Power Line Arc Detection Using Device Operation Context
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Solution Overview
Problem
Existing arc detection systems often result in false detection of arc faults, which can lead to unnecessary power shutdowns and user inconvenience.
Innovation Solution
An arc detection system comprising a first obtainment unit for measuring current or voltage in a power line, a second obtainment unit for obtaining operation information of devices connected to the power line, and a determination unit that uses this information to accurately determine whether an arc fault has occurred, thereby reducing false detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arc detection is performed using only voltage and current measurements, then arc faults can be detected, but false detection occurs due to electrical noise and normal operation fluctuations
Solution Approach 1:
The patent introduces operation information as an intermediary element that mediates between the electrical measurements and the arc fault determination. The determination unit uses operation information (such as device on/off status, load changes) to contextualize voltage and current fluctuations, distinguishing between normal operational variations and genuine arc faults. This intermediary information layer resolves the contradiction by providing additional context that prevents false detections while maintaining reliable arc fault detection.
2Measurement precision
If multiple parameters are monitored to improve detection accuracy, then false detection is reduced, but system complexity increases
Solution Approach 1:
The determination unit is designed to perform multiple functions: it analyzes voltage measurements, current measurements, and operation information simultaneously to make arc fault determinations. This multi-functional approach consolidates what would otherwise require separate detection systems into a single integrated unit, reducing overall system complexity while improving detection accuracy through comprehensive parameter monitoring.
Data Source
AI summary
An arc detection system includes a first obtainment unit, a second obtainment unit, and a determination unit. The first obtainment unit obtains a measurement result of current flowing in a power line to which power is supplied from a power supply or a measurement result of voltage in the power line. The second obtainment unit obtains operation information about operation of a device connected to the power line. The determination unit determines whether or not an arc fault has occurred in the power line based on the measurement result obtained by the first obtainment unit and the operation information obtained by the second obtainment unit.