An IoT-based Sag Monitoring System for Overhead Transmission Lines

Hsu, Tsui Shan; Chiu, Huan Chieh; Yang, Yu; Tseng, Ching Ya; Lin, Ming Jhou; Wang, Jen Cheng; Jiang, Joe‐Air

doi:10.1109/gtdasia.2019.8715975

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…In [112] and [113], an Internet‐of‐Things based sag monitoring system was proposed, where the sag sensor contains a tri‐axial accelerometer installed on the line to measure the angle between the gravity and the z ‐direction, which was used to calculate the sag based on the catenary equation. Then this was sent using the ZigBee protocol wirelessly to the remote controller.…”

Section: Indirect Methodsmentioning

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: Indirect Methodsmentioning

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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“…There have been some other methods proposed in the existing research for sag measurement which utilize different techniques as compared to the aforementioned methods. For example, authors of [56] proposed an IoT based sag measurement system that uses a sensor module to serve the purpose. The sensor module is installed on the transmission line and it can measure different parameters, for instance, three axis acceleration, ambient temperature, humidity and illumination.…”

Section: Sag Measurement Techniquesmentioning

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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“…The method calculates magnetic field from a line conductor at the ground level and measure current to determine sag. An IoT based sag measurement system [12] uses a sensor module which is installed on the transmission line and can measure several parameters such as humidity, illumination etc. However, wireless electronic sensors are generally not suitable for adverse temperature conditions or longdistance coverage.…”

Section: Introductionmentioning

confidence: 99%

Extended Characterization of an Optical Sag Sensor for High-Temperature Low-Sag Lines

Singh,

Fusiek,

Niewczas

2023

IEEE Sens. Lett.

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This paper reports on the extended characterization of an optical sag sensor to verify its suitability for monitoring sag and temperature in high-temperature low-sag (HTLS) overhead lines. The sensor utilizes fiber Bragg grating (FBG) technology and can be integrated with the photonic voltage and current sensors that were previously developed by the authors. The response of the sag sensor was evaluated experimentally in the laboratory for temperatures from -20 ˚C to 180 ˚C and for forces up to 3 kN. The sensitivities of the sag sensor to force and to temperature estimated from the experiments were around 0.116 nm/kN and 30 pm/˚C, respectively. The change in the sag sensor sensitivity to force was approximately 25% within the considered temperature range and the change in the sag sensor sensitivity to temperature was 2% within the considered force range. It was demonstrated that the proposed sensor can provide force and temperature measurements within the considered ranges and should be suitable for HTLS lines.

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An IoT-based Sag Monitoring System for Overhead Transmission Lines

Cited by 10 publications

References 4 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

Extended Characterization of an Optical Sag Sensor for High-Temperature Low-Sag Lines

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