Wireless High Voltage Voltmeter Phase Measurement

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Solution Overview

Problem

Existing high-voltage voltmeters are limited in measuring phase angle difference and are restricted by cord length, preventing accurate voltage measurements over widely separated points in power distribution and transmission systems.

Innovation Solution

A high voltage digital voltmeter and wireless phaser system using microprocessors with wireless communication between probes to measure line-to-ground voltage and determine phase angle difference, allowing for accurate voltage and phase measurements over greater distances without physical cords.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If corded voltmeters are used to measure voltage between spaced-apart points, then voltage measurement capability is provided, but the cord length limits the maximum distance between measurement points

Engineering Contradiction:

Improvedistance between measurement pointsVSAvoidcord length limitation

Core Design Contradiction:

Length of stationary objectVSEase of operation

Solution Approach 1:

The patent replaces the mechanical cord connection system with a wireless communication system. Each voltmeter/phaser unit independently measures voltage and communicates data wirelessly to a display unit, eliminating the physical cord that limited measurement distance. This allows operators to measure voltage between points much farther apart than the cord length would permit.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If dual display voltmeters with cable connections are used, then voltage measurement between probes is enabled, but phase angle difference measurement capability is lost

Engineering Contradiction:

Improvephase angle difference measurementVSAvoidphase angle information

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent divides the measurement system into separate functional units: each voltmeter/phaser probe independently measures both voltage magnitude and phase information, then transmits these measurements wirelessly. This segmentation allows each probe to capture complete electrical parameters without relying on cable-based differential measurements, enabling phase angle difference calculation through wireless data comparison.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If corded voltmeters are used, then stable electrical connection is maintained, but mobility and operational flexibility are reduced

Engineering Contradiction:

Improveoperational flexibilityVSAvoidconnection stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces the mechanical cord connection with wireless communication technology. Each voltmeter/phaser unit maintains stable electrical connections internally while communicating measurement data wirelessly to the display unit. This eliminates the physical cord that constrained operator mobility while maintaining measurement reliability through robust wireless communication protocols and redundant data transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9658265B2High voltage digital voltmeter and wireless phaser

Publication Date: 2017.05.23 GREENLEE TEXTRON INC

AI summary

A high voltage digital voltmeter and wireless phaser includes first and second voltmeters/phasers. Each voltmeter/phaser has a probe for accessing a point in a circuit, circuitry connected to the probe and including a microprocessor, and a ground reference associated with the circuitry. Each microprocessor is programmed to measure line-to-ground voltage of the respective voltmeter/phaser. This information is shared between the microprocessors and is used to determine voltage measurements and phase angle difference.