Outlet Priority Control for Power Shortage Load Shedding
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Solution Overview
Problem
Off-grid power supply systems face challenges in managing power distribution efficiently during supply shortages, often resulting in inadequate meeting of demander needs due to prioritization methods that may not accurately reflect user priorities or lead to unnecessary power outages.
Innovation Solution
A management device and method that monitor power supply and consumption, determine outlet priorities based on assigned priority identification information, and control interruption units to disconnect low-priority outlets during supply shortages, ensuring stable power delivery to high-priority loads while minimizing disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If priority-based outlet disconnection control is implemented during supply shortage, then stable power supply to high-priority loads is improved, but system complexity increases due to priority identification and monitoring requirements
Solution Approach 1:
The system segments outlets into different priority levels (first priority, second priority, etc.) and applies different disconnection controls to each segment during supply shortages. This allows selective power cutoff to lower-priority outlets while maintaining supply to higher-priority outlets, resolving the contradiction by organizing the system into manageable segments with distinct control rules.
Solution Approach 2:
The system performs preliminary actions by acquiring and storing priority identification information for each outlet in advance, before supply shortages occur. When shortages happen, the pre-stored priority information enables immediate appropriate disconnection control without complex real-time analysis, thus improving reliability while limiting the increase in operational complexity.
2Productivity
If automatic priority-based disconnection control is implemented, then power distribution efficiency is improved, but operational simplicity deteriorates due to reduced user control over power supply
Solution Approach 1:
The system enables outlets to effectively self-identify their priority levels through stored identification information, and the control device automatically executes disconnection decisions based on this pre-configured information during shortages. This self-service mechanism improves distribution efficiency while minimizing the need for complex user interventions during critical shortage events.
Solution Approach 2:
Users perform preliminary actions by configuring priority identification information for each outlet in advance. This pre-configuration allows the automatic control system to operate efficiently during shortages while preserving user intent and preferences, thus maintaining ease of operation through advance setup rather than real-time control.
3Adaptability or versatility
If priority identification information is acquired from storage medium at connection time, then adaptability to different user needs is improved, but measurement and detection difficulty increases
Solution Approach 1:
The system performs the detection and acquisition of priority identification information as a preliminary action when outlets are first connected or configured. By acquiring this information in advance through storage media rather than during shortage events, the system achieves high adaptability to different user needs while avoiding the complexity of real-time detection under critical conditions.
Solution Approach 2:
The storage medium acts as an intermediary that stores priority identification information, separating the detection/acquisition function from the control decision function. This intermediary approach allows flexible priority assignment through the storage medium while simplifying the detection process, as the information is readily available when needed without complex real-time measurement requirements.
Data Source
AI summary
A management device controls an interruption unit provided between a power supply source and each of a plurality of outlets. The device determines whether it is in a supply shortage state, determines priorities of the plurality of outlets, and switches the interruption unit associated with an outlet having a low priority to a disconnection state in a case of a supply shortage state. Each of the plurality of outlets includes an acquisition unit configured to acquire priority identification information from a storage medium to which the priority identification information is assigned when at least one load is connected. The device determines the priority of the outlet for each of the plurality of outlets based on the priority identification information acquired by the acquisition unit.