Zobrazeno 1 - 10
of 474
pro vyhledávání: '"Farhad Rachidi"'
Autor:
Farzin Khodaveisi, Hamidreza Karami, Matin Zarei Karimpour, Marcos Rubinstein, Farhad Rachidi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract This paper presents a comparison of machine learning (ML) methods used for three-dimensional localization of partial discharges (PD) in a power transformer tank. The study examines ML and deep learning (DL) methods, ranging from support vect
Externí odkaz:
https://doaj.org/article/80512271dbb145ef9967012526e9b1fa
Autor:
Toma Oregel-Chaumont, Antonio Šunjerga, Pasan Hettiarachchi, Vernon Cooray, Marcos Rubinstein, Farhad Rachidi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract X-rays have been observed in natural downward cloud-to-ground lightning for over 20 years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader phase
Externí odkaz:
https://doaj.org/article/715cd5a1610b46d98f4b8a185ff6c604
Autor:
Elias Le Boudec, Chaouki Kasmi, Nicolas Mora, Farhad Rachidi, Emanuela Radici, Marcos Rubinstein, Felix Vega
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract Time-domain solutions of Maxwell’s equations in homogeneous and isotropic media are paramount to studying transient or broadband phenomena. However, analytical solutions are generally unavailable for practical applications, while numerical
Externí odkaz:
https://doaj.org/article/f0a09f6749304c9a8c5f1d94c6d2e2ac
Publikováno v:
Atmosphere, Vol 14, Iss 12, p 1713 (2023)
Lightning is directly or indirectly responsible for significant human casualties and property damage worldwide. A timely prediction of its occurrence can enable authorities and the public to take necessary precautionary actions resulting in diminishi
Externí odkaz:
https://doaj.org/article/9ec158fae2104007a6a0b54be1277638
Autor:
Constanza Inés Villagrán Asiares, María Gabriela Nicora, Amalia Meza, María Paula Natali, Eldo Edgardo Ávila, Marcos Rubinstein, Farhad Rachidi
Publikováno v:
Atmosphere, Vol 14, Iss 9, p 1386 (2023)
The ionosphere can be perturbed by solar and geomagnetic activity, earthquakes, thunderstorms, etc. In particular, electromagnetic pulses produced by thunderstorms can generate wave structures in the ionospheric plasma, which are known as atmospheric
Externí odkaz:
https://doaj.org/article/d4e0b8b2187b4354bc9a9b920c573f40
Publikováno v:
Frontiers in Energy Research, Vol 10 (2022)
Electromagnetic time reversal (EMTR)-based methods have been applied to the problem of fault location in power networks since 2012. Over the past decade, considerable theoretical investigations have led to a continuous improvement of the EMTR method
Externí odkaz:
https://doaj.org/article/e132cbfc64d54e168d6ad97b64723b53
Publikováno v:
Energies, Vol 16, Iss 13, p 5104 (2023)
In recent years, the electromagnetic time reversal (EMTR) theory has been successfully applied for locating various sources of disturbances, such as short-circuit faults, in power systems. In this paper, a theoretical analysis of the feasibility of a
Externí odkaz:
https://doaj.org/article/6d8badfe371d468795d4ab9f9104d773
Publikováno v:
Atmosphere, Vol 14, Iss 2, p 350 (2023)
An exact analytical expression for the electric field of the return stroke as excited by a propagating step current source is derived in this paper. This expression could be advantageously used to evaluate the disturbances caused by lightning on over
Externí odkaz:
https://doaj.org/article/059c790b6d3c4f63976e542f929c62fd
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract The localization of partial discharge (PD) sources is of importance for the monitoring and maintenance of power transformers. Time difference of arrival (TDoA) based methods are widely adopted in the literature for the localization of PDs. R
Externí odkaz:
https://doaj.org/article/f3948102c88b4fada0cfdb9c37b8822a
Autor:
Mohammad Azadifar, Hamidreza Karami, Zhaoyang Wang, Marcos Rubinstein, Farhad Rachidi, Hossein Karami, Ali Ghasemi, Gevork B. Gharehpetian
Publikováno v:
IEEE Access, Vol 8, Pp 147507-147515 (2020)
In this study, first, a comparison on the application of electromagnetic time reversal (EMTR) and time difference of arrival (TDoA) in partial discharge localization in power transformers is presented. A two-dimensional finite-difference time-domain
Externí odkaz:
https://doaj.org/article/c197dab1de9d42bcb9f4ef6dcf9559a6