FIELD: electrical engineering.
SUBSTANCE: invention is related to the field of electric engineering, in particular to automation of electric networks, and is intended for disconnection of automatic transfer switch (ATS) at restoration of normal mode of network operation. According to the ATS disconnection method during the normal operation of the network restoration, the ATS switch is set in the initial position to the disconnected position, after voltage failure on reserved section of power transmission line (PTL) includes ATS switch, then direction of power flow through it is controlled, if the power flow is directed from the backup to the redundant portion, the ATS switch is left on, if the power flow changes the direction and power flows from the reserved section to the backup one, then it is concluded that the mains power supply is restored from the main source, in this case the ATS circuit breaker is disconnected, thus returning it to the initial position.
EFFECT: improved functional capabilities and application area of ATS disconnection method at normal network operation mode restoration, increased switching speed.
2 cl, 2 dwg
