Intermittent Electrical Fault Detection Using Signal Mismatch Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for detecting intermittent electrical faults in electrical systems are inefficient, often requiring system shutdown, are difficult to implement due to hard-to-reach locations, and prone to false readings due to reflection issues in complex network architectures, especially when using high voltage pulses.
Innovation Solution
A fault determination system using transmitters to send signals to a single receiver, analyzing signal mismatches to detect and locate faults without high voltage signals, allowing for installation at any network location and reducing false positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual or instrument-aided inspection methods are used to detect electrical faults, then the system can identify faults, but the system operation must be suspended causing loss of revenue and reducing productivity
Solution Approach 1:
The system performs preliminary fault detection by continuously monitoring electrical parameters during normal operation. The fault detection apparatus is installed in advance and automatically detects faults without requiring subsequent system shutdown for inspection, thus maintaining productivity while ensuring measurement precision.
Solution Approach 2:
The system performs self-diagnosis through automatic fault detection and localization. The apparatus monitors itself and the electrical network continuously, identifying faults without external intervention or system suspension, thereby maintaining both detection precision and operational continuity.
2Measurement precision
If inspection equipment is placed in hard-to-reach locations to detect faults, then fault detection coverage is improved, but the difficulty of installation and maintenance increases
Solution Approach 1:
The fault detection system is divided into modular components that can be distributed at different locations in the electrical network. Each module independently performs detection functions, allowing installation in hard-to-reach locations without requiring complex integrated equipment, thus improving detection coverage while maintaining ease of installation and maintenance.
Solution Approach 2:
The fault detection apparatus is designed as a universal device that can be installed at various locations in the electrical network and performs multiple functions including fault detection, localization, and monitoring. This multi-functionality reduces the need for specialized equipment at each location, simplifying installation and maintenance while improving detection coverage.
3Measurement precision
If high voltage pulses are transmitted to detect faults using reflectometry, then fault location can be determined, but false readings occur due to reflections at branch points in complex network architectures
Solution Approach 1:
The system changes the detection parameters by using low-voltage continuous monitoring instead of high-voltage pulse transmission. This parameter change eliminates the reflection issues that cause false readings at branch points, while still achieving accurate fault location through continuous electrical parameter analysis and comparison with baseline values.
Solution Approach 2:
The system replaces the mechanical pulse transmission method with an electrical field-based continuous monitoring approach. This substitution eliminates the physical reflection phenomenon that occurs with pulse waves at branch points, providing reliable fault detection without false positives while maintaining location accuracy.
4Measurement precision
If the system is shut down to perform fault inspection, then accurate fault detection is possible, but operational downtime increases reducing productivity
Solution Approach 1:
The fault detection apparatus operates continuously during normal system operation, maintaining useful detection action without interruption. The system continuously monitors electrical parameters and compares them against baseline values, enabling accurate fault detection while the system remains operational, thus eliminating downtime while preserving detection accuracy.
Solution Approach 2:
The system performs preliminary fault detection and localization during normal operation before faults become critical. By continuously monitoring and identifying anomalies in advance, the system maintains detection accuracy while preventing the need for emergency shutdowns, thereby reducing time loss while preserving measurement precision.
Data Source
AI summary
Signals are transmitted from at least one transmitter that is positioned in an electrical network. The signals that have been transmitted are received a single receiver positioned within the electrical network. At the single receiver, the received signals are analyzed and a determination from the analyzing the received signals is made as to whether a fault has occurred in the electrical network and the approximate location of the fault.