It is increasingly important to analyze electrical systems, in different situations for academic purposes or real situations at work. There are simulators from different sources, however, many of them do not offer a friendly interface for users with little experience in the area of electricity. This research is presented, where an interactive interface is developed using Digsilent PowerFactory and LabVIEW, for connectivity MatrikonOPC was used; The interface was developed in LabVIEW with two menus, one for diagram, calculation configuration and switch control and the second for control of loads and to visualize the variation of the power values of the reference generator. Finally, the transmission of the measurement data and the control of the switches is done through the bidirectional connectivity of Digsilent and the graphical interface in LabVIEW, obtaining a friendly interface for the analysis of load flow in electrical systems. This proposal made it easy for users with little experience to carry out the analysis of a model of the electrical network of the city of Arequipa.