Sensory Assembly System for Power Line Ground Current Monitoring
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Solution Overview
Problem
Current power line monitoring systems are unable to calculate ground currents, which are essential for detecting faults and ensuring power system integrity, and they pose risks due to direct wiring and vulnerability to lightning strikes.
Innovation Solution
A sensory assembly system connected to each phase of a power line, comprising a sensory transceiver that broadcasts digital representations of voltage and current waves, a common transceiver with a microprocessor for analysis, and a precision timing device for synchronizing readings across phases, allowing for the calculation of ground or neutral current and instantaneous voltage and current differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a directly wired monitoring system is used to measure ground currents, then measurement capability is improved, but system safety deteriorates due to vulnerability to lightning strikes and short circuits
Solution Approach 1:
The patent introduces wireless communication as an intermediary between the power line monitoring point and the monitoring equipment. Sensors on the power line transmit data wirelessly to a remote receiver, eliminating direct physical wiring that exposes equipment to lightning and short circuit damage while maintaining measurement capability.
2Measurement precision
If individual phase monitoring is implemented, then phase current measurement is improved, but ground current calculation capability deteriorates
Solution Approach 1:
The patent combines individual phase monitoring data with synchronized timing information to enable ground current calculation. By merging measurements from all phases with precise time synchronization, the system reconstructs ground current that would be lost in individual phase monitoring alone.
Solution Approach 2:
The system performs preliminary synchronization of timing signals across all phases before measurement. This preliminary action of establishing a common time reference enables subsequent ground current calculation by ensuring all phase measurements are temporally aligned for accurate synthesis.
3Reliability
If wireless monitoring is used to improve system safety, then equipment protection is improved, but ground current calculation capability deteriorates
Solution Approach 1:
The system uses feedback through precise timing synchronization to maintain measurement accuracy in wireless configuration. Timing signals are transmitted wirelessly and used to synchronize all phase measurements, providing feedback that enables accurate ground current calculation despite the wireless architecture.
Data Source
AI summary
A sensory assembly system and method for monitoring power lines. The system comprises a plurality of sensory assemblies each connected to a phase of a power line, each comprising a sensory transceiver that broadcasts a signal comprising a digital representation of a voltage wave and a current wave on a single phase of a power line, and a common assembly comprising a common transceiver for receiving said signal, and a microprocessor for analyzing said signal, and a precision timing device for directing said common transceiver to send signals to each of said sensory assemblies synchronizing sensory assembly readings on a phase of a power line. The microprocessor analyzing timed signals synchronized for a plurality of phases by determining the net real time sum of the current of the plurality of phases to determine ground or neutral current and for determining instantaneous current and voltage between the plurality of phases.