Power Difference Compensation Patterns for Long-Term Renewable Variations
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Solution Overview
Problem
Existing techniques for compensating for long-term power supply and demand variations in renewable energy systems are unreliable due to the need for accurate predictions of resource remaining amounts, leading to potential compensation failures if predictions deviate.
Innovation Solution
A power difference compensation apparatus that calculates a compensation pattern for long-term supply and demand variations, allowing for effective resource control to mitigate these differences without relying on specific storage facilities, using a combination of ICT load movement, storage battery charging/discharging, and system power utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prediction-based compensation using hydrogen storage systems or storage batteries is used, then long-term power difference compensation is achieved, but reliability deteriorates when prediction deviates from actual remaining amounts
Solution Approach 1:
The system performs preliminary classification of power differences into short-term and long-term variations before compensation. By predicting long-term trends in advance and separating them from short-term fluctuations, the system prepares compensation strategies proactively rather than reactively, improving reliability by avoiding reliance on precise real-time predictions of remaining storage amounts.
Solution Approach 2:
The power difference is segmented into two distinct components: short-term supply and demand variation and long-term supply and demand variation. This segmentation allows each component to be handled by appropriate compensation mechanisms, with long-term variations managed through systematic control rather than dependent on prediction accuracy of remaining storage amounts.
2Adaptability or versatility
If storage facilities like hydrogen storage systems are used for long-term compensation, then compensation capability is improved, but system complexity increases due to facility requirements and prediction mechanisms
Solution Approach 1:
The control system is designed to manage multiple compensation resources (storage batteries, hydrogen storage systems, EV storage batteries) through a universal control framework. The system can adaptively select and coordinate different resources based on their availability and characteristics, providing versatile compensation capability without requiring complex dedicated control mechanisms for each facility type.
Solution Approach 2:
The control device acts as an intermediary that coordinates between different storage facilities and the power grid. It manages the compilation and execution of compensation patterns without requiring direct complex interactions between individual facilities, thereby reducing overall system complexity while maintaining comprehensive compensation capability.
Data Source
AI summary
A power difference compensation apparatus according to an embodiment is a power difference compensation apparatus that compensates for a difference between a power supply amount by renewable energy and a power demand amount of a load. The power difference compensation apparatus includes: a compensation pattern calculation unit configured to calculate, as a compensation pattern, a combination of a resource for compensating for a difference due to a long-term supply and demand variation in the difference and control content for the resource; and a long-term variation compensation unit configured to compensate for a difference due to the long-term supply and demand variation by controlling the resource based on the compensation pattern.