Load Scheduling Control for Contracted Power Capacity Limits
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Solution Overview
Problem
The increasing demand for electricity and the simultaneous activation of numerous loads in electricity-consuming fields often leads to excessive power consumption, causing overload trips and exceeding contracted electricity capacity, resulting in additional billing costs.
Innovation Solution
A power control system and method that categorizes loads into essential and non-essential groups, allowing non-essential loads to operate during off-peak periods and optimizing power consumption through load shedding or reduced power usage during peak periods, using a processing module, database, and control module to manage electricity consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large number of loads are activated simultaneously, then the electricity consumption increases to meet demand, but the power consumption exceeds the contracted capacity causing overload trips and extra billing costs
Solution Approach 1:
The system performs preliminary classification of loads into essential and non-essential groups, and predicts peak periods in advance. During predicted peak periods, non-essential loads are proactively controlled to operate in low-power mode or be shut off, preventing overload conditions before they occur. This allows the system to meet electricity demand while maintaining power supply stability within contracted capacity limits.
2Reliability
If non-essential loads are restricted during peak periods, then the power consumption stays within contracted capacity, but the electricity consumption decreases and may not meet the demand
Solution Approach 1:
The system implements periodic operation for non-essential loads by allowing them to operate at full power during off-peak periods and restricting them during peak periods. The control module dynamically adjusts the operation state of non-essential loads based on real-time power consumption data and predicted peak periods, enabling loads to accumulate their operational needs during low-demand periods and meet essential demands during peak periods while staying within contracted capacity.
3Reliability
If the switch device trips to protect against overload, then the power supply safety is maintained, but the loads are stopped and cannot continue operation
Solution Approach 1:
The system segments loads into essential and non-essential groups, and further divides non-essential loads into those operating at full power and those in low-power mode. When overload conditions are detected or predicted, the control module selectively shuts off or reduces non-essential loads while maintaining essential loads, preventing switch tripping. This segmentation allows the system to maintain power supply safety while ensuring continuous operation of critical loads.
Data Source
AI summary
A power control system includes a processing module, a database, and a control module. A power control method thereof includes: obtain an electricity consumption of loads from the electricity consumption metering device through a processing module, and generate a scheduled electricity consumption status in an electricity consuming period of the electricity consuming field; the scheduled electricity consumption status includes a peak period and an off-peak period; create a load data in the database; the load data sorts the loads into a first electricity consuming group and a second electricity consuming group; the loads of the first electricity consuming group are defined as an essential load, and the loads of the second electricity consuming group are defined as a non-essential load; control the loads of the second electricity consuming group to run during the off-peak period through a control module based on the load data and the scheduled electricity consumption status.