Solar-Cell Arc Fault Triggering for Fast Switchgear Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional arc fault detection and mitigation systems in low-, medium-, and high-voltage switchgears suffer from delays due to complex evaluation and trigger mechanisms, leading to inefficient arc fault clearing times and potential damage from arc-related phenomena.
Innovation Solution
A circuit breaker system incorporating a solar cell within the switchgear that directly activates the circuit breaker or arc mitigation device through radiation from an electrical arc fault, eliminating the need for external power and reducing response times by utilizing self-powered energy to trigger the electromechanics or electronic trigger mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional arc fault detection systems use complex evaluation and trigger mechanisms, then reliability of arc fault detection is improved, but response time increases leading to slower arc fault clearing
Solution Approach 1:
The patent extracts the essential detection function from the complex conventional system by using a solar cell that directly converts arc light into electrical energy to trigger the circuit breaker. This eliminates the need for complex evaluation electronics, sensors, and external power supplies, achieving both high reliability and fast response by removing unnecessary system components.
Solution Approach 2:
The solar cell is self-powered by the arc light itself, converting the optical energy from the arc fault directly into electrical energy to trigger the circuit breaker. This self-service mechanism eliminates dependency on external power supplies and complex control electronics, reducing response time while maintaining reliable detection.
2Object-affected harmful factors
If active internal arc mitigation systems use fast earthing components, then arc impact is reduced, but system complexity and cost increase
Solution Approach 1:
The patent removes the need for complex control electronics, external power supplies, and sophisticated evaluation units by using a solar cell that directly converts arc light into trigger energy. This extraction of essential functionality reduces system complexity while maintaining the ability to provide fast earthing and mitigate arc impact.
Solution Approach 2:
The patent replaces complex electronic evaluation systems and external power supply infrastructure with a passive solar cell that directly converts optical energy from the arc into electrical energy. This substitution eliminates multiple system components and reduces overall device complexity while achieving the same protective function.
3Measurement precision
If conventional systems use external power supply and evaluation units, then detection accuracy is improved, but response time and system complexity increase
Solution Approach 1:
The patent extracts only the essential detection and triggering function by using a solar cell that directly converts arc light intensity into electrical energy. This eliminates evaluation units, external power supplies, and complex signal processing electronics, achieving fast response time while maintaining detection accuracy through direct optical-to-electrical energy conversion.
Solution Approach 2:
The solar cell serves itself by using the arc light it detects to generate the electrical energy needed for triggering. This self-service approach eliminates dependency on external power supplies and complex evaluation electronics, reducing trigger response time while maintaining the ability to accurately detect arc faults through the solar cell's direct energy conversion.
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 achieves rapid arc fault detection and mitigation, minimizing arc impact by disconnecting current flow within milliseconds, ensuring quick and reliable protection against internal arc faults without external power dependency.
Implementation Method 1
The solar cell is configured to activate the electromechanics or electronic trigger mechanism of the circuit breaker due to radiation from an electrical arc fault of the switchgear impinging upon the solar cell
Data Source
AI summary
A circuit breaker system includes a solar cell and a circuit breaker. The circuit breaker operates within a switchgear and comprises an electromechanics or electronic trigger mechanism that, when activated, activates the circuit breaker. The activated circuit breaker disconnects current flow within the switchgear. The solar cell activates the electromechanics trigger mechanism due to radiation from an electrical arc fault of the switchgear impinging upon the solar cell.