Jun 17 14:58 2018, Henri Derksen wrote to Markus Reschke:
HD> I tought the ac~ Voltage was/is also an indicator for that.
The voltage is also monitored to keep it within specs, but it's done more locally because of Ohm's law.
HD> When you want to feed in power to the grid from your dc=/ac~ inverter HD> of your sunpanels, its Voltage has to be higher to let the Amperes HD> flow ;-). If many do that the ac~ Voltage is going on higher at sunny HD> days, then in the evenings.
Ohm's law at work :) The PV inverters can cause quite some trouble in the local power distribution, i.e. voltages at the top end, noise and THD.
HD> At night the power demands are lower, so the ac~ Voltage is going up HD> again until the next morning if everyone is making thee and coffe HD> etc. Many years in Belgium they led the light on at highways the whole HD> night because the nuclear power plant was hardly to reduce its HD> power. To the common public this behavior was strange to the HD> enviroment.
That's called the base load. A nuclear power plant can't be switched off or on in a few seconds (normal operation mode).
HD> You know that even the pause in footbal games can be seen on many HD> nets? More water for the toilets and more electrical energy for coffee HD> etc.
With the resolution of a smart meter you can detect specific household appliances running.
