Suggestion: The posted commercial packages by the major software developers, e.g.
1. SKM, Inc. software called Dapper, A-Fault, Captor, etc.
2. EDSA Power System Analysis Software by EDSA Microcorporation
3. Operation Technology, Inc. software called Etap
are comprehensive software tools for the electrical power system modeling, analysis, computations, etc. They are fairly complex and expensive to develop and are not for free beside limited demo periods with some restrictions.
There may be proprietary expertise programmed in the software, e.g. algorithms.
The manufacturers, e.g. Siemens, Cutler-Hammer, General Electric offer their software packages with libraries including their equipment only.