Power Management Controller Priority Segmentation
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Solution Overview
Problem
Existing power management systems require longer times to secure margin electric power as the number of devices increases, as they request all devices to suppress power consumption, leading to prolonged permission times for devices requesting increased power.
Innovation Solution
A power management device that communicates with devices and a measurement unit to calculate margin electric power, allowing operation by transmitting suppression commands to devices with low priority, thus maintaining electric power within the margin by prioritizing power reduction in lower-priority devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric power adjuster requests all devices to suppress electric power when a power increase request cannot be responded to, then the margin electric power can be secured, but the time required to secure the margin electric power increases as the number of devices increases
Solution Approach 1:
The system segments the device set into multiple priority groups (first priority, second priority, etc.). When margin electric power needs to be secured, the electric power adjuster selectively requests suppression only from lower priority groups rather than all devices, thereby reducing the number of communication rounds and shortening the time required to secure margin electric power while maintaining reliability.
2Reliability
If the electric power adjuster requests all devices to suppress electric power, then the margin electric power is secured, but the complexity of the suppression process increases with the number of devices
Solution Approach 1:
By dividing devices into priority segments, the suppression process becomes more manageable and less complex. The electric power adjuster can systematically process suppression requests from lowest to highest priority groups, reducing the overall complexity of coordinating suppression across all devices while ensuring margin electric power is secured.
Solution Approach 2:
Different priority levels are assigned to different devices based on their local characteristics and importance. This allows the system to apply differentiated suppression strategies to different device groups, simplifying the overall control logic compared to uniform suppression of all devices.
3Reliability
If the electric power adjuster waits for information from all devices before deciding suppression targets, then accurate suppression decisions can be made, but the permission time from request issuance to operation start increases
Solution Approach 1:
Devices are pre-categorized into priority groups before suppression is needed. When margin electric power must be secured, the electric power adjuster can immediately initiate suppression requests to lower priority groups without waiting for information from all devices, significantly reducing permission time while maintaining decision accuracy through the pre-established priority structure.
Data Source
AI summary
A controller includes a request acquisition unit that receives an operation permission request from a device, a calculation unit that calculates margin electric power derived from measurement by a measurement unit and an upper limit electric power, and a suppression unit that instructs the device to lower electric power consumption. When the margin electric power is less than the required electric power, the controller suppresses electric power consumption in devices in lower priority order stored in a priority storage unit within the suppression unit, such that electric power consumption increase in the management area may remain within the margin electric power. Then the controller issues the requesting device permission-or-denial for the operation, from the calculation unit.