This work presents the use of the modern software tool Alternative Transients Program (ATP) in the teaching of power engineering, within the course Computer Aided Engineering. A simulation model is presented through which it is possible to analyse the effects of distributed generators (DG) on the operation of a distribution network in both a steady and a transient state, with the objective of fulfilling the conditions for connection. This problem was selected not only because it allows students to gain proper insight into the phenomena within a distribution network with a connected distributed generator, but also because it has been shown that the problem of educating engineers is often a constraining factor for implementing distributed generation (DG). It is shown that by using the software tool ATP-EMTP, very complex phenomena in large networks can be studied without great difficulty or the need for analytical methods. The problem-based learning (PBL) method was applied.Distributed generation (DG) is an electric power source connected directly to the distribution network. The current level of development in society could not even be imagined without this relatively new concept, the benefits of which are well known. 1 Unfortunately, the development of distributed generation in Serbia, as well as in the other Southeast European countries, is not at a satisfactory level. The reasons are of a political, legislative, technical and economic nature, but a constraining factor for Serbia in particular is also the problem of educating the engineers who are to realize this concept. Due to inadequate education, they resist the implementation of DG. 2 Because of this, during the past several years, additional courses on DG have been added to the curriculum in the faculties of electrical engineering, but they cover the principles of operation, energy potentials, exploitation, designing and economy of DG, and not the negative effect of DG on a distribution network. Namely, it is well known that DG can cause significant technical problems in the operation of an existing distribution network. The main problems are the effects on the voltage profile, load flow, short-circuit currents, loading capability, operation and settings of relay protection equipment, voltage regulation, unintentional islanding, loss of synchronism, and automatic reconnection. Because of this, standards in the USA, 3 technical guidelines in Serbia, 4 and the wider
