Electrical Fault Detection With Waveform Analysis and Circuit Identification
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Solution Overview
Problem
Existing electrical safety devices are inadequate in detecting all electrical issues, often resulting in nuisance tripping and difficulty in identifying the source of faults, leading to potential damage and fires.
Innovation Solution
An electrical safety protection device connected to multiple circuits within a distribution board, equipped with voltage and current sensing components, a microcontroller, and communication components, which monitors electrical signatures, identifies faults, and provides real-time alerts and advice to users and technicians.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional circuit breakers are used to protect against overcurrent and ground faults, then basic electrical safety is provided, but arcing faults below trip thresholds cannot be detected
Solution Approach 1:
The patent replaces conventional mechanical circuit breaker trip mechanisms with electronic sensing and analysis systems. The device uses current sensors to detect electrical parameters and a microprocessor to analyze waveforms, enabling detection of arcing faults that occur below the trip thresholds of traditional mechanical breakers. This substitution allows for more precise fault detection while maintaining safety protection.
Solution Approach 2:
The invention changes the detection parameters from simple current magnitude thresholds to complex waveform analysis including frequency spectrum analysis. By analyzing the spectral content and temporal characteristics of current waveforms, the system can identify arcing faults that conventional magnitude-based trip mechanisms miss. This parameter transformation enables detection of subtle fault conditions without causing nuisance tripping.
2Reliability
If electrical safety devices trip on detected faults, then protection is provided, but the source of the problem becomes difficult to identify
Solution Approach 1:
The system provides continuous feedback about electrical system conditions through a user interface that displays real-time status and fault information. When a fault is detected, the device provides specific information about the fault type, location, and characteristics, enabling users to quickly identify and address the problem source without guessing or extensive troubleshooting.
Solution Approach 2:
The patent introduces an intermediary communication system between the detection device and the user. This intermediary provides detailed fault diagnostics and location information, acting as a bridge that translates complex electrical fault data into actionable information for users, thereby reducing the loss of fault location information.
3Reliability
If multiple detection methods are implemented to detect all electrical faults, then comprehensive fault coverage is achieved, but device complexity increases
Solution Approach 1:
The patent implements a universal detection platform that uses a single microprocessor-based system to perform multiple detection functions. The same hardware platform executes different analysis algorithms to detect various fault types including arcing, overheating, and insulation degradation. This multi-functional approach achieves comprehensive fault coverage without proportionally increasing device complexity, as one system performs multiple roles.
Solution Approach 2:
The detection system is segmented into modular functional blocks: current sensing, voltage sensing, waveform acquisition, spectral analysis, and fault determination. Each module performs a specific function and can be independently optimized. This segmentation allows comprehensive fault detection capability while managing complexity through modular design, where each segment handles a specific aspect of the detection task.
Data Source
AI summary
The embodiments provide an electrical safety protection device and method for detecting faulty electrical circuits with fault identification, fault classification and alert system wherein the device is installed between the incoming power supply and the electrical appliance, receives incoming power supply through the input switch and is provided to the voltage sense, current sense, high frequency current sense and core balanced transformer components, the output of these sensor components are provided to a filter component and further the filtered voltage values are provided to the microcontroller wherein the microcontroller analyses these received voltage signals, makes calculations and outputs signals to solenoid present in the input switch determining whether to isolate the incoming power supply or not. The solenoid that works as a switch, switches the incoming power supply into ON or OFF state depending upon the voltage values and instructions received and processed by the microcontroller.