Will do then.
Funnily enough my brother was saying they are getting a lot more over-volts complaints now that embedded generation is increasing. Apparently management aren't keen on lowering the voltage a bit generally as that increases their losses*.Have you or your neighbours recently fitted any solar panels? As these have been a cause of excess volts all over the network
It's not that. As you go along the cable from supply to load, voltage reduces due to the resistance - Ohms law (V=IR), though there are slight complications in AC systems. Also there are losses in the transformers. Normally, all this is adjusted for at substations with "tap changers". There are multiple taps on the transformer so the output voltage can be adjusted, with changes being made by special make-before-break switches called tap changers (yes, this does momentarily short a few turns in the transformer during operation). I believe most of the tap changers are manual and will be set and left unless there's a problem.Lots of crappy inverters I guess. Mine don't cause any troubles.
Looks very much like the graphs I do from our UPS. Except that we have a number of steps superimposed on the daily up and down which I suspect are tap changes at the grid substation round the corner.
Normally, all this is adjusted for at substations with "tap changers". There are multiple taps on the transformer so the output voltage can be adjusted, with changes being made by special make-before-break switches called tap changers (yes, this does momentarily short a few turns in the transformer during operation). I believe most of the tap changers are manual and will be set and left unless there's a problem.
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