Scale models? I'm not following your meaning. It's actually a power substation blowing.
I think you've been hoaxed. About half way through it, there is a shot of fuel, hence the black smoke from the ensuing fireball. Right near the end, you can clearly see a shadow of a person reaching over the model, presumably to extinguish the fuel introduced halfway through the cilp. Also, why is there laughter from an audience right before the bogus "calling all available units" type radio call.
There is no way this is a real substation blowing, unless it weere situated on top of a 5000 gallon fuel storage tank and 800' tall men are walking around.