Extracting of Sagging Profile of Overhead Power Transmission Line Via Image Processing

Molaei, Amir; Taghirad, Hamid D.; Dargahi, Javad

doi:10.1109/ccece.2018.8447592

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…No accuracy was provided. Similarly, in [28], a camera was placed close to the transmission line in a laboratory setting and the picture was converted to a binary image from which the shape of the line was extracted and sag can be calculated. The error was between +3% and -5%.…”

Section: Terrestrialmentioning

confidence: 99%

A survey of sag monitoring methods for power grid transmission lines

Chen

Xiao-lin

2023

IET Generation Trans & Dist

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The transmission line is a fundamental asset in the power grid. The sag condition of the transmission line between two support towers requires accurate real-time monitoring in order to avoid any health and safety hazards or power failure. In this paper, state-of-theart methods on transmission line sag monitoring are thoroughly reviewed and compared. Both the direct methods that use the direct video or image of the transmission line and the indirect methods that use the relationships between sag and line parameters are investigated. Sag prediction methods and relevant industry standards are also examined. Based on these investigation and examination, future research challenges are outlined and useful recommendations on the choices of sag monitoring methods in different applications are made.

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Section: Terrestrialmentioning

confidence: 99%

A survey of sag monitoring methods for power grid transmission lines

Chen

Xiao-lin

2023

IET Generation Trans & Dist

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“…Sag measurement error in this method is around 0.38%. Another image processing based technique was presented in [44] for measuring transmission line sag. To capture the image of the transmission line, a video camera of 640 × 480 resolution is placed at the ground and calibrated.…”

Section: Image Processing Basedmentioning

confidence: 99%

Measurement and monitoring of overhead transmission line sag in smart grid: A review

Mahin

Islam

Ahmed

et al. 2021

IET Generation Trans & Dist

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In a transmission line, sag is intentionally provided to relax the tension on the wire when placed between two terminals. However, thermal stress and extreme weather conditions can cause increases in transmission line sag, which can eventually damage transmission line infrastructure. In this regard, this paper examines a number of sag measurement techniques based on physical or optical properties and integrated with signal processing and communication technologies. The performance of different sag measurement methods is compared in terms of accuracy, precision and key feature. Several challenges and limitations of the existing sag measurement mechanisms are reported. A number of recommendations to address the identified challenges are made. Moreover, an efficient communication framework for sag related information exchange is proposed. This comprehensive review of the sag measurement techniques will facilitate the evolution of new and efficient real-time sag measurement and monitoring methods.

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“…There are many studies in the literature on sagging calculation and measurement [23], [37], [38]. However, although there are no studies in the literature that detect sagging with robots in the transmission line, there are some studies that solve sagging and other mechanical problems by robotic methods [5], [39]- [41].…”

Section: Sag Theorymentioning

confidence: 99%

Measurement of Power Line Sagging Using Sensor Data of a Power Line Inspection Robot

et al. 2020

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The operation of energy transmission lines with high efficiency without failure has great importance in today's electricity-dependent world. Problems that may occur in electricity transmission lines are failure cause of many operations not only industrial but also daily life. One of the most important causes of the problems encountered in power lines is the change in the amount of sagging. The change of sagging amount causes line breaks and losing energy efficiency. This problem, which is frequently encountered due to seasonal and climatic changes, is one of the major problems of continuity in the power line. The calculation of sag contains uncertain and variable parameters that can change seasonally, climatically and/or structurally such as weight per unit length of the conductor, the horizontal component of tension, total tension, etc. In this case, it is difficult to calculate a precise and reliable sag amount. The sagging of power lines is generally calculated theoretically or measured on-site by the personnel in charge. In this study, a new approach is presented to measure the sag amount by using sensor data of a power line inspection robot, precisely and reliably. The inspection robot moving on the power line can be remotely controlled and send sensor data. The sagging is measured with an error of less than 2 percent in the laboratory test field by using this technique.

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Extracting of Sagging Profile of Overhead Power Transmission Line Via Image Processing

Cited by 9 publications

References 9 publications

A survey of sag monitoring methods for power grid transmission lines

A survey of sag monitoring methods for power grid transmission lines

Measurement and monitoring of overhead transmission line sag in smart grid: A review

Measurement of Power Line Sagging Using Sensor Data of a Power Line Inspection Robot

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