A fast discrete method for voltage drop and current calculation for manufacturing facilities with intermittent loads

A numerical method of calculating voltage drops and thermal current ratings due to a large number of intermittent loads such as welders and robots is presented. The welder and robot loads may have different currents and duty cycles and connect at different points on a distribution network, not necessarily radial. No lumping of welder loads is required. Regular loads such as motor loads and other process loads can also be represented simultaneously. The method can be easily extended to single-phase welders, i.e. for a three-phase distribution system analysis