FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering. The device contains an adjustable grounding resistor (1) connected to the neutral of the low voltage network of the network substation. The current winding of the arcing reactor (4) connected to the neutral of the neutralizing device (2) in parallel with the grounding resistor (1) is connected to the first input of the functional element (5) for calculating the value of the protective resistor. The outputs of the low voltage windings of the voltage transformer (6) are connected to the input of the functional element (8) for selecting the damaged phase, the output of which is connected to the input of the functional element (9) for determining the initial voltage recovery rate on the damaged phase. The output of the functional element (9) for determining the initial voltage recovery rate on the damaged phase is connected to the second input of the element for calculating the value of the protective resistor value (5), the output of which is connected to the second input of the switch package (3), and a grounding resistor (1) is connected to the output of the switch package (3).
EFFECT: improving the efficiency of the device.
1 cl, 1 dwg
