AC-Side Battery Power Correction for Microgrid Anti-Backflow Control
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Solution Overview
Problem
Existing intelligent microgrids face issues with power backflow into the grid, causing fluctuations and stability problems, especially when there is a second power generation system present, and conflicts between scheduling instructions and real-time feedback lead to system errors.
Innovation Solution
An AC side anti-backflow control method and terminal that involve obtaining electrical parameters of the microgrid, calculating a correction coefficient, and performing adjustments to the battery system power using this coefficient to prevent backflow, ensuring the battery system operates based on set powers and avoiding conflicts between scheduled and real-time power adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If scheduling instructions and real-time feedback are processed simultaneously by EMS, then comprehensive power management is achieved, but instruction conflict occurs and system errors arise
Solution Approach 1:
The patent establishes preliminary action priorities where scheduling instructions are processed first to set the baseline power output, and real-time feedback is then applied as adjustments within the remaining capacity. This preliminary sequencing prevents instruction conflict by clearly defining the order of operations and ensuring that real-time adjustments do not contradict scheduled power delivery commitments.
Solution Approach 2:
The patent implements a feedback mechanism where real-time power output monitoring compares actual performance against scheduling instructions. When deviations are detected, the system adjusts future scheduling or real-time commands to align with actual system state, preventing cumulative errors and ensuring that scheduling and real-time control work cooperatively rather than conflict.
Data Source
AI summary
Disclosed are an AC side anti-backflow control method and a terminal. The method includes: obtaining an electrical parameter of an intelligent microgrid; and calculating a correction coefficient according to the electrical parameter, and performing correction and control on power of a battery system side of the intelligent microgrid according to the correction coefficient. By utilizing the correction coefficient, it is ensured that the battery system side operates on the basis of an originally set power, and it is also ensured that when the power of the battery system side in a time segmented configuration changes, an adjustment power that collects power feedback in real-time changes following the power of the battery system side in the time segmented configuration.