Conductors sag monitoring by means of a laser based scanning measuring system: Experimental results

Golinelli, E.; Musazzi, S.; Perini, U.; Barberis, F.

doi:10.1109/sas.2012.6166308

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…Finally, using this angle and the distance from the monitor to the line, one can calculate the sag. In [17]- [19], the laser sag meter using an infrared source at 1550 nm was applied to calculate the sag and the clearance. Similar systems have been developed by the same authors for conductive defects [20], ice accumulation [21], winter icing and summer overheating [22,23].…”

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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“…Methods based on vibration sensors alone [13] without using the topology, weather or conductor information, can eliminate the room for errors from these sources. Optical methods can achieve good resolution in sag measurement along with high SNR, when interference filters are used [43]. The sensitivity of the sag measurement method can be enhanced through the use of CFBG [15].…”

Section: Comparison Among Sag Measurement Workmentioning

confidence: 99%

“…The accuracy of the laser based system is better than 5 cm. Another laser scanning based method to measure ground clearance for a transmission line was proposed in [43]. In this method, the scanning device is placed approximately 20 m away from the transmission line.…”

Section: Optical Techniquesmentioning

confidence: 99%

“…Most of the methods can measure sag in real time, whereas, some are not suitable for real‐time monitoring. For example, laser based methods presented in references [14] and [43] are not suitable for real‐time monitoring, as these require constant presence of personnel. In the case of placement of devices, some focus on installing them on the line, for instance, mmWave based, vibration based and DGPS/GPS based methods.…”

Section: Performance Evaluationmentioning

confidence: 99%

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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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“…Examples of point to point matching approaches are the following: iterative closest point (ICP) [5]. Iterative matching range point (IMRP) and the popular iterative dual correspondence (IDC) [6,7] are also in this category. These point to point methods can find the correct pose of the current scan in one step provided the correct associations are chosen.…”

Section: Introductionmentioning

confidence: 99%

Laser Scan Matching by FAST CVSAC in Dynamic Environment

Islam¹,

Reza²,

Uddin³

et al. 2013

IJISA

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Localization and mapping are very important for safe movement of robots. One possible way to assist with this functionality is to use laser scan matching. This paper describes a method to implement this functionality. It is based on well-known random sampling and consensus (RANSAC) and iterative closest point (ICP). The proposed algorithm belongs to the class of point to point scan matching approach with its matching criteria rule. The performance of the proposed algorithm is examined in real environment and found applicable in real-time application

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Conductors sag monitoring by means of a laser based scanning measuring system: Experimental results

Cited by 8 publications

References 1 publication

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

Laser Scan Matching by FAST CVSAC in Dynamic Environment

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