Solar Panel Series Disconnection Switch for Firefighting Safety
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Solution Overview
Problem
Solar power generation systems pose safety risks during firefighting, as they continue to generate voltage, potentially causing electric shocks to workers when water is used to extinguish fires, due to the inability to disconnect the serial connection of panels during emergencies.
Innovation Solution
A solar power generation system with a switch that can be controlled to disconnect the serial connection of solar power generation panels, allowing for safe disconnection of the power generation function, thereby preventing electric shocks during firefighting operations by limiting the voltage to a safe level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If solar power generation panels are connected in series to generate power, then power generation efficiency is improved, but safety risk increases due to high voltage during firefighting
Solution Approach 1:
The solar power generation system is divided into multiple independent groups, each with its own switch. This allows the system to maintain series connection for efficient power generation while enabling selective disconnection of individual groups for safety during firefighting operations.
Solution Approach 2:
Switches are pre-installed in each group of solar panels before deployment. In case of fire, these switches can be immediately activated to disconnect the series connection, preventing electric shock risks to firefighters without waiting for system failure or manual intervention.
2Object-affected harmful factors
If switches are added to disconnect serial connection for safety, then safety during firefighting is improved, but device complexity increases
Solution Approach 1:
Instead of adding a complex centralized switching system, the patent segments the solar array into multiple groups with simple individual switches. This distributes the safety function across multiple simple components rather than requiring one complex control system.
Solution Approach 2:
Each group of solar panels is equipped with its own switch, making the system self-regulating for safety purposes. The distributed switch architecture allows each segment to independently manage its own safety without requiring complex external control systems.
3Object-affected harmful factors
If switches are provided at multiple positions to disconnect serial connection, then safety control is improved, but manufacturing cost increases
Solution Approach 1:
The solar array is segmented into groups that can be disconnected independently. This segmentation allows safety control at multiple strategic points while avoiding the need for switches at every possible location, optimizing the balance between safety and manufacturing cost.
Solution Approach 2:
Switches are strategically positioned at specific locations within the solar array where they provide maximum safety benefit. This localized approach ensures adequate safety control without the excessive cost of universal switch installation at every potential disconnection point.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents electric shocks to workers during firefighting by safely disconnecting the serial connection of solar power generation panels, ensuring the voltage remains at a level that does not pose a risk, allowing for safer firefighting and reducing the risk of panel damage.
Implementation Method 1
a solar power generation panel for generating power by solar light has been known
Data Source
AI summary
A solar power generation system is provided which can disconnect serial connection of a plurality of solar power generation panels in case of fire and prevent electric shock to a worker by water jetting. A solar power generation system 110 for converting solar energy to electric power includes a plurality of solar power generation panels 111 which is connected in series and a switch 115 which enables to disconnect or connect the serial connection of the plurality of solar power generation panels 111, and the switch 115 operates when receiving a specific control signal. This makes it possible to disconnect the serial connection of the plurality of solar power generation panels 111, and prevent electric shock to the worker by water jetting in case of fire.