FIELD: electricity.
SUBSTANCE: invention relates to automation of power supply of traction network and can be used in multi-track section of AC traction network with sectioning station (SS), on which short-circuit control device is mounted. If the short circuit of the traction network was passing and was eliminated before the disconnection of the circuit breakers of the traction substations, then a command is given from the control device of the type of short circuit to block the disconnection circuit of the controlled disconnectors of the sectioning station and then by standard ACR all four switches of supply lines of traction substations contact system are switched on again. If the short circuit in the traction network was stable and was not eliminated until the traction substations switches off after a time Δt after short circuit occurrence, then by means of a maxi-selector connected through diode bridges with smoothing capacitors and matching transformers to current transformers of supply lines of contact network of each quarter of inter-substation zone, determining the highest current of one of the controlled disconnectors of the sectioning post of one quarter of the inter-substation zone during a dead time, disconnecting only one controlled disconnector of this quarter of the inter-substation zone. At disconnection of this disconnector by command of teleblocking, which combines protection of circuit breakers of traction substation and automatic equipment of disconnectors, interlocking is introduced for closing of emergency disconnected circuit breaker of traction substation.
EFFECT: simplification of the SS operation algorithm by reducing the number of operations.
1 cl, 1 dwg
