A developmental package of interactive software for illustrating power-system protection principles in educational and industry training programs

This paper describes the philosophy, development and use of a series of microcomputer-based software packages which assist in the analysis and demonstration of some fundamental concepts associated with power system protection and related areas. These easily-used, interactive programs employ extended screen color graphics capabilities to demonstrate fundamentals of steady-state synchronous-machine behavior, instrument transformers, time-overcurrent relay operation, directional relaying, percentage differential protection of a generator, and distance relaying. They include the display of instructions and tutorials, parameter values and numerical results, phasor diagrams, one-line diagrams, circuit diagrams, and device animation as appropriate. The software described is representative of what the authors envision to ultimately form a very comprehensive but expandable set of training modules for the power-system protection area. The modules are applicable to both academic power programs and industry training efforts