Evaluation of Simulation Methods for Analysis of Geomagnetic Disturbance System Impacts

Author(s):  
Aboutaleb Haddadi ◽  
Reza Hassani ◽  
Jean Mahseredjian ◽  
Luc Gerin-Lajoie ◽  
Afshin Rezaei-Zare
Author(s):  
Aboutaleb Haddadi ◽  
Reza Hassani ◽  
Jean Mahseredjian ◽  
Gerin-Lajoie Luc ◽  
Afshin Rezaei-Zare

2020 ◽  
Vol 10 (10) ◽  
pp. 20-32
Author(s):  
Aleksey A. KUVSHINOV ◽  
◽  
Vera V. VAKHNINA ◽  
Aleksey N. CHERNENKO ◽  
◽  
...  

The mathematical model of a shell-core power transformer’s magnetization branch is substantiated. By using the model, analytical expressions for the magnetizing current instantaneous values under the conditions of geomagnetic disturbances can be obtained. Quantitative assessments of the magnetizing inrush current amplitudes and durations versus the geomagnetic disturbance intensity are obtained. The dynamics of the power transformer magnetic system saturation transient and changes in the magnetization inrush current amplitudes and durations after a sudden occurrence of geomagnetic disturbances are shown. The error of estimating the magnetizing inrush current amplitudes under geomagnetic disturbances is determined based on comparison with experimental data.


Author(s):  
Yoshimichi YAMAMOTO ◽  
Maiki HAYAKAWA ◽  
S Masihullah AHMADI

Author(s):  
Vasily Bulatov ◽  
Wei Cai

This book presents a broad collection of models and computational methods - from atomistic to continuum - applied to crystal dislocations. Its purpose is to help students and researchers in computational materials sciences to acquire practical knowledge of relevant simulation methods. Because their behavior spans multiple length and time scales, crystal dislocations present a common ground for an in-depth discussion of a variety of computational approaches, including their relative strengths, weaknesses and inter-connections. The details of the covered methods are presented in the form of "numerical recipes" and illustrated by case studies. A suite of simulation codes and data files is made available on the book's website to help the reader "to learn-by-doing" through solving the exercise problems offered in the book.


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