From the discussions on busbar protection in this issue of the magazine we can see that the efforts of many people in our industry have already resulted in some new ideas, methods and tools that allow us to improve the protection of busbars.

However, this should not be the end of the road. We should not sit back and relax with a happy smile, thinking.
"Yes, we did it! This is it."

We started with questions and we should end with questions, because every end is actually just a new beginning.
Since we are talking about busbar protection, we can start thinking about how to continue our search for better solutions. We can look at different directions. The first one may be finding new ways of implementing old protection principles - for example, busbar differential protection. Can we go up the spiral of innovation and implement it differently with the new technology? Think about one of these:

• Can we implement (or maybe you already did) busbar differential protection based on differential current samples calculation?
• Can we do the differential protection using synchrophasors coming from PMUs defining the zone of protection?
• Can we use analog GOOSE messages for a busbar differential protection application?
• Can we use wide area backup busbar protection?

Or maybe you have other ideas triggered by the articles in this issue of the magazine.

Try them and if you succeed, let our community know what you did and how you did it.