Self-Powered Power Sensor for Powerline Temperature Detection
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Solution Overview
Problem
Existing methods fail to accurately and timely detect overheating in powerlines, which can lead to fires and damage, as they rely on late-stage fire detection or ineffective temperature measurement due to natural heating and uneven heat distribution.
Innovation Solution
A system using self-powered power sensors (SPPS) that retrieves current and temperature readings, determines powerline temperature based on isothermal curves, and generates alerts when the temperature exceeds a predetermined threshold, incorporating a processing circuitry and memory to perform these functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fire and smoke detectors are used to detect powerline overheating, then detection capability is provided, but detection occurs only at late stage after smoke or fire has been produced
Solution Approach 1:
The patent uses thermal cameras to detect heat signatures from powerlines before they reach dangerous temperatures that would produce smoke or fire. By performing preliminary detection of abnormal heat patterns, the system provides early warning and allows preventive action before actual fire occurs, resolving the contradiction between having detection capability and avoiding late-stage detection.
2Measurement precision
If thermocouples are used to measure powerline temperature, then direct temperature measurement is achieved, but accuracy is reduced due to natural heating and uneven heat distribution
Solution Approach 1:
The patent employs thermal cameras as an intermediary device to measure powerline temperature from a distance without physical contact. This eliminates the interference of natural heating that occurs when thermocouples are attached to the powerline, as the thermal camera detects infrared radiation emitted by the powerline surface, providing accurate temperature measurement without being affected by the measurement process itself.
3Reliability
If powerlines are monitored continuously for temperature, then early detection of overheating is achieved, but energy consumption and system complexity increase
Solution Approach 1:
The patent uses thermal cameras to perform periodic or targeted scanning of powerlines rather than continuous monitoring of every point. The system detects abnormal heat patterns and raises alerts when thresholds are exceeded, providing sufficient monitoring reliability through selective measurement rather than exhaustive continuous monitoring, thus reducing system complexity and energy consumption while maintaining effective detection capability.
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
This solution enables early detection of potential overheating conditions, reducing the risk of fires and damage by providing timely alerts and improving the accuracy of powerline temperature measurement, even in challenging environments.
Implementation Method 1
as the temperature of a powerline increases, the insulation may become irreparably damaged... A simple and direct measurement of the temperature of a powerline, for example by using an attached thermocouple, is often not effective, as the powerlines naturally and safely heat up with increased current flowing therethrough
Implementation Method 2
determining a powerline temperature based on an isothermal curve of the powerline current reading and the SPPS temperature reading
Data Source
AI summary
A system and method for measuring powerline temperature based on self-powered power sensors (SPPS), including: retrieving a powerline current reading and an SPPS temperature reading from an SPPS; determining a powerline temperature based on an isothermal curve of the powerline current reading and the SPPS temperature reading; and generating an alert when the powerline temperature exceeds a predetermined threshold.