Non-Intrusive Power Quality Sensor for Behind-the-Meter Monitoring
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Solution Overview
Problem
Current power quality monitoring solutions are intrusive, requiring electrical expertise and intervention, and fail to address the majority of quality issues that occur behind the meter.
Innovation Solution
A non-intrusive power quality sensor that can be plugged into a standard power outlet, analyzing voltage quality and harmonics distortion, providing easy-to-understand data without the need for electrical knowledge, and optionally connecting to a base unit for further processing and alerting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current power quality monitoring solutions are used, then power quality can be monitored, but electrical expertise and intervention are required
Solution Approach 1:
The patent introduces an intermediary device (power quality sensor with plug-and-play design) that mediates between the complex power quality monitoring system and the end user. This sensor translates technical power quality parameters into user-friendly visual indicators, eliminating the need for users to possess electrical expertise while maintaining reliable monitoring capability
Solution Approach 2:
The patent replaces the traditional mechanical/electrical measurement approach with an optical measurement system. The sensor uses LED indicators to visually represent power quality status, substituting complex electrical measurement and interpretation mechanisms with simple optical signals that anyone can understand
2Loss of information
If intrusive monitoring methods are used, then comprehensive power quality data can be obtained, but system complexity and installation difficulty increase
Solution Approach 1:
The patent extracts the essential power quality monitoring function from the complex intrusive measurement system. By focusing on measuring voltage characteristics through a simple parallel connection (plug-and-play), it obtains sufficient power quality data without requiring system disassembly or complex installation procedures
Solution Approach 2:
The sensor is designed with universal applicability, working with standard power outlets and providing multiple functions (voltage measurement, harmonics detection, visual indication) through a single unified device. This multi-functionality reduces overall system complexity while maintaining comprehensive monitoring capability
3Measurement precision
If detailed power quality analysis is provided, then accurate diagnostics are achieved, but data interpretation becomes complex for non-experts
Solution Approach 1:
The patent uses color changes in LED indicators to represent different power quality states. This visual encoding system translates complex analytical data into intuitive color signals (e.g., green for normal, yellow for warning, red for alarm), enabling accurate diagnostics while maintaining ease of interpretation for non-experts
Solution Approach 2:
The patent creates a simplified visual copy of the complex power quality data. Instead of presenting raw measurement data, it generates an intuitive visual representation that copies the essential information in an easily understandable format, maintaining diagnostic accuracy while improving accessibility
Data Source
AI summary
A non-intrusive power quality sensor for to provide a simple solution for monitoring the quality of the power behind the meter. 80% of the quality issues happen behind the meter. Current power quality monitoring solutions are intrusive: they require the intervention of an electrical qualified person. The non-intrusive power quality sensor generally includes a device that can be plugged into a regular power outlet and acts as a power quality sensor.