Power Supply Reconnection Control After Grid Accident Cutoff
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power system stabilizing systems do not efficiently manage the reconnection of regenerative power supplies after a system accident, leading to prolonged stop times and potential stability issues.
Innovation Solution
A power system stabilizing system that includes an accident detector, a power restriction target selector, a cutoff controller, a system restoration checker, and a reconnection controller, which detects system accidents, selects power restriction targets, cuts off power during accidents, checks system restoration, and reconnects power supplies once the system is restored.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual checking and reconnection by operators is used, then system stability is maintained through human judgment, but the stop time of regenerative power supplies is elongated
Solution Approach 1:
The system performs self-diagnosis and self-reconnection through the controller that automatically detects system accidents, determines power restriction targets, and executes reconnection when restoration is confirmed, eliminating the need for manual operator intervention and significantly reducing stop time while maintaining reliability
Solution Approach 2:
The system continuously monitors system state through the accident detector and uses this feedback to automatically make decisions about power restriction and reconnection, enabling rapid response to system accidents without manual intervention delays
2Productivity
If automated reconnection control is implemented, then stop time is reduced and productivity increases, but device complexity increases due to additional control functions
Solution Approach 1:
The controller integrates multiple functions including accident detection, power restriction target determination, restoration confirmation, and reconnection control into a single device, achieving automated reconnection without proportionally increasing overall system complexity
Solution Approach 2:
The system combines the accident detector and controller into an integrated control architecture where the controller utilizes detection results to automatically execute the complete sequence of power restriction and reconnection operations, streamlining the system while maintaining full automation capability
Data Source
AI summary
A power system stabilizing system includes an accident detector, a power restriction target selector, a cutoff controller, and a reconnection controller. The accident detector is configured to detect a system accident of a power system. The power restriction target selector is configured to select power restriction targets which are required for stability maintenance of the power system out of a plurality of power supplies included in the power system or connected to the power system according to a type of the system accident detected by the accident detector. The cutoff controller is configured to cut off the power restriction targets selected by the power restriction target selector. A system restoration checker is configured to check that the power system has been restored from the system accident on the basis of system information of the power system. The reconnection controller is configured to reconnect some or all of the power restriction targets cut off by the cutoff controller when the system restoration checker checks that the power system has been restored from the system accident.