Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.5K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.5K
Line Protection with Impedance Relays01:27

Line Protection with Impedance Relays

82
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
82
Fault Types01:18

Fault Types

89
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
89
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

1.5K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
1.5K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

4.8K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
4.8K
Cable Subjected to a Distributed Load01:24

Cable Subjected to a Distributed Load

687
The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
687

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Epigenetics of bipolar disorder: a bibliometric landscape and visualization analysis.

Frontiers in psychiatry·2026
Same author

Delayed medical care experiences among patients with head and neck cancers: an exploratory study using patient journey mapping.

BMC health services research·2026
Same author

Screening of molecular signatures from microRNA and mRNA expression profiling related to the efficacy of the antidepressant duloxetine and analysis of their regulatory relationship.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie·2026
Same author

The GPI-anchored protein FocGPI1 plays a crucial role in regulating pathogenicity in the banana wilt pathogen Fusarium oxysporum f. sp. cubense tropical race 4.

International journal of biological macromolecules·2026
Same author

Mild hypothermia (35°C) reduces myocardial ischemia-reperfusion injury and attenuates hypoxia induced apoptosis of H9C2 cardiomyocytes by changing the phosphorylation level of Connexin43 (Cx43) protein.

African health sciences·2026
Same author

Early intensive blood pressure management after endovascular treatment in ischaemic stroke (IDENTIFY): a multicentre, open-label, blinded-endpoint, randomised controlled trial.

The Lancet regional health. Western Pacific·2025

Related Experiment Video

Updated: Jul 5, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

1.7K

A Novel Defect Detection Method for Overhead Ground Wire.

Yao Xiao1, Lan Xiong1, Zhanlong Zhang1

  • 1School of Electrical Engineering, Chongqing University, Chongqing 400044, China.

Sensors (Basel, Switzerland)
|January 11, 2024
PubMed
Summary
This summary is machine-generated.

Detecting defects in overhead ground wires is crucial for safety. This study introduces a novel magnetic flux leakage method, offering a reliable and efficient solution for accurate defect detection and quantification.

Keywords:
defectdetection devicemagnetic flux leakage signaloverhead ground wire

More Related Videos

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
11:34

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Published on: May 15, 2017

11.1K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

5.9K

Related Experiment Videos

Last Updated: Jul 5, 2025

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

1.7K
Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
11:34

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Published on: May 15, 2017

11.1K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

5.9K

Area of Science:

  • Electrical Engineering
  • Materials Science
  • Structural Health Monitoring

Background:

  • Overhead ground wires are vital for power line safety but susceptible to defects from corrosion and lightning.
  • Traditional defect detection methods (eddy current, ultrasonic, visual) suffer from low efficiency, high environmental demands, and poor reliability.

Purpose of the Study:

  • To develop a novel, efficient, and reliable defect detection technology for overhead ground wires.
  • To address the limitations of existing methods for identifying structural defects.

Main Methods:

  • Analysis of magnetic leakage characteristics around overhead ground wire defects.
  • Design of a novel defect detection device based on magnetic flux leakage.
  • Investigation of factors influencing magnetic flux leakage signals (air gap, lift-off, defect width, cross-sectional loss).

Main Results:

  • The proposed magnetic flux leakage method accurately locates and quantifies defects in overhead ground wires.
  • Experimental verification confirms the method's reliability and high efficiency.
  • The study establishes a foundation for preventing accidents caused by defective ground wires.

Conclusions:

  • The novel magnetic flux leakage technique provides a superior alternative for overhead ground wire defect detection.
  • This technology enhances safety and operational integrity of power transmission infrastructure.
  • Accurate and efficient defect detection is key to preventing catastrophic failures.