Current-Sensing Shutoff Circuit for Isolating Faulty Power Strings
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Solution Overview
Problem
Current power generation systems require significant manpower for on-site monitoring and are prone to accidents due to overloaded devices and lack of immediate fault isolation, leading to reduced safety and efficiency.
Innovation Solution
An intelligent optimized power monitoring shutoff device and system that includes a power conversion module, current detection modules, a switch module, and a communication control device to monitor and isolate abnormal power generation devices in real-time, preventing disasters and maintaining system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual monitoring of power generation devices is used, then system simplicity is maintained, but safety and efficiency deteriorate due to delayed fault detection and response
Solution Approach 1:
The power generation system performs self-monitoring through integrated detection modules that automatically track current values and compare them against thresholds, enabling the system to detect and respond to faults without external human intervention
Solution Approach 2:
The system continuously monitors current values from power generation devices, compares them against preset thresholds, and provides real-time feedback through alarm signals and automatic shutoff actions when abnormalities are detected, creating a closed-loop control system that improves safety
2Productivity
If real-time automated monitoring and shutoff is implemented, then safety and efficiency improve, but device complexity and cost increase
Solution Approach 1:
The monitoring system is divided into independent functional modules including current detection modules for individual devices, a central comparison unit, and shutoff mechanisms, allowing the system to monitor multiple power generation devices without proportionally increasing overall complexity
Solution Approach 2:
The system preset thresholds for abnormal current values and pre-configures shutoff mechanisms, enabling immediate automatic response when faults occur without requiring complex real-time decision algorithms, thus maintaining productivity while controlling complexity
3Reliability
If distributor-based circuit control is used, then system simplicity is maintained, but safety deteriorates due to inability to perform local single-point control
Solution Approach 1:
Each power generation device is equipped with its own current detection module and shutoff mechanism, enabling independent local control of individual devices without affecting the entire circuit system, thus achieving both safety and operational flexibility
Solution Approach 2:
The monitoring and control functionality is distributed to local levels where individual power generation devices can be independently monitored and controlled based on their specific conditions, rather than using a centralized distributor-based approach
Data Source
AI summary
An intelligent optimized power monitoring shutoff device includes a power conversion module, first current detection module, second current detection module, switch module, measure control module, and bypass module coupled with each other. The power conversion module enables one of the power generation devices to supply power to each module. The first and second current detection modules detect the power generation current value of the power generation device and the overall current value of the power generation system. The measure control module compares the two current values, and switches the switch module to the open-circuit status when the power generation current value is smaller than the overall current value, such that current of the power generation system flows through the bypass module. An intelligent optimized power monitoring shutoff system is provided for monitoring the operation status and maintaining the maximum power generation efficiency.