During a period of overload, which I interpret to mean the demand exceeding both traditional supply and micro grid supply, there has to be some kind of disconne

During a period of overload, which I interpret to mean the demand exceeding both traditional supply and micro grid supply, there has to be some kind of disconnection to protect the grid. When that disconnection happens, micro grids can at least still power limited number of appliances. Making the grid larger and more extensively shared power decreases the probability of overload but increases the inconvenience when such overload does happen.