Battery Control Device for Dynamic Grid Balance
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Solution Overview
Problem
Existing power grid control methods struggle to accurately reflect short-term fluctuations in renewable energy sources, such as photovoltaic power generation, leading to difficulties in managing the balance between electric power supply and demand, as they rely on outdated scheduling methods that do not account for real-time changes in weather conditions.
Innovation Solution
A control device and system that includes detection, communication, and control means to monitor and adjust the operation of batteries connected to the power grid, using bidirectional communication to receive and comprehend adjustment power amounts and operation control information, allowing for real-time adjustments to maintain grid balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a power grid control method uses customer-side secondary batteries to implement adjustment of the supply and demand of electric power based on scheduled operation, then the ability to manage electric power supply and demand is improved, but the ability to respond to short-term fluctuations in renewable power sources is insufficient
Solution Approach 1:
The patent transitions from static scheduled operation to dynamic real-time control. The control device continuously acquires actual power supply/demand information and battery state data, then dynamically adjusts charging/discharging commands in real-time based on current grid conditions rather than following predetermined schedules, enabling adaptation to short-term renewable power fluctuations
Solution Approach 2:
The patent implements a feedback mechanism where the control device continuously monitors the actual state of secondary batteries (charge level, temperature, etc.) and actual power supply/demand conditions, then uses this feedback information to adjust subsequent charging/discharging commands. This closed-loop control enables real-time response to changing grid conditions and renewable power output
2Ease of operation
If the secondary battery control system controls charging and discharging in accordance with received operation schedule regardless of actual power grid state, then operational simplicity is improved, but control accuracy relative to real-time grid conditions deteriorates
Solution Approach 1:
The control device continuously acquires actual power supply/demand information and battery state data from the grid, comparing it with the scheduled operation parameters. Based on this feedback, the system dynamically adjusts charging/discharging commands to match real-time grid conditions while maintaining automated operation, thus preserving ease of operation while improving control accuracy
3Reliability
If thermal power generators are used to compensate for variations in the balance between supply and demand of electric power, then the ability to maintain power balance is improved, but the ability to handle rapid fluctuations from decentralized power sources is insufficient
Solution Approach 1:
The patent leverages the dynamic response capability of secondary batteries to rapidly adjust charging/discharging operations in real-time based on fluctuating renewable power output and demand conditions. This dynamic control enables the system to respond quickly to rapid power fluctuations that thermal power generators cannot handle effectively, while maintaining overall power balance reliability
Data Source
AI summary
A control device for controlling the operation of a supply and demand adjustment device that is connected to a power grid includes: detection means for detecting the state of the supply and demand adjustment device; communication means for transmitting the detection result of the detection means to an external device and receiving from the external device operation control information for controlling the operation of the supply and demand adjustment device; comprehension means for receiving and comprehending an adjustment power amount transmitted by bidirectional communication or one-way communication; and control means for, based on the adjustment power amount and the operation control information, controlling the operation of the supply and demand adjustment device.