High Resistance Ground

[aric.martens]

How does a HRG work, and what would be the major benefits and or disadvantages of using this method vs a solidly grounded system?

 

[ron]

HRG allows a ground fault to occur and doesn't trip breakers. It allows continuation of the process (as long as a second fault doesn't occur, which would be similar to a solidly grounded system).

Solidly grounded allow fault current to flow relatively unimpeded and trips breakers.

Hopefully you tried to Google the topic.
http://ecmweb.com/content/choosing-grounding-options-electrical-power-systems
http://ecmweb.com/content/basics-grounding-systems