Electric Load Profile Control for Peak-Aware Network Switching
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Solution Overview
Problem
Current methods for managing load profiles in low or medium voltage electric networks are inadequate, leading to power consumption peaks that can cause network malfunctions and result in costly penalty fees, as they rely on instantaneous power measurements and predefined shedding schemes that disconnect loads unnecessarily.
Innovation Solution
A method for dynamically managing the disconnection and connection of electric loads within predefined time windows, using load management criteria that can be adapted to the network's operating conditions and incorporating alternative power sources, allowing for optimal power consumption targets and avoiding unnecessary load disconnections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If instantaneous power measurements are used as a basis for load disconnection, then the response speed to power peaks is improved, but unnecessary disconnections of loads occur in case of transients
Solution Approach 1:
The system performs preliminary actions by predicting future power consumption based on historical data and current trends. Instead of reacting to instantaneous peaks, the load management system proactively identifies potential overload conditions and adjusts load disconnection strategies in advance, preventing unnecessary disconnections during transient conditions while maintaining response effectiveness.
2Ease of manufacture
If predefined load shedding schemes are adopted, then the implementation simplicity is improved, but the adaptability to different operating conditions deteriorates
Solution Approach 1:
The system transitions from static, predefined load shedding schemes to dynamic load management. The load disconnection strategy is continuously adjusted based on real-time power consumption patterns, historical data, and predicted future conditions. This allows the system to adapt to varying operating conditions while maintaining a structured approach to load management.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring power consumption, comparing actual usage against predicted patterns, and adjusting load disconnection strategies accordingly. This closed-loop approach enables the system to learn from past performance and optimize future decisions, combining the simplicity of predefined schemes with the flexibility of adaptive response.
3Power
If loads are disconnected immediately when power consumption exceeds a fixed threshold, then the power peak control is improved, but the user comfort deteriorates due to frequent disconnections
Solution Approach 1:
The system performs preliminary load management by predicting future power consumption and proactively adjusting load disconnection strategies before actual peaks occur. This prevents frequent, sudden disconnections that disrupt users, while still maintaining effective power peak control through advance planning and gradual load adjustment.
4Adaptability or versatility
If the load management system considers alternative power generation means, then the system flexibility is improved, but the device complexity increases
Solution Approach 1:
The load management system is designed with multi-functionality to handle diverse power sources including traditional grid power and alternative generation means such as solar or wind. The system universally manages power from any source by focusing on the functional outcome (power consumption management) rather than the specific source type, thereby achieving flexibility without proportionally increasing complexity.
Data Source
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AI summary
The invention relates to a method for managing the load profile of a low or medium voltage electric network (10) that is supplied by at least an electric power source. (100) The electric network comprises one or more electric loads (Ll...Lk) and one or more controllable switching devices for disconnecting/connecting said electric loads from/with said electric power source. The method comprises the step of measuring a time window from a reference instant, the step of determining at least a check instant comprised in said time window and the step of executing a load profile control procedure at said check instant. In a further aspect, the invention relates to a control system for executing the above described method.