That is a very similar approach to the one i use with "bullpen" fencing, using the insulated posts to elevate the charged wire above ground. See my post in Livestock/bees regarding electric fences.
One of the apiaries that was destroyed last year was at my CSA. i am recuiting that 30 + year beekeeper for the design team of the cooperative but he just doesn't get it with the bear thing. He has had bees on that property for at least 10 years maybe as much as 15 and this was his first bear encounter. That bear will be back this year to that apiary.
Bears are VERY smart critters. They remember where the good food treats can be found and return year after year until they become "nuisance" bears. Once a bear has caused problems for humans it is usually trapped, tagged and transported to someplace far away. Trouble is bears are very territorial and if you are a bear dropped into some other bears territory then you have only two choices, fight or leave. So 10 years ago when the neighborhood bear started causing problems she and her two cubs were trapped tagged and transported to the southern boundary of the state to be released into a State Wildlife Reserve. She was back but with only one cub the next spring. I'm certain she was destroyed though have no personal knowledge of the event. Bear license are sometimes issued to residents soley on the basis of problem bears in the area. I hear they taste good but are a little fatty.
George asked some of the most important questions ever posed.