Wireless Remote Display for High Voltage Line Meter
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Solution Overview
Problem
Existing high voltage phasing meters are cumbersome for maintenance workers due to the need for close proximity to live power lines, inadequate lighting, and lack of data storage for analysis, making it difficult to read and record phase measurements and voltage status.
Innovation Solution
A high voltage line meter system with wireless remote display that uses independent high voltage probes to transmit data to a user interface device for real-time phase relationship determination and storage, allowing for remote monitoring and data logging, and enabling bidirectional communication for functionality selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If workers use contact type meters with hot sticks to measure high voltage lines, then safety is improved by maintaining distance, but reading difficulty increases due to inadequate lighting and distance from display
Solution Approach 1:
The display is moved from the probe location to a remote location along the same measurement axis, allowing the worker to maintain distance for safety while having the display positioned where it can be easily read without inadequate lighting issues
Solution Approach 2:
A wireless communication system acts as an intermediary between the probe and display, transmitting measurement data without requiring physical connection or close proximity, thus enabling both safety and ease of reading
2Measurement precision
If workers use traditional meters for high voltage line measurement, then measurement capability is provided, but data storage and analysis capacity is lacking
Solution Approach 1:
The system creates digital copies of measurement data and stores them in memory, allowing multiple readings to be retained and analyzed later without losing any measurement information, thus preventing information loss while maintaining measurement precision
3Reliability
If non-contact cordless meters are used, then safety is improved by avoiding contact with live lines, but reading must still be taken during maintenance and distance from display remains an issue
Solution Approach 1:
The display is relocated to a remote position along the measurement axis, enabling workers to maintain safe distance from live lines while having the display positioned for easy reading without the constraints of traditional meter placements
4Device complexity
If probes are made short for portability, then device complexity is reduced, but measurement capability is limited and extension with hot sticks is required
Solution Approach 1:
The measurement system is divided into separate components - a compact probe for portability and a remote display for versatility - connected through wireless communication, allowing the probe to remain simple while the system as a whole gains extended measurement capability
Data Source
AI summary
A system for measuring phase attributes of high voltage electrical lines comprises first and second high voltage probes. Each of the probes comprises a sensing element for selectively measuring voltage of a high voltage electrical line, a processing device for detecting zero crossings of the measured voltage and applying a time tag to the zero crossings, and storing samples of the amplitude and time tagged zero crossings. A transceiver transmits storage samples. A user interface device is remote from the first and second high voltage probes and comprises a transceiver for receiving transmitted storage samples. A memory stores received samples of the time tagged zero crossings for the first and second high voltage electrical lines. A processor is operatively associated with the memory for determining phase relationships between the first and second high voltage electrical lines. A display displays the phase relationships.