JPH0299432A - Feeder selector device - Google Patents

Abstract

PURPOSE:To enable the use of an electric power regenerative brake even in a mid-section by connecting the mid-section and one of trolley lines to the other trolley line when an electric car upon entry from the latter trolley line to the mid-section is detected as in a regenerative operation mode. CONSTITUTION:When an electric car 8 is running in an arrow A left direction along a rail 14, using a power regenerative brake, a regenerative power is returned to a substation 1a via a trolley line 2a and a feeder circuit breaker 3a. In this mode, when the electric car 8 enters a mid-section 5, a regenerative power from the electric car 8 is returned to the substation 1a via a selector circuit breaker 6a and the trolley line 2a. Correspondingly thereto, regenerative current is detected with an instrument converter 10 and regenerative voltage detected with an instrument transformer 11 respectively. Then, an electric power direction detection device 12 issues an extension feeder command and transmits the command to a transfer device 13, thereby opening a feeder circuit breaker 3b and turning a selector breaker 6b. As a result, the mid-section 5 and the trolley line 2b are made as the extension feeder of the trolley line 2a.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a feeder line switching device.

(Prior Art) In a feeder line system, a feeder line switching device is used to prevent power from each substation from coming into contact with each other.

FIG. 4 is a system diagram showing an example of such a feeder line switching device.

The feeder line switching device shown in this figure is a feeder heavy duty circuit breaker 103a inserted between a substation 101a and a contact wire 102a.
, a heavy duty circuit breaker 103b inserted between the substation 101b and the contact wire 102b, and two sections 104.
a switching circuit breaker 106a inserted between the middle section 105 and the trolley wire 102a separated by a switching circuit breaker 106b inserted between the middle section 105 and the trolley wire 102b; 108 and a track circuit 107 that detects the presence or absence of the feeder.
) as shown in heavy duty circuit breaker 103a, contact wire 102a
When the electric train 108 is running in direction A using electric power from the substation 101a supplied through the substation 101a, the switching circuit breaker 106a is closed and the switching circuit breaker 106b is closed.

Then, if there are people in the middle section 105 of the train 108,
Electric power supplied from the contact wire 102a via the switching circuit breaker 106a allows the electric train 108 to run in a state where it can be operated in the forward direction.

After this, if the train 108 continues to run and the presence of a train is detected by the track circuit 107 as shown in FIG. 5(b),
After the switching circuit breaker 106a is shut off based on this detection result, the switching circuit breaker 106b is closed approximately 0.35 seconds later, and the middle section 106 is powered by power from the substation 101b.
5 is pressurized.

Then, when the train 108 continues to run and the track circuit 107 detects that there is no train in the middle section 105 as shown in FIG. 5(C), the switching breaker 106b is shut off based on this detection result. After about 0.35 seconds, the switching circuit breaker 106a is closed and the middle section 105 is pressurized by the power from the substation 101a.

Thereafter, the electric train 108 runs on electric power supplied from the substation 101b via the heavy duty circuit breaker 103b and the contact wire 102b.

(Problem to be solved by the invention) By the way, in such a conventional feeder line switching device,
When the train】-08 passes through the middle section 105, the switching of each switching circuit breaker 106a, 106b causes a voltage of approximately 0.35
Due to the second-second power outage, electric power regeneration of the electric train 108 becomes impossible, and the electric power regeneration brake cannot be used during this period.

Therefore, there is a problem in that the frequency of use of the mechanical brake increases.

The present invention has been made in view of the circumstances set forth in 2.It is an object of the present invention to provide a feeder line switching device that enables the use of electric power regenerative braking even in the middle section when a train is using electric regenerative braking. There is.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, a feeder line switching device according to the present invention is inserted between each contact wire and the middle section and between each of the contact wires and each substation. a plurality of circuit breakers; a determination unit that determines whether or not the train is in a regenerative operation state when the train enters the middle section from one contact wire; and the determination unit determines whether the train is in the regenerative operation state. When it is determined that, until the train ends the regenerative operation state, each of the circuit breakers is controlled to cut off the connection between the other contact wire and the substation corresponding to this contact wire, and at the same time The present invention is characterized in that it includes a control section that connects the middle section and the other contact wire to the contact wire to form an extended feeder wire.

(Function) In the above configuration, if the train entering the middle section from one of the contact wires is in a regenerative operation state, this is detected by the determination unit. Based on this detection result, the control unit controls each circuit breaker to cut off the connection between the other contact wire and the substation corresponding to this contact wire until the train finishes regenerative operation. , the middle section and the other contact wire are connected to the one contact wire to form an extension feeder line.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of a feeder line switching device according to the present invention.

The feeder line switching device shown in this figure includes a heavy duty circuit breaker 3a inserted between a substation 1a and a contact wire 2a, and a
heavy duty circuit breaker 3b inserted between contact wire 2b and contact wire 2b
, a switching breaker 6a inserted between the middle section 5 separated by the two sections 4 and the contact wire 2a, and a switching breaker inserted between the middle section 5 and the contact wire 2b. 6b, and a track circuit 7 that detects the presence or absence of a train 8.

Furthermore, this feeder line switching device includes an instrument current transformer 10 that detects the current flowing through the middle section 5, and an instrument transformer 11 that detects the voltage of the current detected by the instrument current transformer 10. , a power direction detection device 12 that detects when regenerative power flows from the middle section 5 to the substation la side based on the respective outputs of the instrument current transformer 10 and the instrument transformer 11; It includes two transmission devices 13 that transmit closing/closing commands to the heavy duty circuit breaker 3b and the switching circuit breaker 6b based on the output of the detection device 12.

Next, the operation of this embodiment will be explained separately for the case where the electric train 8 is performing electric power regeneration operation and the case where it is performing continuous operation.

When the train 8 is performing electric power regeneration operation> First, when the electric train 8 is running on the rail 14 in the direction of arrow A while using the electric power regeneration brake as shown in FIG. The electric power regenerated by 8 is returned to the substation 1a via the contact wire 2as and the heavy duty circuit breaker 3a.

However, in this state, although the switching circuit breaker 6a is closed, the train 8 has not yet entered the middle section 5, and the regenerative current is not detected by the instrument current transformer 10, so the power direction detection device 12 doesn't work.

When the train 8 enters the middle section 5 as shown in FIG. 2(b), the regenerative power from the train 8 is returned to the substation 1a via the switching circuit breaker 5a and the contact wire 2a. Correspondingly, the regenerative current is detected by the instrument current transformer 10, and the regenerative voltage is detected by the instrument transformer 11.

As a result, the power direction detection device 12 issues an extended power feeding command and transmits it to the transmission device 13 to open the heavy interconnection breaker 3b, and after this opening operation is completed, closes the switching breaker 6b, Middle section 5 and contact wire 2b
and is an extension of the contact wire 2a.

After that, even if the train 8 travels further and the presence of a train is detected by the track circuit 7 as shown in FIG.
As shown in Figure (d), even if the track circuit 7 detects that there is no train, while the train 8 is in the power regeneration state, the heavy disconnector 3b is in the open state, and the switching circuit breakers 6a and 6b are closed. held in state.

Then, while the train 8 is passing through the middle section 5 as shown in FIG. 2(c) and (d), or after passing through the middle section 5 as shown in FIG. 2(e), the electric power regenerative brake is used. If this is stopped, the instrument current transformer 10 will no longer detect the regenerative current, and in response, the power direction detection device 12 will cancel the extended feeding command.

As a result, the transmission device 13 opens the switching circuit breaker 6b, and after this opening operation is completed, the switching device 13 opens the switching circuit breaker 3b.
is introduced, and the middle section 5 and the contact wire 2a are cut off from the contact wire 2b.

As a result, the electric train 8 becomes able to travel using electric power from the substation 1b.

When the electric train 8 is running in the 4th direction> First, the electric power from the substation 1a supplied through the heavy duty circuit breaker 3a1 and the contact wire 2a as shown in FIG.
When the vehicle is running in the direction A in a running state, the switching circuit breaker 6a is closed and the switching circuit breaker 6b is closed.

When the electric train 8 enters the middle section 5, the electric power supplied from the contact wire 2a via the switching circuit breaker 6a causes the electric train 8 to run in a continuous state.

In this state, current is detected by the instrument current transformer 10, but since the direction of this current is opposite to that during regenerative operation, the power direction detection device 12 does not issue an extended feeding command.

After this, when the train 8 continues to run and the presence of a train is detected by the track circuit 7 as shown in FIG.
After 35 seconds, the switching circuit breaker 6b is closed and the middle section 5 is pressurized by the power from the substation 1b.

Then, when the train 8 continues to travel and the track circuit 7 detects that there is no train in the middle section 5 as shown in FIG. 3(c), the switching circuit breaker 6b is shut off based on this detection result. Approximately 0.35 seconds after this, the changeover circuit breaker 6a is turned on and the middle section 5 is powered by the power from the substation 1a.
is pressurized.

Thereafter, the electric train 8 runs on electric power supplied from the substation 1b via the heavy duty circuit breaker 3b1 and the contact wire 2b.

In this way, in this embodiment, 11
When the heavy train 8 enters the middle section 5, the heavy speed breaker 3b is shut off and the changeover circuit breaker 6b is closed until the train 8 stops power regeneration operation, and the switching circuit breaker 6b is closed to disconnect the middle section 5 and the contact wire 2b. Since the contact wire 2a is made to be an extension of the contact wire 2a, when the electric train 8 is using the electric regenerative brake, the electric regenerative brake can also be used in the middle section 5, and thereby the mechanical brake can reduce the frequency of use.

〔Effect of the invention〕

As explained above, according to the present invention, when the electric train uses electric regenerative braking, electric regenerative braking can be made usable even in the middle section, thereby reducing the frequency of mechanical brake use. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the feeder line switching device according to the present invention, and FIGS. 2(a) to 2(e) are schematic diagrams each illustrating an example of the operation of the same embodiment during power regeneration operation. , FIGS. 3(a) to 3(e) are schematic diagrams for explaining an example of the operation of the same embodiment during continuous operation, and FIG. 4 is a system showing an example of a conventionally known feeder line switching device. Figure, Figure 5 (a, )
-(C) are schematic diagrams for explaining an example of the operation of the feeder wire switching device shown in FIG. 4, respectively. 1a, 1b... Substation 2as 2b... Contact wire 3a, 3b... Heavy speed breaker 5... Middle section 6 a s 6 b... Switching circuit breaker 8... Train 10...・Judgment part (instrument current transformer)

Claims (1)

[Claims] (1) A plurality of circuit breakers inserted between each contact wire and the middle section and between each of the contact wires and each substation, and when a train enters the middle section from one of the contact wires, a determination unit that determines whether or not the electric train is in a regenerative operation state; and when the determination unit determines that the electric train is in a regenerative operation state, each of the circuit breakers is operated until the electric train ends the regeneration operation state. Control to disconnect between the other contact wire and the substation corresponding to this contact wire, and to connect the middle section and the other contact wire to the one contact wire to form an extended feeder line. A feeder line switching device characterized by comprising: and.