Terminal Temperature Sensing for Noise-Resistant Arc Detection
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Solution Overview
Problem
Current methods for arc detection, particularly in high voltage/power lines, face challenges due to noise from current flowing in cables and surrounding equipment, making it difficult to isolate arc signatures effectively.
Innovation Solution
An arc detection assembly that includes first and second conductors with terminal ends that form an electrical connection, coupled with a temperature sensing system. This system comprises a temperature sensor in contact with the terminal ends and a temperature monitoring circuit that determines if an increase in temperature indicates an arcing condition, allowing for timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnetic or acoustic methods are used for arc detection, then arc detection capability is provided, but noise from current flowing in cables and surrounding equipment makes it difficult to isolate arc signatures
Solution Approach 1:
The patent extracts the temperature sensing function from the electrical connection elements themselves by incorporating temperature sensors directly into the terminal ends or conductors. This allows direct measurement of temperature at the arc source location, eliminating the need to detect arc signatures through noisy electromagnetic or acoustic signals that require isolation from background noise.
Solution Approach 2:
The patent introduces temperature as an intermediary parameter to detect arcing conditions. Instead of directly detecting electromagnetic or acoustic arc signatures that are obscured by noise, the system uses temperature increase as a mediator indicator that reliably signifies arcing events, providing clear and unambiguous detection.
2Measurement precision
If temperature sensors are integrated into electrical connection elements, then direct temperature measurement at connection points is achieved, but device complexity increases
Solution Approach 1:
The patent merges the temperature sensing function with the electrical connection elements by integrating temperature sensors directly into the terminal ends or conductors. This combination allows the same component structure to serve both electrical connection and temperature monitoring functions, achieving direct temperature measurement at connection points without adding separate complex sensing systems.
Solution Approach 2:
The electrical connection elements are designed with multi-functionality, serving both as electrical conductors and as platforms for temperature sensing. The terminal ends or conductors themselves become the mounting structure for temperature sensors, eliminating the need for separate sensor housings or mounting mechanisms and reducing overall device complexity.
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 solution effectively detects arcing conditions by sensing temperature increases and differentiating them from non-arcing events, thereby providing reliable arc detection and enabling prompt action to prevent electrical fires.
Implementation Method 1
a temperature sensor disposed in contact with one of the first and second terminal ends and configured to sense a temperature of the one of the first and second terminal ends
Implementation Method 2
the temperature sensor includes a thermally conductive element disposed in contact with the one of the first and second terminal ends and a temperature sensing element disposed in contact with the thermally conductive element and configured to sense the temperature of the one of the first and second terminal ends via the thermally conductive element
Implementation Method 3
An arc fault is a high-power discharge of electricity between two or more conductors. This discharge generates heat, which can break down the wire's insulation and trigger an electrical fire.
Data Source
AI summary
An arc detection assembly is provided and includes first and second conductors including first and second terminal ends, respectively, which are engageable to form an electrical connection and a temperature sensing system. The temperature sensing system includes a temperature sensor disposed in contact with one of the first and second terminal ends and configured to sense a temperature of the one of the first and second terminal ends and a temperature monitoring circuit. The temperature monitoring circuit is coupled to the temperature sensor and configured to determine when the temperature sensor senses an increase in temperature of the one of the first and second terminal ends and to determine whether the increase in temperature is indicative of an arcing condition of the electrical connection.