Power Meter Wiring Verification Using Electrical Parameter Analysis
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Solution Overview
Problem
Existing intelligent electronic devices (IEDs) face challenges in verifying meter wiring setups without physical inspection, leading to inaccurate data and increased maintenance efforts due to the need for manual verification of voltage and current hookups and current transformer orientations.
Innovation Solution
A software-based system and method for meter setup verification, utilizing a client device or an integrated processor within the meter to perform wiring checks, generate notifications, and provide corrective instructions for incorrect wiring configurations, allowing for automatic or user-initiated reconfiguration of meter connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual physical inspection of meters is performed to verify wiring setup, then measurement precision and reliability are improved, but loss of time and productivity deteriorate due to the need for field technician dispatch
Solution Approach 1:
The patent replaces the mechanical/physical inspection process with an automated electronic verification system. The IED automatically checks wiring configuration by analyzing electrical parameters (voltage, current, phase angles) and comparing them against expected values, eliminating the need for physical field inspection while maintaining verification accuracy.
Solution Approach 2:
The IED performs self-verification of its own wiring setup by automatically monitoring electrical parameters and detecting anomalies. The system generates its own verification data and can even perform self-correction by adjusting transformation ratios or reconfiguring connections based on detected wiring issues, reducing dependency on external technicians.
2Reliability
If field technicians are dispatched for visual and physical inspection of meters, then reliability of data is improved, but device complexity and ease of operation worsen due to increased maintenance burden
Solution Approach 1:
The system continuously monitors electrical parameters and provides feedback about wiring status. When anomalies are detected (such as incorrect phase angles or unexpected voltage/current relationships), the system generates alerts and can automatically initiate correction procedures, creating a closed-loop verification system that maintains reliability without manual intervention.
Solution Approach 2:
The automated electronic verification system replaces the manual mechanical inspection process, transforming complex field maintenance operations into automated electronic analysis and correction, thereby reducing maintenance complexity while preserving data reliability.
3Productivity
If automated wiring verification is implemented, then productivity is improved by reducing physical inspections, but measurement precision may deteriorate without physical verification
Solution Approach 1:
The patent substitutes physical measurement methods with electronic parameter analysis. By measuring voltage, current, and phase angles electronically and comparing them against theoretical expectations for correct wiring, the system achieves accurate verification without physical inspection, maintaining precision while improving productivity.
Solution Approach 2:
The system uses electrical parameters (voltage, current, phase angles) as intermediaries to indirectly verify wiring correctness. Instead of directly observing physical connections, the system measures the electrical effects produced by the wiring configuration and infers wiring status from these measurements, achieving accurate verification through intermediary measurements.
Data Source
AI summary
Devices, methods and systems for meter setup verification are provided. In one aspect, a device is provided including a communication interface and at least one processor. The communication interface receives a wiring setup configuration of at least one electronic power meter and at least one measured and/or calculated parameter from the at least one electronic power meter. The at least one processor determines if the at least one electronic power meter is wired correctly based on the wiring setup configuration of the at least one electronic power meter and the at least one measured and/or calculated parameter from the at least one electronic power meter. The device may be implemented in a separate client device or in the at least one electronic power meter.