Digital solution of network short-circuit currents

PHASE and line-to-ground faults for large networks can be economically determined on a medium-size digital computer using the methods discussed. A program has been written and tested on a 2,000-word IBM (International Business Machines Corp.) 650 computer. Similar programs could be written for other computers which have equal or greater storage capacity. The method presented uses the short-circuit tensor and symmetrical components with the same assumptions and basic data as is used for network analyzer studies. Negative impedances and mutual impedances are properly represented.