Power Demand Control Excluding Low Capacity Devices
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Solution Overview
Problem
Existing electric power demand control techniques inadvertently target bottleneck devices, leading to decreased productivity in manufacturing systems.
Innovation Solution
A system that monitors power consumption and production capacity of manufacturing devices, excluding the device with the smallest production capacity from power demand control to prevent productivity loss, thereby controlling energy usage without impacting production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If electric power demand control is performed based on power consumption level, then power consumption is reduced, but bottleneck devices are unintentionally targeted and productivity decreases
Solution Approach 1:
The patent changes the control parameter from power consumption level to production capacity. By prioritizing devices with smaller production capacity for power control, the system ensures that bottleneck devices (which have high production capacity) are not targeted, thus maintaining productivity while still achieving power consumption reduction goals.
2Loss of energy
If power consumption is reduced to avoid exceeding contracted electric power, then electricity charges are reduced, but production efficiency may be degraded
Solution Approach 1:
The control strategy shifts from monitoring power consumption to monitoring production capacity. This parameter change allows the system to identify which devices can be controlled without impacting overall production efficiency, as bottleneck devices with high production capacity are automatically excluded from control targets.
Data Source
AI summary
Power demand control is performed without a decrease in productivity. A device for performing electric power demand control includes: a processor; and a storage medium including an instruction for causing the processor to obtain a sum of energy consumption of a plurality of manufacturing devices, obtain a production capacity from production information on each manufacturing device, and perform electric power demand control on a manufacturing system based on the production capacity and the sum of energy consumption. To perform electric power control includes determining that electric power demand control is necessary if the sum of energy consumption reaches a predetermined threshold and excluding one of the manufacturing devices having a smallest production capacity from a target of electric power demand control.