Web Application for Load Flow Problems

This article describes a computer program for solving load flow problems in power systems, which was developed as web application. The computer program was coded in PHP language, it runs in a web server, and its interface with user is by web browsers (html format). Algorithm for solving the load flow problem can be selected by the user. Algorithms include the solution for problems with limits of reactive power in PV nodes, and the solution for automatic tap changers in power transformers. The results were verified with examples available in literature and with the demo version of a commercial software. Development of this load flow software as an internet/intranet application allows exploring new ways for use it for teaching and/or professional purposes.