| 摘要 |
The invention relates to a device for covering the peak load of an electrical consumer (VB) connected to an alternating-current power supply of a public electricity network (ENT). Said device comprises: a current inverter (WR) which is fed by a direct- current supply (BAT) and is connected in parallel, at the output thereof, to the electricity supply of the consumer (VB); a measuring device (Z1, Z2) connected in the connection circuit (EN) of the consumer; and a control device (STE). The control device monitors the energy consumption of the consumer (VB) by means of the measuring device (Z1, Z2), estimates the quantity of electrical energy (E*(T)) consumed up to the end (T) of a defined time interval, for example, by means of linear extrapolation, and, in the event of the thus obtained prognosis value rising above a pre- determined threshold value (Emax), includes the inverter (WR) in the operation, in order to support the supply of the consumer.
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