FIELD: electricity.
SUBSTANCE: invention refers to method and device of switch torque determination in electric switching device with disconnection gap (1) positioned between first line sector (2) loaded with feed voltage and second line sector (3) forming oscillation circuit after switching device connection. First (2) and second (3) line sectors are connected and disconnected by disconnection gap (1). To determine switch torque, time parametre of feed voltage (A) is determined at first line sector (2). Then time parametre of oscillation voltage (B, B1) occurring in second line sector (3) is determined. Potential switching torques are determined in zero passage points of resulting voltage (C, C1). Potential switching torques are selected by assessment of feed voltage (A, A1) and oscillation voltage (B, B1) increase or respective oscillation current polarity (D).
EFFECT: restriction of transition surges or respective oscillations in electric power transmission network.
12 cl, 9 dwg
