Remote Load Switching Circuit Breaker Wireless Control
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Solution Overview
Problem
Conventional remote switching circuit breakers rely on external wired communication and power sources, limiting their flexibility and safety, as they do not perform power quality checks after power outages, leading to potential damage to loads and requiring manual intervention for fault or overload conditions.
Innovation Solution
A remote load switching circuit breaker system using wireless communication for remote ON/OFF control, powered internally, with a control circuit for power quality checks and self-tests, allowing for pre-checks before resuming operation and automatic handling of less severe faults or overloads without tripping the primary contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external wired communication and power sources are used for remote switching, then reliable power supply and communication are achieved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent extracts the external power source requirement by implementing an internal power supply system that draws power from the circuit breaker's own electrical circuit. This eliminates the need for separate external power wiring and power supply units, thereby reducing system complexity while maintaining remote switching functionality through the wireless communication module.
Solution Approach 2:
The circuit breaker is designed to perform multiple functions: it provides circuit protection, enables remote switching via wireless communication, and supplies power to its own control and communication systems. This multi-functionality eliminates the need for separate external power and communication infrastructure, reducing overall system complexity.
2Ease of operation
If power quality checks are not performed after power outages, then circuit breaker operation is simplified, but load damage risk increases
Solution Approach 1:
The patent implements preliminary power quality checks that automatically execute after power outages or electrical disturbances. The controller assesses voltage stability, frequency, and waveform quality before allowing the circuit breaker to close and supply power to loads. This preliminary action prevents loads from being exposed to harmful electrical conditions while maintaining operational simplicity through automation.
Solution Approach 2:
The system continuously monitors electrical parameters and provides feedback to the controller. When power quality deteriorates or becomes unstable after a outage, the feedback mechanism triggers protective actions such as preventing circuit closure or alerting the user, thereby protecting loads without requiring complex manual intervention.
3Object-affected harmful factors
If conventional remote switching breakers trip automatically on fault or overload, then load protection is ensured, but user flexibility and convenience are reduced
Solution Approach 1:
The patent implements dynamic response strategies where the circuit breaker's behavior adapts based on the nature and severity of the fault. For minor overloads or temporary disturbances, the system provides warnings and allows continued operation with user notification. For severe or persistent faults, automatic tripping is activated. This dynamic approach balances load protection with user convenience by avoiding unnecessary trips while maintaining safety.
Solution Approach 2:
The system performs preliminary assessment of fault conditions before executing tripping actions. The controller analyzes the duration, magnitude, and pattern of overcurrent or fault conditions to determine whether immediate tripping is necessary or if the condition can be monitored and managed remotely. This preliminary evaluation prevents unnecessary trips that would reduce user convenience while maintaining adequate load protection.
Data Source
AI summary
A remote load switching circuit breaker includes a primary contact; a secondary contact in series with the primary contact and coupled to a secondary contact driving circuit, where the secondary contact is switched on and off remotely by a user using a user device communicatively coupled to the remote load switching circuit breaker via wireless communications technologies; a shunt element structured to measure a shunt voltage drop and to tap power from a line side of the primary contact; a control circuit comprising a controller and a communication module, the controller including a firmware; and a power supply and sensing circuit structured to supply power to the control circuit and to sense various voltages, where the secondary contact is fully powered by the power supply and sensing circuit.