Study of different mathematical approaches in determining the dynamic rating of overhead power lines and a comparison with real time monitoring data

Castro, P.; Arroyo, Alberto; Martínez, Raquel; Canteli, Mario Mañana; Domingo, R.; Laso, Alberto; Lecuna, Ramón

doi:10.1016/j.applthermaleng.2016.09.081

Cited by 17 publications

(5 citation statements)

References 8 publications

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“…showing an overestimation of the algorithm of 2.5 o C. This result is in accordance with previous studies comparing temperature measurements in the field with temperature estimations by using standards [30].…”

Section: Conductor Temperature Estimation By Using Standards and Meas...supporting

confidence: 93%

Non-contact temperature measurement method for dynamic rating of overhead power lines.

Lecuna

Castro

Canteli

et al. 2020

Electric Power Systems Research

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Section: Conductor Temperature Estimation By Using Standards and Meas...supporting

confidence: 93%

Non-contact temperature measurement method for dynamic rating of overhead power lines.

Lecuna

Castro

Canteli

et al. 2020

Electric Power Systems Research

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“…However, the most critical parameter in the decrease of the difference between the maximum and minimum temperature measured in an area of influence is the wind speed. As it increases, the distributed temperature tends to be more homogeneous as can be seen in Figure 3 and it is predicted in the literature [7,8].…”

Section: Distribution Temperature Measurements Tmax Tmin Tavsupporting

confidence: 82%

Distributed vs. spot temperature measurements in dynamic rating of overhead power lines

Martínez

Useros

Castro

et al. 2019

Electric Power Systems Research

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The increase of global energy demand and new ways of electricity production are two of the main challenges for the power sector. The electric market has to address the addition of new and renewable sources of energy to the energy mix and to be able to integrate them into the grid, while maintaining the principles of robustness, security and reliability [1]. All of these changes point to the creation of smart grids, in which advanced generation, information and communication technologies are needed.An accurate knowledge of the electric grid state is crucial for operating the line as efficiently as possible and one of the most important grid parameters to be measured and controlled is the temperature of the overhead conductors due to their relation with the maximum allowable sag of the line and its thermal limit (annealing).This paper presents the results of real-time monitoring of an overhead power line using a distributed temperature sensing system (DTS) and compares these results with spot temperature measurements in order to estimate the loss of accuracy of having less thermal information. This comparison has been carried out in a 30 km long distributed temperature sensing system with fiber optic inside a LA-455 conductor and 6 weather stations placed along the line. An area of influence is defined for each weather station corresponding to the orography of the surroundings. The spot temperatures are obtained from the DTS in the nearest point from the weather stations assuming these six locations to be the ones where the spot temperature measurement equipment would be located.The main conclusion is that, in the case of study, spot measurements are enough to obtain a good approximation of the average temperature of the line conductor.

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“…Both CIGRE and IEEE Standards describe the physics involved in the thermal balance of the conductor in steady and unsteady conditions, reaching similar results [ 18 ]. In this case study, a Matlab ® code was implemented based on the Equation ( 1 ) of CIGRE Standard to obtain the theoretical conductor temperature based on the weather and line operating conditions [ 19 ].…”

Section: Methodsmentioning

confidence: 96%

Infrared Temperature Measurement Sensors of Overhead Power Conductors

Castro

Lecuna

Canteli

et al. 2020

Sensors

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Efficiency in power lines operation is becoming more crucial as the electrification increases and more renewable energies are connected into the grid. New methods and sensors are being added to create smart grids to face these challenges and conductor temperature sensors are one of them. Contact temperature sensors have several problems regarding safety and electronic damage due to the electromagnetic fields induced on the conductors. The goal of this paper is to describe an infrared temperature measurement sensor and to compare contact and non-contact temperature measurements to estimate the temperature of power lines. Measurements were done for almost a year, storing around 150,000 measures of contact and infrared thermometers for many different weather and load conditions. The results conclude that the infrared system can be successfully used to control the temperature of the overhead conductor within a range of less than 4 ∘C difference with respect to contact temperature methods for the 88% of the samples and less than 6 ∘C for the 99%.

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Study of different mathematical approaches in determining the dynamic rating of overhead power lines and a comparison with real time monitoring data

Cited by 17 publications

References 8 publications

Non-contact temperature measurement method for dynamic rating of overhead power lines.

Non-contact temperature measurement method for dynamic rating of overhead power lines.

Distributed vs. spot temperature measurements in dynamic rating of overhead power lines

Infrared Temperature Measurement Sensors of Overhead Power Conductors

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