PSU, dead due to low voltage?

Hey. I have been experiencing problems with the electrical system where I live. One of the main fuses blows, but there's still power, but it seems to be low-voltage or something. (Normal voltage is 220-230 in Norway). Normal lightbulbs gives just a little light, the plate in the microwave turns around on "half-speed" et cetera. But what this also does, is to kill one of my powersupplies. It has happened 2 times, and both times, it's the psu in the pc with an amd cpu that dies. the other one in a p2-300 works perfectly fine.

i've tried changing fuses inside the powersupplies. the first time, resulted in a loud noise, and both fuses on the circuit where my computeres are connected, blew at the same time.

the psu who survied the first incident was placed into the amd computer. next time, it didn't survive. but the new one that i installed into the old pentium-box did.

i have tried to change circuits inside the psu, with no positive results. the last one that died was a standard aopen atx psu at 360WATTS, plenty of power..but when i plugged into the powercable, i could hear the sound of some sparks.. you know, the sound that sometimes comes from the pins inside the box when they come closer to the cables connectors. so it's just like some parts of the psu is still alive.

and the first one was an expensive noise-control super-silented psu... costed 250-300$...

anyone know what i can do to fix these psus?

and to prevent this from happening (ofcourse, getting the houseowner to fix the electrical system would be a good start but..) will a ups do the job? i don't think a surge powerprotector will do the job, because it seems like it's insufficient current, not way to much.. but will an ups deal with variations in the voltage perfectly?