Voltage Sensor Commissioning via Electrical Parameter Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In polyphase electric power systems, accurately configuring voltage and current sensors is crucial for proper metering, but conventional methods often fail due to incorrect understanding of physical layouts, leading to incorrect sensor configurations and resulting in similar real, reactive, and apparent power values.
Innovation Solution
A method and apparatus that determine wiring configurations by measuring Line to Line voltage values, calculating voltage ratios, and diagnosing neutral swap and phase swap conditions using voltage measurements, allowing for correct sensor configuration and identification of virtual meters in various wiring configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional commissioning methods based on physical layout understanding are used, then the system can be configured, but incorrect configurations occur leading to similar power values that are difficult to distinguish
Solution Approach 1:
The patent changes the commissioning approach from relying on physical layout understanding to measuring and analyzing electrical parameters (voltage ratios, phase angles, power values). By using multiple electrical parameters to diagnose wiring configurations, the system achieves more accurate and reliable sensor configuration without depending on physical inspection or technician expertise.
Solution Approach 2:
The system implements feedback by measuring power values, voltage ratios, and phase angles, then using these measurements to diagnose and verify sensor configurations. The commissioning process continuously monitors electrical parameters and adjusts the configuration based on the measured feedback, ensuring correct wiring identification even when physical layouts are misunderstood.
2Productivity
If voltage sensors are wired to wrong phases or branch circuit current sensors are incorrectly grouped, then the system operates, but incorrect real, reactive, and apparent power values are calculated
Solution Approach 1:
The patent performs preliminary commissioning and diagnosis actions before final system operation. By measuring voltage ratios, phase angles, and power values during the commissioning phase and using these measurements to verify correct wiring configurations, the system prevents incorrect power calculations from occurring in the first place, rather than detecting errors after they have affected productivity.
3Ease of operation
If branch circuit current sensors are grouped based on physical layout, then the grouping process is simple, but incorrect grouping occurs when physical layout understanding is wrong
Solution Approach 1:
The patent replaces the mechanical/physical approach to sensor grouping (based on physical layout inspection) with an electrical measurement-based approach. By using voltage ratios, phase angles, and power measurements to automatically determine correct sensor groupings, the system maintains ease of operation through automated electrical diagnostics while achieving high grouping accuracy without requiring technicians to understand physical layouts.
Data Source
Figure 1A
Figure 1B
Figure 2~3
AI summary
A method and apparatus for detecting the wiring configuration of an electric power system based upon a particular voltage ratio that is determined for the electric power system. Also a method and apparatus for diagnosing voltage swap conditions in an electric power system. Finally, a method and apparatus for identifying virtual meters in an electric power system.