Lightning Activity Monitoring System (LAMS) provides very important data for transient analysis. This paper describes a new lightning activity monitoring system installed on the mountain Lovcen. First measurement data are shown and their importance in transient analysis due to direct lightning strokes on wind turbine blade is explained. This paper describes complete model for wind turbines testing under different lightning current shapes developed in EMTP - RV.

This paper describes a new real time remote lightning monitoring system in the region. Importance of such systems and data that they provide is explained. First measurements data are shown. Future steps in development of system are mentioned.

This paper describes modelling procedure for calculating energy stresses of transmission line surge arresters. A 110 kV shielded transmission line is modelled using ElectroMagnetic Transient Program – Restructured Version (EMTP – RV). Some parts of transmission line such as transmission line towers and stations on both ends of line are modelled thanks to EMTP – RV possibility of grouping electrical elements into subcircuits. Also it was possible to create subcircuit consists of number of other subcircuit. This possibility was very important for dividing transmission line into number of sections that consists of number of towers. Arrester current and voltage, energy duty, insulator voltage and voltage on tower top due to bipolar lightning are calculated and presented.