PL177939B1 - On/off making control system of a rapid dc traction current switch - Google Patents

Abstract

1. The control system is designed for switching on and off the current-limiting circuit breaker for the direct-current overhead line. The system consists of the power-supply automation block, the separating block, the actuator block and the transceiver block. Unique characteristics: The separating block (2P) of the current-liming circuit breaker (WS) with a test mechanism is connected to the static relay (RO) and to the pulse repeater (RU). The static relay (RO) is connected to the operating switch-off block (WO), while the pulse repeater (RU) is connected to the conditional switch-off block (WU). The separating block (2P) is connected to the double-processor comparator (K).

Description

The subject of the invention is a control system for switching on and off the DC fast traction circuit breaker. It is used in particular for the protection and disconnection of the traction network power supply, for rail and road vehicles, against damage, e.g. short circuits.

There is known a system for the dependent disconnection of circuit breakers and control of power automation units of a traction substation and / or controlled sectional cabins and at least one control traction substation, from the patent description PL No. 145 542, in which, in a controlled traction substation and in each control traction substation, an energy automation block is connected through a separating block and an executive block with a transmitting-receiving block. In each of the two control traction substations, the separating block is also connected to the information block, and the actuator is connected to the control block also connected to the informing block. The transmitting-receiving blocks of both control traction substations are connected with the transmitting-receiving block of the controlled traction substation.

The disadvantage of the known system is that it is not possible to carry out a controlled test of the line, which in consequence could cause the breaker to be destroyed by repeated automatic closing.

The object of the invention is to develop such a system which overcomes the drawbacks resulting from the state of the existing known systems.

This goal was achieved by developing a control system for switching on and off the DC fast traction circuit breaker.

The system according to the invention, including an energy automation block, a separating block and an output block, as well as a transmitting-receiving block, is characterized in that the block separating the switch with the sample is connected to a static relay and to a pulse relay. The static relay is connected to the trip block. On the other hand, the impulse relay is connected to the dependent tripping block. The separator block is connected to a dual-processor comparator which connects to the transmit / receive block.

The advantage of the system according to the invention is the possibility of carrying out the line test in a controlled manner thanks to the use of an impulse relay, which reduces the probability of switching on the circuit breaker caused by simultaneous two-sided line tests.

The system according to the invention also enables full control over the circuit-breaker switching status during the control of the traction network on the other side of the power supply.

Another advantage of the system is the use of a static relay which ensures dependent tripping of the supervised circuit breaker.

177 939

The system according to the invention ensures the durability of the circuit breaker and the optimal working conditions recommended by the manufacturer, thanks to the constant readiness of operation by controlled heating of the holding coil.

The subject of the invention is illustrated in an embodiment in the drawing showing a block diagram of the system.

The inventive control system for switching on and off of the fast DC traction circuit breaker consists of a 2P separation block connected to the static RO relay and the RU impulse relay. The static RO relay is connected to the operational trip block WO. The pulse relay RU is connected to the conditional trip WU. The separation block 2P is connected to a two-processor comparator K. The comparator is coupled to a transmit / receive block 4P which is coupled to a transmission LT line. The separation block 2P is connected in the exemplary embodiment to the energy automation block 1P.

Operation of the system according to the invention is as follows.

The information received from the transceiver block 4P is fed to a two-processor comparator K, which transmits the signal to the separator block 2P. On the basis of the received signal, the separation block 2P starts the relay RO and RU simultaneously. In the special case of the so-called dependent dependent tripping of the WS quick breaker, only the pulse relay RU is tripped. When the RO and RU relays are activated simultaneously, the WS quick switch is turned off, which deprives the traction network of power supply. The WS switch, due to the tripping of the static RO relay, is unable to perform the line test. When only the RU impulse relay is started, the supply circuit of the holding coil is broken and the WS quick switch is turned off, which will make the active circuit test circuits enable the quick WS switch to close by activating the closing coil after a positive test result, i.e. there is no contact on the overhead contact line a short circuit or other similar fault, at the same time ensures that the current flows through the holding coil to keep the circuit breaker closed.

177 939

Publishing Department of the UP RP. Circulation of 70 copies. Price PLN 2.00.

Claims (2)

Patent claims 1. The control system for switching on and off the high-speed DC traction circuit breaker, including the power automation block, the separating block, the actuating block and the transceiver block, characterized in that the separating block (2P) of the quick circuit breaker (WS) with the test is connected to the relay (RO ) static and with pulse relay (RU), the static relay (RO) is connected to the trip block (WO) and the pulse relay (RU) is connected to the dependent trip block (WU), and the separating block (2P) is connected with two-processor comparator (K). 2. The system according to claim The method of claim 1, characterized in that a comparator (K) is connected to the transmit / receive block (4P).