Robotic Circuit Breaker Racking for Arc Flash Risk Reduction
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Solution Overview
Problem
The process of removing and installing medium-voltage circuit breakers in electrical substations is inefficient and poses a risk of arc flashes due to manual handling, which can expose operators to electrical hazards and hinder efficient maintenance and fault locating activities.
Innovation Solution
A robotic system with a clamping arrangement, latch, and release mechanism, combined with sensor technology for autonomous or semi-autonomous operation, is used to securely move circuit breakers in and out of electrical cabinets, ensuring safe and efficient racking processes by aligning with features and using solenoids for movement and locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual racking of circuit breakers is performed, then operators can directly control the process, but operators are exposed to arc flash hazards and the process is time-consuming
Solution Approach 1:
A robotic system acts as an intermediary between the operator and the circuit breaker racking process. The robot executes racking operations autonomously or semi-autonomously, eliminating direct operator exposure to arc flash hazards while maintaining operational control through programming and monitoring interfaces.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated robotic system equipped with specialized end effectors. The robotic system uses automated mechanisms for latching, clamping, and moving circuit breakers, substituting human mechanical actions with controlled automated processes that reduce safety risks.
2Device complexity
If manual racking processes are used, then equipment complexity is low, but productivity is reduced and maintenance efficiency is hindered
Solution Approach 1:
The robotic system is designed to perform racking operations autonomously without requiring continuous human intervention. The system can independently position itself, engage latches, clamp circuit breakers, and execute racking movements, enabling self-service operation that significantly improves productivity while maintaining reasonable system complexity through modular design.
3Ease of operation
If circuit breakers are moved manually with caster wheels, then handling is simple, but precise alignment and secure positioning are difficult to achieve
Solution Approach 1:
The patent replaces manual pushing and positioning with automated robotic manipulation. The robotic system uses sensors, actuators, and control algorithms to achieve precise alignment and positioning of circuit breakers during racking operations, ensuring accurate placement that cannot be reliably achieved through manual handling alone.
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 enhances safety by reducing operator exposure to arc flashes and improves efficiency by automating the racking process, allowing for precise alignment and secure handling of circuit breakers, facilitating maintenance and fault detection without manual intervention.
Implementation Method 1
A robotic system with a clamping arrangement, latch, and release mechanism, combined with sensor technology for autonomous or semi-autonomous operation, is used to securely move circuit breakers in and out of electrical cabinets
Implementation Method 2
The system may include a clamping arrangement with one or more movable jaws configured to secure a portion of the circuit breaker therebetween
Data Source
AI summary
A robotic system is configured to autonomously or semi-autonomously rack a circuit breaker from an electrical cabinet or other electrical-connection station. The robotic system may perform work on circuit breakers, ground-and-test devices, or other electrical equipment.