JPS59137223A - Equipment for supplying electricity to electric rolling stock - Google Patents

Abstract

PURPOSE:To prevent the operation of a rolling stock from being affected by the trouble of a power substation on the ground, by providing a backup power substation for each for groups of power substations on the ground. CONSTITUTION:Power substations 31A-31F are provided on the ground, exclusively for sections insulated from each other by insulators 29, 30, so that the substation 31E is backup substation provided in the substation 31D. These substations are connected to the sections through contactors 41A-41F. The adjacent substations are connected to each other through contactors 42A-42F. Normally, the contactors 41A-41D, 41F are on, the contactors 41E, 42A-42D are off, they are coupled to the insulated sections, and the substation 31E is backup. If the substation 31B has become defective, the contactors 41C, 42C are turned off and on, respectively, to substitute the substation 31E for the substation 31C, and the contactors 41B, 42B are turned off and on, respectively, to disconnect the defective substation 31B and substitute the substation 31C for it. According to this constitution, the number of backup power substations is decreased and a power transmission loss is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Description of the Technical Field] The present invention relates to a power supply device for an electric vehicle that backs up the power supply when a ground transformer that supplies magnetic force to the electric vehicle fails.

[Description of prior art]

First, the Ikegami I'' control device for magnetic vehicles, which is the premise of the present invention, will be explained. FIG. 1 shows a conventional vehicle control device. Direct current or alternating current of constant voltage is supplied from the substation 20 on the ground.
It is supplied to the overhead wire 21. Electric vehicle 22 receives this power through current collector 28 or ground wheels 24 . 'The nausea vehicle 22 includes a main motor 25 and a control device 26 that controls the speed of the vehicle by controlling the voltage and current supplied to the main motor 25. Instructions from the driver of the electric vehicle 22 are given to this control device 26 to control the speed of the electric vehicle. In addition, there are various electrical devices such as auxiliary machines, but they are omitted in FIG.

(1) (a) This figure 1 shows that multiple magnetic vehicles can be placed in one substation section, and that it is only necessary to always supply power at a constant voltage from the substation, making it easy to set up a substation. There are some advantages. However, it is necessary to install a control device on the vehicle to control the main motor. Since this control device requires sophisticated equipment to control the electric power, it is large in volume and weight. - For example, in the case of a normal electric car ('electric car) or a mole rail, this control device and its related devices account for 10 to 20% of the empty car. This means that such a large amount of dead load is constantly being transported, which results in a large loss in terms of the amount of magnetic force consumed during load transport.

(b) On the other hand, in the case of a mole rail, the load on one tire is very severely restricted. When the train is full, it will be stuck in this 1itlJ limit, so it is recommended that the number of passengers be reduced when the train is full, such as by intentionally increasing the number of seats to block up the floor space of the train, or by installing an equipment room in the cabin. It adheres to strict load limits.

In addition, in terms of equipment mounting capacity, in the case of mole rails, especially in the case of the system where the track is held under the floor (! (seat type), the effective mounting volume is taken up by the track.In order to obtain the effective mounting volume under the floor for loading this control equipment, However, there are cases where the interior of the vehicle has to be made wider.This is required due to the body width, double track width, and room for firefighting when this vehicle is used on narrow roads such as 18m roads, such as modern urban transportation. This becomes a major obstacle because it does not match the width of the vehicle.

(2) From the perspective of construction costs, modern transportation systems are often built on roads, and in that case they are elevated. In this case, it is better for the vehicles traveling on it to be lighter in order to reduce the construction cost of the elevated structure, which accounts for nearly 60% of the elevated structure. Furthermore, in the case of the above-mentioned eight-seat mole, if the width of the vehicle is narrowed and the length of the vehicle is made longer, the spacing between the live load points on the girder can be increased. In terms of results,
The moment applied to the girder can be reduced. Therefore, the girder span can be made longer and the overall number of girder supports can be reduced. Because girder supports are piled at their foundations according to the strength of the ground, reducing this number will greatly contribute to reducing track construction costs, especially when building abbreviations on weak ground.

(3) Next, when considering the operational costs of maintaining and operating such transportation systems, on-board equipment is constantly exposed to adverse environments such as vehicle vibrations and wind and rain, so equipment on the ground is less expensive than equipment on the ground. In comparison, its maintenance costs a lot. At the same time, the efficiency of use of the vehicle decreases because the vehicle is out of service during the required maintenance period. moreover,
Since the maintenance period for reserve forces is considered based on the failure rate of vehicles, a reserve force for that purpose is required.

Ground control of electric vehicles uses these conventional methods (1) to (1) to (
3) It will be effective in improving the problems and configuring the transportation system that will be required in the future with low construction and maintenance costs.

FIG. 2 shows a circuit corresponding to the basic power supply circuit shown in FIG. 1 regarding vehicle ground control.

An insulating section 29.80 is provided to divide the overhead wire 27.27 and the information transmission line 28, which are fixedly placed on the ground, into certain sections. A substation 31 is provided corresponding to each section of the overhead wires 27, 27 and the information transmission line 28. In this case, if one of the overhead wires is used at the ground position, the insulating section can be omitted.

On the electric vehicle 32 there is a grinder or ground wheel 83° 34
The main motor and the equipment 35 necessary for its protection and circuit switching are mounted, and the speed control part of the main motor is moved to the transformer station 31 on the ground. In addition to these main circuits, an auxiliary circuit is required, and this is omitted in FIG. 2, although the current is collected by separately arranging an overhead wire or the like.

Commands from the driver riding the vehicle 32 are sent from the main controller to the information transmission circuit 86. On-board antenna 37. The information is transmitted to the change station 31 through the information transmission path 28. The substation 31 controls the voltage and current to be supplied to the vehicle 32 by supplying them to the overhead wire according to this command. According to such control, although the speed control section on the vehicle is removed, it is possible to perform the same operation as when a speed control section is provided on the vehicle.

Further, it is possible to reduce the weight of the vehicle and obtain many advantages associated with the weight reduction. -Also, since the speed control unit will be placed on the ground, there is no need to consider vehicle vibrations or dimensional and weight restrictions for mounting on the vehicle, making the device extremely reliable. I can do it.

The above is an overview of vehicle ground control devices. This means that the number of ground substations increases compared to the conventional method, and it is necessary for the vehicle and the ground substation to always correspond to 1=1.

If an above-ground substation fails, the adjacent substation shown in Figure 1 is designed to have a capacity that can supply power to its own section and the adjacent failed substation section, allowing extended power supply.
) In the case of a failure, the ground control system shown in Figure 2 has a 1:1 relationship between the vehicle and the substation, so it is necessary to increase the interval between vehicle operations, and the ground substation If there is a failure, it will affect the operation of the vehicle. 2. [Object of the Invention] The present invention provides a system for detecting a failure in the ground substation in the ground control equipment room of an electric vehicle without affecting the operation of the vehicle. Supply of electric vehicles that can be powered up by backup substations
The goal is to provide equipment.

[Summary of the invention]

A standby &'IT station is installed at a ratio of one substation to a group of ground substations located on the ground, and even if any substation in this group fails, this standby substation will be used as a backup. and disconnect the failed substation.

[Embodiments of the invention]

The present invention will be explained based on one embodiment shown in the drawings.

In Figure 3, dedicated ground substations 81A to 81F are arranged in sections insulated by insulators 29 and 30, forming one group. However, 81E is a backup substation located within the 81D substation. Each substation is connected to its feed section and contactors 41A-41F. At the same time, contactor 4 is installed between adjacent substations.
Connected through 2A to 42D. These contactors 418 to 41F and 42 to 42D constitute a switching device. Under normal conditions, contactors 41A-41D and 41F are closed, contactors 41g and 42A-42D are open, and the substations are connected to independent sections and supply power to the overhead lines. Further, the backup substation 81g is separated from the section and becomes a standby backup.

When substation alB is out of order, contactor 4ic is first opened, contactor 42C is closed, and substation 81C is switched to standby substation 81g. Similarly, the faulty substation 81B is disconnected by opening the contactor 41B and closing the contactor 42B, and the substation 31C is connected as a substation for this section.

If substation 81A fails, contactor 4IC opens,
42C is closed, and the substation 81C is switched to the backup substation 81B. Similarly: Switch substation 81B to 31C with contactor 41B open and 42B closed. Furthermore, contactor 41A is opened and contactor 42A is closed to disconnect the failed substation 81A and connect substation 81B as a substation for this section.

In this way, no matter which substation breaks down, the backup substation 81
Backup is possible using E. In this case, all the substations between the faulty substation and the backup substation must be switched even though the own substation is healthy, so the backup substations are placed approximately in the center of one substation group.

〔Effect of the invention〕

Ground control equipment that directly controls air vehicles on the ground requires a large number of substations, so a backup method for substation failures becomes an issue. According to the present invention, the number of standby substations may be far smaller than the total number of substations, and the capacity and equipment of one standby substation may be equivalent to one substation, making it economical. Each substation can be operated by switching to an adjacent substation, and transmission losses can be reduced by reducing the distance to the adjacent substation regardless of the location of the standby substation.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the power supply circuit of a conventional electric vehicle.
FIG. 2 is a block diagram showing the structure of a conventional ground control device for an electric vehicle, and FIG. 3 is a block diagram of a substation for the ground control device according to the present invention.

Claims (1)

[Claims] An electric vehicle that collects current from a sickly insulated overhead wire in each section and runs as a unit for each section of the overhead wire, and a substation that supplies magnetic force to the overhead wire and is provided in each section and divided into groups. A backup substation is installed at one of the substations for each group, and when one of the substations fails, the backup substation is installed in the section adjacent to the substation where the backup substation is installed. A substation supplies power, and a healthy substation on the backup substation side of the failed substation sequentially supplies magnetic force to the section on the failed substation side, and has a switching device for disconnecting the failed substation. Car power supply device.