METHOD TO CONTROL POWER SUPPLY SYSTEM Russian patent published in 2011 - IPC H02J3/00 

FIELD: electricity.

SUBSTANCE: having power grid and power-saving micro-power plant, it is proposed to start micro-power plant as load current increases up to specified value, and to switch load power supply from power grid to power supply from micro-power plant, while after reduction of load current, from mentioned specified current value, by a certain value, to disconnect micro-power plant and to switch load to power supply from power grid.

EFFECT: reduced power consumption from power grid and less expenses for object power supply.

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