Grid Islanding, Load Shading & Load Shedding

This isn't a search engine....

We know that you're not an expert, but why don't you try explaining what you think your answers should be, since it's impossible to guess what your exact system configuration is. That way some of the experts here might try and guide you, otherwise you should inform your employer/client that this project is above your pay grade.

ps- there are multiple "protection features" depending upon your goal; and use load "shedding" in your favorite search engine.

He’s like an annoying itch that won’t go away.

Do your own homework.

How to Search the Internet Effectively | MediaSmarts

How to Search the Internet Effectively

1. Water, food and shelter.
2. Stand under tree out of sun.

Harping....

We are becoming concerned about your tendency to expect others to do your work.

Explain: meaning of "Grid Islanding","load shading" and "Load Shedding": how you would know they had happened, estimate how quickly they do or must happen, or carry them out.

State what libraries or textbooks you have examined to understand this subject.

As pointed out already, more work by you in describing the problem and your thoughts about it will elicit more fruitful responses.