JPS5841211B2 - "Ki" electric wire power supply system for AC electric railways - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply system for a feeder line of an AC electric railway when power is supplied from a plurality of substations to a feeder line consisting of a plurality of closed sections.

Recently, ultra-high-speed electric railways using linear motors have been attracting attention.

Specifically, this is a planar version of an induction motor, with the primary winding installed on ground tracks and the secondary winding installed on top of the vehicle, and the electromagnetic force between them used as propulsion force to drive the vehicle. It is something to do.

As shown in Figure 1, the power supply for this type of linear motor in electric railways involves connecting the feeder line to dead sections D, D2,
・・・・・・Multiple substation sections ISt 28...
…”Divide into NS, and install substation Sl for each substation section.
, S2...SN are arranged, and each substation section IBy
2B..."NS uses a method of supplying power from the corresponding substation.

and each substation section IS. 2S..."NS also has multiple power supply sections F1□~Fx5t F21~
F25......Divided into FN0-FN5, each of these power supply sections is connected to a switch c11-C151C21-C25...
...It is switched by CNI to CN5 so that power is supplied only while a train is running.

That is, if train L1 is currently traveling through substation section 1s,
As it progresses, switching switches Ctt to C1H sequentially connect power supply sections F1□, F1□# F13y from substation S1.
Power was supplied one after another to F14' and F15, and train L
0 enters the substation section S2, the substation S2 supplies power.

By the way, in linear motor type electric cars, the train speed is controlled by varying the frequency of the AC power source from the substation.

On the other hand, since the same AC power supply cannot supply power at two different frequencies, one blockage section is composed of one substation section as in the conventional system, and in contrast to the FLX1 substation section, a system in which two substations correspond The number of substations required is far greater than the number of trains.

For example, if the time required to travel on a track with a total length of 500 km is 3 hours, and trains are operated every 15 minutes, the number of trains on this track will be 12 at any given time, but if one substation section is 10- This would require 50 substations.

In view of this point, it is an object of the present invention to provide a feeder line power supply system for AC electric railways that can reduce the number of substations to the same number as the maximum number of trains without increasing the capacity of one substation.

Therefore, in the present invention, the power supply system in which one substation corresponds to the Vcl blocked section as in the conventional method shown in FIG. 1 is abolished, and each blocked section 1, 2... , can each receive power from a plurality of substations, and one substation can supply power to a plurality of continuous closed sections.

That is, the substation S1 has closed stations 1 to 6 and 3 (not shown).
The configuration is such that power is supplied to three closed sections (not shown), in which the same <82 is the blocked sections 1 to 9, B3 is the blocked sections 4 to 12, B4 is the blocked sections 7 to 15, and B5 is the blocked sections 10 to 15. By doing this, one substation in Figure 2 can supply power to nine consecutive blocked sections, and therefore, one blocked section can receive power from three substations, which reduces the number of substations compared to the conventional method in Figure 1. This is an example in which the amount is reduced to 1/3 compared to that of the previous example.

Although not shown in this figure, each blocked section is divided into a plurality of power supply sections, and each of these power supply sections is sequentially switched by a switch as the train progresses.

The actual number of substations to be installed will be determined by taking into consideration the number of blocked sections, the number of trains operating at all times, and the economic efficiency of power loading distance.

In the above-described power stacking configuration, various methods can be considered for how to correspond between the substation and the train when supplying power to the train.

Next, to explain one example, (1) the number of trains ≦ the number of substations, and 2) the number of trains should not be allowed to enter one blocked section, and each train should be supplied with power from the one nearest substation. As a general rule, when there are multiple trains and substations between stations, the power loss between each substation and each train is minimized in order to minimize power loss in the loading lines from each substation to each train. Try to choose a combination that minimizes the total power loading distance. 3) At the moment of switching substations, power should be supplied by letting the train run.

Substations and substations can be switched when moving from one blocked section to the next, or even within a blocked section when conditions for switching arise as the train progresses.

Now, suppose there are 10 blocked sections between stations A and B as shown in Figure 3, the number of substations is 4 (81 to S4), and the number of trains going from station A to station B is 3 (T0 to T3). , the combination of substation and train can be determined as follows.

However, it is assumed that each substation S1 to S4 can supply power to any closed section between AB stations.

In the same figure, 41, 12, and 13 are each train T1 from A station. T2
．． Distance to current position of T3, 18191B2'e 1
8391s4 is A station and each substation St.

82, B3. It shows the distance between S4.

(b) The distance between train T1 and each substation is T1-8l...l 1l-181T1-82.
・・・・・・l 11-18□T1-83・・・・・・l
1l-183T1-84...l 1l-18
41 (b) The distance between train T2 and each substation is T2-81...l 12-A's.

T2-82...112-182 T2-83...112-183 T2 B4...112-184 and the rest are similarly connected between train T3 and each substation 81 to S4. You can find the distance.

Next, considering the combination of substation and train (a)
When train T0 is fixed at substation S1 T1-81. T
2-82. T3-83 // 〃T3 B4 // T2-83. T3-82 1 # T3-84 // T2-84 T3-82 p I/ T3 B3 etc.) Train T1
If fixed at substation S2, T1-82. T2-8
L T3-83 and the following 6 ways (c) If train T1 is fixed to substation S3, T1-
83. 6 VCs for T2-81, T3-82 and below (if electric train T1 is fixed at substation S4, T□-84
, T2-81. T3-82 Similarly, 6 to 24 combinations are possible.

For these valleys, the shortest one is selected from among the total power loading distances vXi between each substation and each train, and power is supplied.

In reality, all that is required is to collect the information necessary for the central processing unit and select the most suitable substation based on that information.

This is one mode of the power supply system, and various other methods are possible.

For example, it is possible to consider a method in which a plurality of specific blocked sections of a certain substation are fixed, and the fixed relationship is broken only under special conditions.

In any case, no more than one train can enter a blocked section, and in a blocked section where a train exists, only one of the multiple substations that can supply power is responsible for supplying power to that train, and all of the substations Alternatively, in some cases, as the train progresses, power is supplied across at least two or more blocked sections as a general rule.

With this type of power supply system, trains in a certain blocked section are supplied with power from one substation, so speed control is possible by frequency control, and all or part of the substations can be connected to multiple substations as the train progresses. Since power is supplied across the blocked section, the number of substations can be reduced.

For example, if one substation can track and supply power to one train over the entire line, ignoring electrical special orders and losses during loading, the number of substations can be reduced to the maximum number of trains and the same number of substations as the number of trains.
Moreover, there is no need to increase the capacity of the substation.

According to the present invention described above, it is possible to provide a stacking line power feeding system for an AC electric railway, which can reduce the number of substations without increasing the capacity of the substations, and can therefore greatly contribute to reducing construction costs.

[Brief explanation of the drawing]

Figure 1 Loading line power supply system diagram of near motor type electric railway,
FIG. 2 is a load line power supply system diagram according to an embodiment of the present invention, and FIG. 3 is a diagram showing one aspect of a combination of a substation and a train according to the same embodiment. St, S2...SN... Substation, 1,
2, 3...Closed section, Lly LN p T
1 t T2 t T3...Curved train.

Claims (1)

[Claims] 1. In order to supply power from multiple substations to multiple blocked sections consisting of multiple power supply sections that are sequentially supplied with power as the train progresses, one substation can supply power to multiple blocked sections, and one blocked section can supply power to multiple blocked sections. In a blocked section where a train is present, only one of the multiple substations capable of supplying power is in charge of supplying power to the train, and all or part of the substations can receive power from at least two substations as the train progresses. A feeder line power supply system for AC electric railways that is characterized by supplying power over three or more closed sections.