In electrical engineering the return stroke is the most important event in lightning flash, because return stroke current causes most of the damage and disturbance in electrical network. Return stroke mathematical models help engineers to predict transient voltages and currents induced in electrical networks by return stroke electromagnetic fields. Return stroke models can be divided into three groups: the electro-thermodynamic models, the transmission line models and engineering models. This paper compares the most commonly used engineering return stroke models, including Heidler model which is used in International Electrotechnical Commission (IEC) standard and return stroke current model recommended by the International Council on Large Electric Systems (CIGRE). Over-voltages induced by direct or indirect lightning strike in the electrical network are the main cause of damage in households, according to statistics of European insurer companies. In this paper Alternative Transient Program/Electromagnetic Transient Program (ATP/EMTP) is used to create model of the electric power distribution network and to perform simulations of the transient process during lightning discharge in network. Various lightning return stroke current peak values and waveforms in electrical network with or without surge arresters were simulated. Aim of the research is to compare lightning current models offered in ATP/EMTP by entering identical input parameters for different scenarios.