U-Shaped Busbar Sensor with Segmented Dielectric Body

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Solution Overview

Problem

Existing current and voltage sensors are too large and heavy, making them difficult to rapidly install on live busbars, as they have bulky designs that hinder efficient integration.

Innovation Solution

A construction system featuring a U-shaped conducting bar embedded in a solid body of dielectric material with sensors and electrical components, including Rogowski coils and capacitive sensors, positioned around the bar to minimize size and weight, and equipped with screening elements to shield against external electrical fields.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional current and voltage sensor designs are used, then measurement functionality is achieved, but the sensors have large overall dimensions and heavy weight that prevent rapid installation on live busbars

Engineering Contradiction:

Improveinstallation speedVSAvoidsensor weight

Core Design Contradiction:

Ease of operationVSWeight of stationary object

Solution Approach 1:

The sensor is divided into separate functional modules: a U-shaped conducting bar for current measurement, a separate coreless coil for voltage measurement, and individual screening elements. This segmentation allows each component to be optimized independently and facilitates rapid assembly on live busbars without requiring a bulky integrated structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sensor configuration transitions from traditional three-dimensional bulky structures to a planar arrangement where the U-shaped bar and coil are positioned in specific spatial relationships. The coreless coil is placed in vertical position between the arms of the U-shaped bar, creating a compact configuration that reduces weight while maintaining measurement functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If traditional sensor designs are used, then measurement functionality is achieved, but the sensors have large overall dimensions that prevent rapid installation on live busbars

Engineering Contradiction:

Improveinstallation speedVSAvoidsensor length

Core Design Contradiction:

Ease of operationVSLength of stationary object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coreless coil is positioned within the spatial envelope formed by the U-shaped conducting bar arms, effectively nesting the voltage measurement component within the current measurement structure. This nested arrangement minimizes the overall sensor dimensions while maintaining both measurement functions.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If traditional sensor designs are used, then measurement functionality is achieved, but the sensors are very heavy because of their extremely large bulk

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidsensor weight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The screening function is extracted as separate screening elements that can be positioned around the U-shaped bar and coil without adding significant weight. This extraction allows the measurement components to be minimized in size while maintaining measurement accuracy through the addition of lightweight screening elements only where needed for electromagnetic interference protection.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The screening elements are designed as thin-walled structures that provide electromagnetic shielding without adding substantial weight. These thin film-like screening components enclose the sensitive measurement areas while maintaining a lightweight overall sensor construction.

Inventive Principle:

Principle #30Flexible shells and thin films

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables compact and lightweight current and voltage sensors that can be easily installed on busbars while maintaining effective signal transmission and immunity to surrounding electrical interference.

Implementation Method 1

sensors for detecting the magnetic field generated by said U-shaped conducting bar

Methodology Applied

Scientific EffectMagnetic field detection: Magnetic Field

Implementation Method 2

electrical sensors for detecting the electrical field generated by said U-shaped conducting bar

Methodology Applied

Scientific EffectElectrical field detection: Electric Field

Implementation Method 3

the solid body 100 can comprise a screening element 150/ 530 designed to form one or more screened chambers

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentEP2366108B2Construction system for an electrical current and voltage sensor

Publication Date: 2016.08.24 GREEN SEAS VENTURES

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AI summary

A construction system for a current and/or voltage sensor (100), intended for use in combination with a busbar (B), extends along a longitudinal axis (Y), thus forming a proximal portion and a distal portion with respect to said busbar (B), and said sensor (100) comprises a solid body (110) of dielectric material intended to contain and/or incorporate electrical members, and more specifically a U- shaped conducting bar (120) extending longitudinally along its longitudinal axis (U-120) and one or more sensors (130/ 250/ 360/ 450/ 510-520/ 610) are placed in the proximity of said U-shaped conducting bar (120).