Dynamic Line Rating—An Effective Method to Increase the Safety of Power Lines

Rácz, Levente; Németh, Balázs

doi:10.3390/app11020492

Cited by 15 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…OTLM is a high-end monitoring sensor that measures conductor inclination, phase current, vibrations, etc. The limitation of this device is its minimal operational phase current, 65 A [15].…”

Section: Mfeh-magnetic Field Energy Harvestingmentioning

confidence: 99%

Energy Harvesting Device for Smart Monitoring of MV Overhead Power Lines—Theoretical Concept and Experimental Construction

Bendík,

Cenký,

Hromkovič

2023

Sensors

View full text Add to dashboard Cite

Modern technological advancements have opened avenues for innovative low-energy sources in construction, with electric field energy harvesting (EFEH) from overhead power lines serving as a prime candidate for empowering intelligent monitoring sensors and vital communication networks. This study delves into this concept, presenting a physical model of an energy harvester device. The prototype was meticulously designed, simulated, constructed, and tested, to validate its foundational mathematical model, with implications for future prototyping endeavors. The findings illustrate the potential of harnessing ample power from this device when deployed on medium-voltage (MV) overhead power lines, facilitating the monitoring of electric and meteorological parameters and their seamless communication through the Internet of Things (IoT) network. The study focused on the medium voltage applications of the harvester. Two dielectric materials were tested in the present experiments: air and polyurethane. The measurement results exhibited satisfactory alignment, particularly with the air dielectric. Nevertheless, deviations arose when employing polyurethane rubber as the dielectric, due to impurities and defects within the material. The feasibility of generating the requisite 0.84 mW output power to drive process electronics, sensors, and IoT communications was established. The novelty of this work rests in its comprehensive approach, cementing the theoretical concept through rigorous experimentation, and emphasizing its application in enhancing the efficacy of overhead power line monitoring.

show abstract

Section: Mfeh-magnetic Field Energy Harvestingmentioning

confidence: 99%

Energy Harvesting Device for Smart Monitoring of MV Overhead Power Lines—Theoretical Concept and Experimental Construction

Bendík,

Cenký,

Hromkovič

2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Another technology that can provide an increment in grid utilisation and improve the wind power integration is DLR, also known as dynamic thermal rating and real time thermal rating. DLR is a technology that enables a dynamic increase of the ampacity in overhead transmission lines [52]- [55]. Ampacity, or ampere capacity, is defined as the maximum constant current that still meets the design, security, and safety criteria of the transmission line.…”

Section: Dynamic Line Ratingmentioning

confidence: 99%

Optimal Utilisation of Grid Capacity for Connection of New Renewable Power Plants in Norway

Stave

Dynge

Farahmand

et al. 2021

2021 International Conference on Smart Energy Systems and Technologies (SEST)

View full text Add to dashboard Cite

and Technology (NTNU) and it constitutes the completion of the MSc programme Energy and Environmental Engineering. The thesis was supervised by Associate Professor Ümit Cali and co-supervised by Professor Magnus Korpås, and concluded during the spring semester of 2021.The thesis was done in collaboration with Statnett, who provided exiting topic and research discussions that helped determine the scope of the thesis. Additionally, good observations and local system data were provided by Nordkraft. As such, there are several persons to be acknowledged for their assistance with this thesis.First of all, I would like to express my deep gratitude to my supervisor Ümit Cali for his strong commitment and interest in both this thesis and my experience of the process being as good and educational as possible. I have no doubt that his knowledge and guidance have improved the resulting thesis and my learning outcome. I would also like to thank my co-supervisor Magnus Korpås for excellent discussions and suggestions on the thesis topic. I would likewise express my gratitude to Associate Professor Hossein Farahmand for providing superior help and literature for my inquiries throughout the semester. In addition, I would like to thank PhD candidate Marthe Fogstad Dynge for great academic input and advice on the practicalities connected to writing a master thesis. Her sharing of her own experiences has undoubtedly helped facilitate this thesis. My gratitude also goes to Gjermund Saetermo and Ane Meisingset Elgsem from Statnett, who contributed with valuable insight into the power system, as well as inspiration for the determination of the thesis objective. Additionally, I would like to thank Tore Schjelderup and Matthew Homola from Nordkraft for providing relevant data and good advice regarding the studied area. I would also like to thank my friends and family for their encouragement throughout the whole process. Among these I would like to mention and thank my parents for their unconditional support and patience, always showing interest and providing motivation during ups and downs. A special thanks also to Hilde Kiernan for thorough proofreading of a thesis far outside her scope of interest. And last but not least, I would like to express my gratitude to Jonas Sjong Forfot for invaluable support and collaboration, both professionally and personally, during our time as students.

show abstract

“…Dynamic line rating (DLR) allows for the maximum utilization of the conductor, that is, to operate at the maximum ampacity or current that it can withstand without exceeding the upper allowed temperature of the conductor [ 10 ]. Although there are different approaches to DLR, the most common approach is to measure weather variables, line current and temperature using dedicated sensors [ 11 ]. These measured variables are used to feed mathematical models of conductors, such as the Cigré TB207 [ 12 ] and IEEE [ 13 ] models, from which the maximum conductor rating is dynamically obtained.…”

Section: Introductionmentioning

confidence: 99%

On-Line Core Losses Determination in ACSR Conductors for DLR Applications

et al. 2022

View full text Add to dashboard Cite

Dynamic line rating (DLR) is a method that focuses on dynamically determining the maximum allowable current of power lines, while ensuring they operate within safe limits. DLR needs to monitor the temperature and current of the line in real-time, as well as the weather variables in the surroundings of the power line. DLR approaches also require determining the AC resistance of the power line conductors, which is a key parameter that enables it to determine Joule and core losses. This paper presents an approach for an on-line alternating current (AC) resistance estimation of aluminum conductor steel-reinforced (ACSR) conductors to determine the DLR capability of such conductors from real-time conductor and meteorological parameter measurements. For this purpose, conductors with one, two and three layers of aluminum strands are analyzed in detail. Based on the experimental results presented in this paper, two possible approaches are proposed.

show abstract

Dynamic Line Rating—An Effective Method to Increase the Safety of Power Lines

Cited by 15 publications

References 22 publications

Energy Harvesting Device for Smart Monitoring of MV Overhead Power Lines—Theoretical Concept and Experimental Construction

Energy Harvesting Device for Smart Monitoring of MV Overhead Power Lines—Theoretical Concept and Experimental Construction

Optimal Utilisation of Grid Capacity for Connection of New Renewable Power Plants in Norway

On-Line Core Losses Determination in ACSR Conductors for DLR Applications

Contact Info

Product

Resources

About