Magnetic-Core Arc Detection Across Multiple Power Lines
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Solution Overview
Problem
Existing systems face challenges in detecting electric arcs in multiple power lines without significantly increasing system size and cost when arc detection means are provided for each line.
Innovation Solution
An arc detection device that includes an electric current detector with a magnetic core through which multiple power lines extend, detecting combined currents to determine if an electric arc has occurred, and an arc determiner to analyze these currents for arc detection, without the need for individual arc detection in each line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arc detection means are provided in each of the plurality of power lines, then electric arcs occurring in the plurality of power lines can be detected, but the size and cost of the system would increase
Solution Approach 1:
The patent combines multiple arc detection functions into a single detection device by having multiple power lines pass through a common magnetic core. This allows the detection of combined currents from multiple power lines using one detector instead of requiring separate detectors for each power line, thereby reducing system size while maintaining arc detection capability.
Solution Approach 2:
The single detection device with magnetic core serves as a universal detector for multiple power lines. The magnetic core detects the combined magnetic fields from all power lines passing through it, enabling one device to perform the function of multiple separate detectors simultaneously.
2Reliability
If arc detection means are provided in each of the plurality of power lines, then electric arcs occurring in the plurality of power lines can be detected, but the cost of the system would increase
Solution Approach 1:
The patent merges multiple arc detection functions into a single detection device, reducing the total number of components needed. By having multiple power lines share a common magnetic core and detection circuitry, the system requires fewer detectors, cables, and mounting structures, thereby reducing overall system cost.
Solution Approach 2:
The universal detection device can monitor multiple power lines simultaneously, eliminating the need to purchase and install separate detection means for each power line. This multi-functional approach reduces component costs and installation expenses.
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
Effectively detects electric arcs in multiple power lines without increasing system size or cost, allowing for timely intervention to prevent damage.
Implementation Method 1
an electric current detector that includes a magnetic core through which two or more power lines included in the plurality of power lines extend, and detects combined currents flowing through the two or more power lines according to a magnetic field produced at the magnetic core
Data Source
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AI summary
An arc detection device (10a) is used in a system (1a) including one or more power sources, a plurality of converters that adjust the voltages of the one or more power sources, and a plurality of load devices. The one or more power sources and the plurality of converters are connected to each other by a plurality of power lines. The plurality of converters and the plurality of load devices are connected to each other by a plurality of power lines. The arc detection device (10a) includes: an electric current detector (20a) that includes a magnetic core (21a) through which two or more power lines included in the plurality of power lines extend, and detects combined currents flowing through the two or more power lines according to the magnetic field produced at the magnetic core (21a); and an arc determiner (30a) that determines, on the basis of the combined currents detected by the electric current detector (20a), whether an electric arc has occurred.