Energy Storage Control Apparatus for Accurate Power Sharing
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Solution Overview
Problem
The hierarchical demand and supply control apparatus in power systems struggles to accurately perform power demand and supply adjustments due to the inability to update and transmit aggregated secondary battery information within a fixed time, leading to incomplete data and inaccurate adjustments.
Innovation Solution
A control apparatus and system that calculates a sharing ratio for each energy storage apparatus based on state information and demand and supply adjustment information, allowing for optimized power sharing and transmission to ensure accurate demand and supply adjustments across the power system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hierarchical demand and supply control apparatus updates and transmits aggregated secondary battery information at fixed time intervals, then the system maintains regular control cycles, but the power demand and supply adjustment cannot be performed accurately when information from all secondary batteries cannot be received within the fixed time
Solution Approach 1:
The control apparatus dynamically adjusts the information collection timing and aggregation process based on the actual availability of data from secondary batteries. Instead of rigidly adhering to fixed time intervals, the system adapts its operation to ensure accurate demand and supply adjustment by collecting information from available batteries within the time window and proceeding with control calculations using the aggregated data that is actually obtained.
2Measurement precision
If the control apparatus waits to collect information from all secondary batteries before performing demand and supply adjustment, then complete information is obtained, but the control response time is delayed and the adjustment accuracy deteriorates due to outdated data
Solution Approach 1:
The control apparatus performs demand and supply adjustment using information from the subset of secondary batteries that have provided data within the current time window, rather than waiting for complete information from all batteries. This partial action approach allows the system to proceed with control calculations using available data, ensuring timely response while maintaining sufficient accuracy for effective power adjustment.
Data Source
AI summary
A control apparatus includes an optimization processing unit which individually calculates a sharing ratio of each of a plurality of energy storage apparatuses to adjusted total power of which demand and supply is adjusted by the energy storage apparatuses on the basis of state information of the corresponding energy storage apparatus, a calculation unit which calculates shared power in at least one energy storage apparatus using demand and supply adjustment information relating to the adjusted total power in the plurality of energy storage apparatuses and the sharing ratio of the at least one energy storage apparatus, and a communication unit which transmits the shared power to the corresponding energy storage apparatus.