the single machines meet and
add up to lower power load peaks as shown in Figure 6.12.
At this point it is important to understand that the total energy consumption
of the production lines is not affected in forms of energy savings, the offset
parameter only causes a shift of the consumption point in time into the future
(Figure 6.13). The level of total energy consumption for the two production lines
determined in the first optimization experiment remains the same.
171
Figure 6.10 First iterations of the total consumption optimizer experiment run (1-minute
resolution of the energy data)
the endorsement of the prioritization of the objective functions as well as the simplification of the experiments. If all optimization parameters for the total energy
consumption and the peak load optimization were varied in parallel in one experiment, it would require a much higher number of iterations to obtain a similarly
good solution as in the two separate experiments.
As in the first optimization experiment, the parameter configurations for the
offset parameter are varied within the limits set by the production manager. Since
the total output of the production should not be adversely affected, the offset parameter may cause a delay of one production line by a maximum of five minutes (or
ten finished parts). The results of the peak consumption optimizer are presented
in Figure 6.11.
The offset causes a slightly delayed start of the machines of line 1, therefore
other values of the energy consumption profiles of the single machines meet and
add up to lower power load peaks as shown in Figure 6.12.
At this point it is important to understand that the total energy consumption
of the production lines is not affected in forms of energy savings, the offset
parameter only causes a shift of the consumption point in time into the future
(Figure 6.13). The level of total energy consumption for the two production lines
determined in the first optimization experiment remains the same.