You..clearly know nothing about power grids, because utilities are deploying batteries precisely because they increase reliability an ease maintenance. And microgrids exist all over the US - a bunch are in Alaska and other very rural areas. Those communities have started adding battery storage systems to account for sudden load changes their generators can't handle, generator failure or maintenance, and so on.
Without them the grid is like a bunch of dominoes where a failure can cascade unless grid operators, or automated systems, react fast enough. Battery systems are like power firewalls; if the main grid goes down, the battery keeps right on chugging.
If circuit protection devices or an equipment failure happens on a main transmission line, the utility has hours to fix it, and meanwhile everyone has power. Ditto for maintenance. Need to replace that big huge switch that feeds part of the county? No problem, just...shut it off. Long as you're done before the battery bank runs out, everything's fine.
Right now you can end up with situations where a power plant will "trip" and go offline, such as when a large amount of load is disconnected due to a transmission line failure or substation failure. The grid frequency goes up if the power plants on the grid can't throttle back fast enough, and instead, to keep the grid from going over-frequency, the plant goes offline entirely.
If a lot of areas are on battery - those systems can be commanded to start charging to stop the plants from speeding up. If the grid goes dead, it's not nearly as big a deal, because the grid operators have more time to do things like sequence the re-connection of all those areas.
I'd imagine that with a bunch of battery systems distributed around a grid, they could potentially be able help black-start a plant if needed.
Battery systems also reduce the need for a transmission line upgrade; when demand is higher than the line's capacity, the battery system steps in. When demand is below the line capacity, the battery system charges.
i'd be careful telling someone that they don't know about power grids.
All the microgrids you describe provide basic needs. None power serious industry anywhere.
Batteries are a good solution for certain situations, not as a fix-all. All the batteries in the world can power a large power system like California or Quebec for minutes. That's right - minutes.
Without them the grid is like a bunch of dominoes where a failure can cascade unless grid operators, or automated systems, react fast enough. Battery systems are like power firewalls; if the main grid goes down, the battery keeps right on chugging.
If circuit protection devices or an equipment failure happens on a main transmission line, the utility has hours to fix it, and meanwhile everyone has power. Ditto for maintenance. Need to replace that big huge switch that feeds part of the county? No problem, just...shut it off. Long as you're done before the battery bank runs out, everything's fine.
Right now you can end up with situations where a power plant will "trip" and go offline, such as when a large amount of load is disconnected due to a transmission line failure or substation failure. The grid frequency goes up if the power plants on the grid can't throttle back fast enough, and instead, to keep the grid from going over-frequency, the plant goes offline entirely.
If a lot of areas are on battery - those systems can be commanded to start charging to stop the plants from speeding up. If the grid goes dead, it's not nearly as big a deal, because the grid operators have more time to do things like sequence the re-connection of all those areas.
I'd imagine that with a bunch of battery systems distributed around a grid, they could potentially be able help black-start a plant if needed.
Battery systems also reduce the need for a transmission line upgrade; when demand is higher than the line's capacity, the battery system steps in. When demand is below the line capacity, the battery system charges.