Power outage in MünsterlandIntense snowfall broke the high voltage pylons ans with this the power supply. for several days. What would have brought a photovoltaic in this situation.
A grid connected photovoltaic equipment delivers only power when the grid is on. When a service technican switches off, he depends on, that the grid is really switched off. It has to be impossible, that a photovoltaic delivers power to the wire just under repair. So a photovoltaic equipment has to be special designed to be also an emergency power supply. An example for this was on the Intersolar fair zu sehen
After the photovoltaic and a equipment for emergency power supply, the next question is the size. To cook electric after a power failure because of a snow strom would be a big luxury. With the question what functions should be supported during a power failure comes the question to switch off big power users, to preserve only basic comfort for a longer power failure. An other reason for a house control system. Power failure on a sunny day, the photovoltaic delivers 8 kW, no problem for electric cooking. Same situation on a cloudy December day, the electric cooker is switched off by the house controll system. |