Power Demand Regulation System for Load Control Accuracy
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Solution Overview
Problem
Existing demand response techniques in power systems face accuracy issues in predicting load reduction, leading to potential equipment damage and consumer inconvenience due to inaccuracies in load control, resulting in either persistent outages or excessive load reduction.
Innovation Solution
An electric power demand regulating system that dynamically selects load apparatuses to change their operation state based on a regulation target value, load information, and consumer convenience, with the ability to update targets and adjust selection rules, including storage battery systems, to improve load regulation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the amount of load to be reduced is predicted by adding up the amount of load capable of being reduced in each apparatus, then the whole load control volume can be calculated, but the accuracy of the prediction deteriorates due to error accumulation
Solution Approach 1:
The patent divides the load control process into multiple stages, calculating the load control volume for each apparatus separately and then selecting apparatuses in sequence. Instead of predicting the total load reduction by summing all apparatuses at once, the system segments the calculation into individual apparatus contributions, reducing error accumulation.
Solution Approach 2:
The patent dynamically adjusts the selection of apparatuses and the load control volume based on real-time conditions. The system recalculates the required load control volume after each apparatus is selected and adjusts subsequent selections accordingly, making the prediction process adaptive rather than static.
2Reliability
If multiple apparatuses are stopped to reduce load, then the overload state can be resolved, but consumer convenience deteriorates
Solution Approach 1:
The patent applies partial action by selecting only the necessary number of apparatuses to reduce the load to an acceptable level, rather than stopping all apparatuses. The system calculates the precise load control volume needed and selects apparatuses in sequence until this target is achieved, avoiding excessive load reduction that would unnecessarily impact consumer convenience.
Solution Approach 2:
The patent changes the operational parameters of selected apparatuses rather than simply stopping them. The system can adjust the load control volume and selection criteria based on consumer convenience considerations, allowing for flexible parameter adjustment to balance equipment safety with user needs.
3Quantity of substance
If the load control volume is calculated by summing all apparatus load reductions, then the total reduction amount can be determined, but the accuracy deteriorates due to error propagation
Solution Approach 1:
The patent segments the load control volume calculation into individual apparatus contributions. Instead of calculating the total volume first and then distributing it, the system calculates each apparatus's potential load reduction separately and accumulates these segmented values, reducing error propagation.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system recalculates the required load control volume based on the actual state after each apparatus selection. This iterative feedback process corrects for prediction errors and improves the accuracy of subsequent calculations.
Data Source
AI summary
Provided is a technology that improves the precision of demand regulation in an electrical power system. This power demand regulation system (10) has a power demand regulation device (11) that regulates the load applied to equipment of an electrical power system (13) by a load apparatus (15) operating by means of power from the electrical power system (13), which supplies power to consumers (12). When regulating the load to the equipment, the power demand regulation device (11) selects a load apparatus (15) as the subject of a request for an alteration of operating state on the basis of by-apparatus load information, which is information of each load apparatus (15), and a regulation target value, which is the amount of load that is to be regulated, and, in the period from the start to the end of regulation, executes a plurality of times the outputting of an alteration request that requests the alteration of the operating state of the selected load apparatus (15).