Power Line Break Detection Using E-Field and Current Correlation

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Solution Overview

Problem

Existing power line monitoring systems fail to detect conductor breaks that do not activate protection equipment, posing a risk of wildfires due to downed conductors creating arcs near vegetation.

Innovation Solution

Distribution line monitoring sensors with energy harvesting devices that provide a constant current output, equipped with e-field and current sensors, processors, and wireless interfaces, capable of cross-correlating e-field and current data to detect line breaks and send alerts, and a server system for further analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional protection equipment is used to monitor power lines, then it can detect major faults, but it fails to detect conductor breaks that do not activate protection equipment

Engineering Contradiction:

Improvefault detection capabilityVSAvoidconductor break detection

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

An e-field sensor is introduced as an intermediary detection device to sense electric field changes caused by conductor breaks. The sensor detects the absence or reduction of e-field signal when a conductor breaks, providing detection capability for faults that traditional protection equipment cannot detect.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional mechanical/electrical protection equipment with an e-field sensing system. Instead of relying on current flow to activate protection devices, the system uses electronic field sensing to detect conductor breaks, enabling detection of faults that do not generate sufficient current to activate traditional protection equipment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If downed conductors are not detected, then the system operates normally, but wildfires may occur due to arcs near vegetation

Engineering Contradiction:

Improvesystem operation continuityVSAvoidwildfire risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The e-field sensor continuously monitors for conductor breaks before downed conductors can cause wildfires. By detecting the loss of e-field signal in advance, the system enables proactive response to prevent arcs near vegetation from igniting wildfires.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides real-time feedback through continuous e-field monitoring. When a conductor break is detected, the system generates an alert that triggers protective actions, creating a feedback loop that prevents harmful effects from occurring.

Inventive Principle:

Principle #23Feedback

3Reliability

If e-field sensors are deployed to detect conductor breaks, then real-time fault detection is achieved, but device complexity increases

Engineering Contradiction:

Improveconductor break detection accuracyVSAvoidsensor system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The e-field sensor serves multiple functions: detecting conductor breaks, monitoring power line health, and providing data for predictive analytics. This multi-functionality reduces the need for separate specialized devices, thereby managing system complexity while maintaining high detection accuracy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 real-time detection of conductor breaks without activation of protection devices, reducing the risk of wildfires by initiating power cuts and providing proactive management of power line health.

Implementation Method 1

determine e-field key parameters based on e-field data, representing electrical field produced by a power line

Methodology Applied

Scientific EffectElectrical field: Electric Field

Implementation Method 2

determine current key parameters based on current data, representing current through the power line

Methodology Applied

Scientific EffectElectrical current: Conduction (electrical)

Implementation Method 3

cross-correlate the e-field key parameters and the current key parameters to determine a line break

Methodology Applied

Scientific EffectCross-correlation:

Data Source

PatentUS20260072069A1Systems and methods for power line fault detection

Publication Date: 2026.03.12 SENTIENT TECH HLDG LLC

AI summary

A power distribution monitoring system (100) is provided that can include a number of features. The system can include a plurality of monitoring devices configured to attach to conductor(s) on a power grid distribution network. In some embodiments, a monitoring device is disposed on each conductor of a three-phase network and utilizes a complex platform of software and hardware to detect faults and disturbances that can be analyzed to determine or predict the risk of wildfires.