Sometimes it is useful to create test beds and simulations as part of your IED or system development.  Without specifically recommending any particular one, here are a few tools I've seen promoted for these purposes.

http://www.systemcorp.com.au/download/

https://www.trianglemicroworks.com/products/testing-and-configuration-tools/61850-test-suite-pro-pages/overview

https://www.trianglemicroworks.com/products/testing-and-configuration-tools/dtm-pages

http://www.61850easy.com/     This seems to have disappeared

https://github.com/stevenblair/rapid61850











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