Electric arc is a complex phenomenon occurring during the current interruption process in the power system. Therefore performing digital simulations is often necessary to analyse transient conditions in power system during switching operations. This paper deals with the electric arc modelling and its implementation in simulation software for transient analyses during switching conditions in power system. Cassie, Cassie-Mayr as well as Schwarz-Avdonin equations describing the behaviour of the electric arc during the current interruption process have been implemented in EMTP-ATP simulation software and presented in this paper. The models developed have been used for transient simulations to analyse impact of the particular model and its parameters on Transient Recovery Voltage in different switching scenarios: during shunt reactor switching-off as well as during capacitor bank current switching-off. The selected simulation cases represent typical practical scenarios for inductive and capacitive currents breaking, respectively.

In this article I try to think about the terms “stories” and “ontologies” in Ewa Domańska’s works: Mikrohistorie. Spotkania w międzyświatach (1999; 2005), Historie niekonwencjonalne (2006), Historia egzystencjonalna (2012), Historia ratownicza (2014) and I try to compare my conclusions with her latest publication. I am interested in the turning point in her thoughts, giving up the theory and methodology of history and switching to the ontology of the dead body. In order to do this I look through these publications and indicate which threads could help work out the excellent, innovative, and fresh conception of Nekros. The main part of the article is a detailed discussion of this. In the other part, I consider how to interpret more traditionally a past description like “cultural memory” and whether Domańska’s works accidentally invalidate them. I suggest a short statement of Marcin Napiórkowski’s and Stephen Marks’ works to show closer (Marks) and further (Napiórkowski) parallels or completely different presentations of similar problems.