| 1. |
- Hajeforosh, Seyede Fatemeh, 1988-, et al.
(author)
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Increasing the Grid Capacity for Electric Vehicle Charging using Dynamic Rating
- 2021
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In: CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution. - : Institution of Engineering and Technology. ; , s. 1777-1781
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Conference paper (peer-reviewed)abstract
- With a noticeable increase in the number of electric vehicles\,(EVs) in coming years, lack of grid capacity may become a barrier for electrification of transportation. This study presents the application of dynamic rating to increase the available transfer capacity and to enable more increase in consumption. Through stochastic calculation the hourly available capacity has been estimated which then used to calculate the hosting capacity. In this sense, the probability of overloading considering different EV types is calculated. The results show that the probabilistic hosting capacity would be a better indication to estimate the minimum and maximum EV load demand in the coming hours.
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| 2. |
- Hajeforosh, Seyede Fatemeh, 1988-, et al.
(author)
-
Reliability Aspects of Dynamic Thermal Rating in the Power Grid
- 2021
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In: CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution. - : Institution of Engineering and Technology. ; , s. 1086-1090
-
Conference paper (peer-reviewed)abstract
- This paper is an overview of the components and failure modes that should be considered when studying the reliability of dynamic thermal rating (DTR) in the power system. A reliability study should include failure of a measurement device, failure of the communication, model inaccuracy, and failure of the control system. The presence of the DTR system increases the risks of unnecessary operation and lack of action in power system due to an error in DTR calculation. This impact is studied qualitatively in this paper; it is of great importance during operation and maintenance of the power system.
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| 3. |
- Hajeforosh, Seyede Fatemeh, 1988-, et al.
(author)
-
Uncertainties in radiation modelling for overhead lines and their impact on the ampacity
- 2021
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In: CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution. - : Institution of Engineering and Technology. ; , s. 2366-2370
-
Conference paper (peer-reviewed)abstract
- This paper gives a detailed analysis of the radiation terms in the heating balance for overhead conductors. The terms in the radiation balance determine the rating of an overhead line for use in dynamic line rating schemes. These radiation terms are often not considered and in which there is a relatively big uncertainty. The available knowledge and the different uncertainties are summarized, for radiation from the environment reaching the conductor, for thermal emission from the conductor and for heating of the conductor due to direct and indicated solar irradiation. The impact of the uncertainties on the uncertainty in line rating is quantified and it is concluded that the error made is around 10 % for low wind speed.
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