Power Load Management Using Dual Threshold Control
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Solution Overview
Problem
Existing power load management systems face challenges in accurately controlling the timing for unloading and reloading of electrical devices due to poor control accuracy, leading to inefficient power consumption and potential fines from exceeding contract capacity.
Innovation Solution
A method and system that determine two standard values to manage power load by comparing moving average power consumption over different time periods, using a power meter and control unit to issue signals for unloading or reloading, ensuring precise control and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single standard value is used to control power consumption, then the control system is simple, but the control accuracy is poor leading to inefficient power consumption
Solution Approach 1:
The patent divides the single standard value into two distinct standard values: a first standard value for comparing with a first monitoring value, and a second standard value for comparing with a second monitoring value. This segmentation allows for more granular control of power consumption by differentiating between immediate power status and historical power patterns, thereby improving control accuracy without requiring a complete system redesign
Solution Approach 2:
The system performs preliminary actions by calculating moving average values (first monitoring value and second monitoring value) before making unloading decisions. The first monitoring value represents recent power consumption trends while the second represents historical patterns. By pre-processing the power consumption data into these two distinct monitoring values, the system prepares accurate comparison metrics in advance, enabling more precise control decisions
2Reliability
If power consumption is not accurately controlled, then the system operation is simple, but fines are incurred due to exceeding contract capacity
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors power consumption, compares it against the two standard values, and adjusts the unloading/reloading decisions accordingly. The system uses the first monitoring value (recent trend) and second monitoring value (historical pattern) to provide multi-layered feedback, ensuring that unloading decisions are based on both immediate and historical power consumption patterns, thereby improving reliability of power consumption control
Solution Approach 2:
The patent replaces simple mechanical on/off control with an intelligent control system that uses moving average calculations and dual-threshold comparisons. Instead of direct mechanical switching based on a single threshold, the system substitutes mechanical simplicity with computational intelligence, using processed power consumption data to make more reliable control decisions that prevent contract capacity violations
3Loss of time
If unloading and reloading timing is poorly controlled, then the control mechanism is simple, but power consumption efficiency is reduced
Solution Approach 1:
The patent applies dynamics by making the unloading/reloading timing adaptive rather than static. The control unit dynamically adjusts timing decisions based on real-time comparison of power consumption against the first and second standard values. The first monitoring value captures dynamic recent trends while the second monitoring value provides contextual historical baseline, allowing the system to optimize unloading/reloading timing dynamically to improve power consumption efficiency
Data Source
AI summary
A method for power load management is provided in the present invention, wherein two different standard values are determined to be a basis for regulating power consumption. When power consumption exceeds a first standard value, a monitoring procedure is started to monitor consumption status. If the power consumption exceeds a second standard value, an unloading procedure is processed to reduce the power consumption of electrical devices under operation. In another embodiment, the present invention also provides a system for power load management comprising a control unit coupled to at least one electrical device and a power meter. By means of real-time recording of power consumption in the power meter, the control unit is capable of determining the power consumption status and determining whether it is necessary to unload or reload the at least one electrical device.