JPS5846922B2 - Feeding power control method for linear motor railways - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides for a railway using ground-to-ground linear motors to have two adjacent substations overlapping each other via a switch. The present invention relates to a method for reducing the number of feeder shafts as much as possible, while also preventing the length of train operation intervals from being extended.

The conventional feeding system for linear motor railways will be explained with reference to FIG.

Near motor power converter 2A at substations IA and IB,
2B is provided, and supplies power at a frequency commensurate with the speed of trains 5A, 5B existing in that section to the ground coils via feeder lines 3A, 3B.

Further, the train 5A is connected to the substations IA and 1B via the train position detection device 10.

A speed control device 4A for controlling the speed of 5B.

4B are connected to each other.

Since the trains 5A and 5B generally run at different speeds, the power supplied by the linear motor power converters 2A and 2B has completely different frequencies and different current values, so in the unlikely event that the substation 1B section If train 5A were to enter, not only would this train not be supplied with the correct power, but substation 1B would be unable to determine which train should be supplied with the appropriate power, which would disrupt the operation of preceding train 5B. It becomes like this.

Therefore, the speed of the train 5A is controlled by the speed control device 4A so that the so-called principle of substation blockage, in which only one train can enter one substation section, is observed, and the speed is controlled so that the train 5A is stopped before entering the substation 1B. will be done.

Therefore, if substations are provided corresponding to the block sections of conventional railways, a large number of trains can be operated at almost the same train spacing as in conventional railways.

However, since power converters for linear motors are very expensive, it is economically impossible to provide substations at intervals corresponding to conventional block sections.

Particularly near stations, where preceding trains stop or slow down to give way, it is necessary to subdivide the block section in order to run trains at short intervals.

Figure 2 shows an example of the length of a block section near a station on the Tokaido Shinkansen.If it is not subdivided in this way, a brake signal will be given to the following train, and when the preceding train stops at the station, the following train will also have to stop temporarily. This will result in you not getting any results.

To avoid this, it is necessary to delay the arrival time of the continuing train at the station.

In other words, it is necessary to widen the interval between trains, which reduces the number of trains per unit time and therefore reduces transportation capacity.

In conventional railways, each train is equipped with a motor.
Motor control is carried out on each individual train, so
1 from the substation to trains in each of these block sections.
Although it is possible to supply power in parallel from
In the case of the following linear motor system, the train motor is considered to be located in a substation, so it becomes necessary to install a substation for each block, but this may significantly impair its economic efficiency.

The present invention solves the above-mentioned drawbacks and provides a feeding control method that does not significantly shorten the distance between substations even in the vicinity of a station and maintains short train operation intervals.

An embodiment of the present invention will be described below with reference to FIG.

Switch 7 is located between one substation and 1B near station 6.
It is designed to be variable between A and 7B.

In other words, when switch 7A is turned on and switch 7B is opened, the substation's single-person overlap space is divided into room division points 9A to 9C, and substation IB's overlap space is It is from room division point 9C to 9D, and the block section also corresponds to this.

Also, when switch 7A is open and switch 7B is on, the substation 1A and IB room division points are 9A-9, respectively.
It changes between B and between 9B and 9D.

A switch control device 8 for controlling the switches 7A and 7B is connected to the switches 7A and 7B.

When the preceding train 5B enters the station 6, the switch 7A is closed and the switch 7B is opened.

Therefore, the preceding train 5B receives power from one person at the substation.

When the train position detection device 10 detects that the train 5B has passed the rearmost compartment division point 9B, the switch control device 8 opens the switch 7A and closes the switch 7B, so that the train 5B is supplied with electricity from the substation 1B. become.

Therefore, the following train 5A can enter up to the compartment division point 9B.

After the preceding train 5B stopped at the station, it started moving again and arrived at room division point 9C.
When the train position detection device 10 and switch control device 8 are exceeded, the train position detection device 10 and the switch control device 8
As a result, switch 7A is turned on and switch 7B is opened, so that the following train 5A approaches the compartment division point 9B, and the following train 5A approaches the compartment division point 9B.
The train tries to apply the brakes in order to stop, but since the section between room division points 9B and 9C is connected to substation 1A, it is guaranteed that the train will be able to reach the room division point 9C.
Since the train stops at station 6 without applying unnecessary brakes, normal operation can be continued.

When the train 5A crosses the cutting room dividing point 9B, the switch 7A is opened again when the train 5B crosses the cutting room dividing point 9D, and the switch 7B is turned on to switch the train 5B to power feeding from the substation 1B. It controls people to prepare for the approach of the following train.

Figure 4 explains the operation 4A of the speed control device, where train 5B is stopped at station 6 and the block boundary is 9BG.
When this is determined, the control output of the speed control device 4A becomes a distance speed pattern as shown by the dotted line in FIG.

is given. Even if train 5B departs from the station in this state, the following train 5A will continue to be controlled to stop at 9BG unless the switch is used to change the overlap distance.
At the position shown in Figure 4, the speed is reduced to 1.

On the other hand, if the overlapping interval is changed to 9C using the G switch as in the present invention, the control output of the speed control device 4A becomes the dotted line shown in FIG.

Therefore, the following train 5A can run smoothly without being subject to inappropriate speed restrictions, and can run with a short head.

Further, even if the preceding train does not pass through the overlap points 9C-9D, the following train 5A is brought to a stop between the overlap points 9B-9C, and the switch 7A is activated.

By opening both substations 7B and 1B, one substation can prepare for the next train's approach, and substation 1B can supply power to the preceding train 5B.

When the preceding train 5B has passed through the superimposed division points 9C and 9D, the switch 7B is turned on and the substation 1B is powered between the compartment division points 9B and 9D to control the following train 5A.

In this way, by overlapping a portion of the superpositions using switches, it is possible to create more block sections than the number of substations.

The instant feeding power disconnection method for linear motor railways according to the present invention can shorten the interval between trains without increasing the number of expensive substations, thereby increasing the economic efficiency of above-ground linear motor railways. .

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the conventional power supply method for ground-level linear motor railways, Figure 2 is the Tokaido Shinkansen (near Odawara Station)
An explanatory diagram showing an example of a block section of a down main line. Figure 3 is an explanatory diagram when the feeding power control method of the present invention is applied to a ground-level linear motor railway. Figures 4 a, b, and c are speed control devices. It is an explanatory diagram of the operation. 1A, IB...Substation, 2A, 2B...Power converter for linear motor, 3A, 3B...Feeding line, 4A. 4B...speed control device, 5A, 5B...train, 6.
... Station, 7A, 7B... Switch, 8... Switch control device, 9A, 9B, 9C, 9D... Superposition equinox,
10...Train position detection device.

Claims (1)

[Claims] 1 Supplying the necessary power to the ground coil via the feeder line from the substation in the railway using the ground-type linear motor,
In the weighting method for controlling speed, parts of the feeder sections of two adjacent substations are overlapped with each other via switches, and power is supplied to the feeder lines in the overlap section according to the position of the train on the line. Selectively connect the substations with the above switches so that only one of the two substations supplies power, change the above switches according to the position of the train, and set the block range determined from the state of the switch. A method for controlling the energization of near-motor railways by providing a controlled speed signal to the substation so that the following trains can operate without any trouble.