Remote Pick-Up Coil Degradation Detection via Signal Power Monitoring
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Solution Overview
Problem
Existing methods for testing pick-up coils in power line carrier systems are inconvenient, time-consuming, and inefficient, often requiring the de-energization of power lines and are prone to missed failures due to cross-talk, leading to potential prolonged service of faulty coils.
Innovation Solution
A method to monitor and test pick-up coils remotely without de-energizing the power line, using changes in signal power levels to detect coil degradation and employing alternative communication paths to aggregate data from multiple transmitters, allowing for real-time monitoring and identification of faulty coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional testing methods are used to test pick-up coils, then testing can be performed with basic equipment, but the power line must be de-energized and technicians must travel to remote locations, making the process time-consuming and inconvenient
Solution Approach 1:
The system enables self-diagnosis of pick-up coils through automated remote testing. The coils can be tested without human intervention at the remote location, as the testing equipment and procedures are automatically controlled from a remote central location, allowing the system to service itself
Solution Approach 2:
A communication interface acts as an intermediary between the remote pick-up coils and the central testing system. This intermediary enables remote command transmission and data retrieval, eliminating the need for technicians to physically travel to remote locations while maintaining testing capability
2Measurement precision
If multiple test frequencies are applied to each pick-up coil to ensure accurate testing, then coil functionality can be verified, but the testing process becomes extremely time-consuming when multiple coils are involved
Solution Approach 1:
The system combines multiple testing operations into a single automated process. Multiple pick-up coils are tested simultaneously or in rapid sequence through centralized control, merging what would otherwise be separate manual testing operations into one coordinated effort that maintains precision while improving efficiency
3Measurement precision
If technicians manually test each pick-up coil individually, then detailed inspection can be performed, but the process requires significant human resources and is prone to human error
Solution Approach 1:
The system replaces manual mechanical testing procedures with automated electronic testing and computer-controlled operations. The automated system applies test frequencies, measures responses, and analyzes results electronically, eliminating manual intervention while maintaining or improving detection precision
Solution Approach 2:
The system incorporates feedback mechanisms where test results from each coil are automatically analyzed and used to determine subsequent testing actions. The system can identify defective coils based on resonant frequency responses and automatically flag them for replacement, providing continuous feedback on system status
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
Enables efficient remote testing of pick-up coils, reducing the risk of missed failures and allowing for proactive maintenance, thereby improving the reliability of power line carrier systems by providing timely detection and replacement of faulty coils.
Implementation Method 1
The analog signal is received at a distant receiver through the use of pick-up coil
Implementation Method 2
verifies that the response from the pick-up coil at its resonant frequency is much less than at other test frequencies
Data Source
AI summary
Use of power line carrier communications which introduces a high frequency analog signal onto a cable used to convey power in a portion of an electric distribution network to send a data communication received at a distant receiver through the use of pick-up coil. Changes in the power level of signals received from a remote power line carrier transmitter may indicate that the pick-up coil receiving the signal is starting to degrade. The aggregation of certain power line carrier conveyed data communications about remote transformers and related equipment may be used to look for problems in this transmitter/receiver communication network. The disclosure includes the aggregation of data communications from one transmitter received at several different power line carrier pick-up coils through the phenomenon of cross talk or through the purposeful provision of data along an alternative communication path.