Device for self-consumption control in energy production by means of photovoltaic systems

摘要

Device for self-consumption control in the production of energy by means of photovoltaic systems with at least one inverter, a feed meter, a programmable logic controller (PLC) and a multi-phase electric heating device, in particular a heating cartridge of a hot water tank, characterized in that the output side of the at least one inverter has a sensor for detecting the moment Available electrical power is arranged, the sensor being connected to the input of the programmable logic controller, a contactor switching unit is connected to the output of the feed meter, which establishes a controllable electrical connection to the electrical heating device, the contactors of the switching unit via a control line from the Programmable logic controller can be operated in such a way that the electric heating according to the current range of services of the photovoltaic system device is switched on or off and for this purpose the electric heating device has a plurality of heating elements which are graded in their power, can be activated individually or in groups by means of the contactor switching unit.