FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering, in particular to the interruption of unauthorized voltage supply to the low-voltage buses of the transformer substation. Technical result is achieved due to determination, using logic devices, low-voltage power transmission lines passing from transformer substation, in which unauthorized supply of voltage, and unauthorized supply of voltage to low-voltage busbars of transformer substation by means of disconnection of switching devices, low-voltage power lines coming from transformer substation and input switching device at input of low voltage of transformer substation to exclude the possibility of reverse transformation and unauthorized supply of voltage to the high voltage network, as well as signaling and informing personnel of electric network organization on unauthorized supply of voltage to outgoing from transformer substation line of low-voltage power transmission or to low-voltage buses of transformer substation, preventing possibility of people falling under voltage.
EFFECT: technical result consists in improvement of electric networks safety.
1 cl, 1 dwg
