What can I use when there is a fire?

Aside from UPS, what can I use for power outages in a fraction of a second?
Now at home from 6am to 8pm, the power goes down to 190 VAC every day.
So there are both UPS and AVS that can help when the power gradually falls.
But the remaining problem is that when the voltage drop is 0.1 s (220 => 150(assuming value) => 220), the engine relay works 2 times in a row.
will cause the monitor to turn off for a while (plugged into the house's power supply, hit it directly, it will turn off as well)
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