JPS60245408A - Power supply switching method in substation in electric railcar - Google Patents

Abstract

PURPOSE:To switch a substation by an operator without any intention when an electric railcar runs from a block section having an electric railcar to next block section. CONSTITUTION:When an electric railcar 6A receives power through a switch 34p and a trolley wire 23 from a substation 1A to run and receives a stop signal from a ground element 37 before a station (l), the railcar stops at the prescribed position on the element 35m in the station (l) according to a deceleration pattern. When the railcar 6A stops, a car controller 12 transmits a substation power switch request signal from a car transmitter 13 under the conditions that the output of a tachometer generator 15 is 0 and a stop signal from the element 35m is input. A substation controller 32m opens a switch 34p, closes 34q, opens a switch 34s and closes 34r when the preceding car does not exist in the next block section to supply power from the substation 1m. Then, a stop presence release signal is transmitted from the element 35m.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a method for moving an electric vehicle from a substation in that block section to a substation in the next block section when the electric car is running from one block section to the next block section. The present invention relates to a substation power supply switching method for an electric vehicle that switches the power supply to a substation.

[Technical background of the invention]

First, a ground control method to which the present invention is applied will be explained. Figure 1 shows the conventional control method for electric cars. From the substation 1, constant voltage direct current and alternating current are transferred to the contact line 2.
supplied to The electric car 6 takes this power into the electric car 6 through a current collector or ground wheels 3,7. The electric vehicle 6 includes a main motor 5 and a control device 4 that controls the speed of the vehicle by controlling the voltage and current supplied to the main motor 5. First, the driver's instructions are given to the control device 4,
The speed of the electric car 6 is controlled. In addition, there are various electrical equipment such as auxiliary equipment, but they are omitted and not shown in this figure.

This method has the advantage that multiple electric cars can be installed in one substation section, and that the substation can simply supply power at a constant voltage. However, it is necessary to install a control device on the vehicle to control the main motor. On-board control devices require advanced functions to control electric power, and are large in volume and weight.

- For example, in the case of a normal electric vehicle (electric vehicle) or a mole rail, this control device and its related devices account for 10 to 20% of the empty weight of the vehicle. However, this amount of dead cargo is constantly being transported, which results in a large loss in terms of power consumption during driving.

On the other hand, in cases such as Morrail, the load on one tire is very strictly limited, so if the passenger capacity is full, this limit will be exceeded. This strict load limit was met by creating an equipment room so that no passengers could board the train when it was full.

In addition, in terms of equipment mounting capacity, in the case of a mole rail, especially in the case of a system where the track is held under the floor (straddle type), the effective mounting volume is taken up by the track, so the effective mounting volume under the floor for loading this control device is required. In order to ensure this, there may be cases where the K has no choice but to make the inside of the car wider. This is like modern urban transportation18
m - When this vehicle is used on a narrow road such as a passageway, the width of the vehicle body, double track width, and space for firefighting cannot be met, which is a major obstacle. Considering the construction cost. 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 this elevated system. In addition, in cases such as the above-mentioned straddle-type mole rail, if you create a longer vehicle by narrowing the inside of the car, you can widen the distance between the live load loading points on the girder, which ultimately reduces the moment applied to the girder. Since it is possible to reduce the number of girder supports, the girder span can be made longer and the number of girder supports can be reduced as a whole. Because girder supports are piled at their foundations depending on the strength of the ground, reducing the number of girder supports will greatly contribute to reducing track construction costs, especially when constructing a line on weak ground.

Next, when considering the operational costs of maintaining and operating such transportation systems, on-board equipment is constantly exposed to harsh environments such as vehicle vibrations and wind and rain, so it costs more than equipment on the ground. Not only does maintenance cost a lot of money, but because the vehicles are out of service during the necessary maintenance period, their efficiency in use decreases, and in order to prevent the failure rate of the vehicles, additional vehicles are required to be used as spare vehicles. A car will be needed.

The ground control method is a vehicle control method that is effective in improving the deficiencies of these conventional methods and configuring the transportation systems that will be required in the future with low construction and maintenance costs. FIG. 2 shows an embodiment of the ground control method. This presents a circuit corresponding to the basic power supply circuit shown in FIG.

The overhead contact lines 23X, 23Y and the insulating sections 27X, 27Yfc are fixedly arranged on the ground, and are divided into sections, and a substation IA is installed corresponding to each section of the overhead contact lines 23X, 23Y and the information transmission line 30.

An IB will be established for each. In this case, if one of the contact wires, for example 23Y, is used at ground potential, the insulating section 27Y can be omitted.

The electric car 6A is equipped with a current collector or ground wheels 3A and 7A, a main motor and equipment 25 necessary for its protection and circuit replacement, and the speed control section of the main motor is carried out at substations IA and IB on the ground
Move inside. In addition to these main circuits, an auxiliary circuit is required, and this is accomplished by collecting current from a separately arranged overhead contact line, etc. (not shown).

Commands from the driver of the electric vehicle 6A are transmitted from the main controller to the substation IA through the information transmission device 28, the on-board antenna 29, and the information transmission path 30. The substation IA controls the voltage and current supplied to the vehicle by supplying them to the overhead wires in accordance with this command. By using this method, even though the speed control section on the vehicle is removed, it is possible to achieve the same effect as when the speed control section is placed on the vehicle, and it is possible to reduce the weight of the vehicle. The above-mentioned advantages associated with this can be obtained. Additionally, since the speed control unit is placed on the ground, there is no need to consider vehicle vibrations or size and weight restrictions for mounting it on a vehicle, making it an extremely reliable device. .

[Problems with background technology]

In the above-mentioned ground control method, in principle, one electric car is controlled in one block section, so
When driving an electric car from the current block section to the next block section, the crew must make sure that there are no preceding electric cars in the next block section, and then When the power supply to the substation in the block section where the electric vehicle is located must be stopped, the power supply must be switched to the substation in the next block section at the same time, which not only takes time but also reduces reliability and safety. There are also problems in terms of gender.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and its purpose is to enable train crews to switch substations without being aware of the need to switch substations when traveling from one block section to the next. The present invention provides a safe and reliable substation power supply switching method for an electric vehicle.

[Summary of the invention]

In order to achieve the above object, the present invention detects the stoppage of the electric car and detects that the electric car has stopped at a fixed position when the electric car runs from the current block section to the next block section. On the condition that both signals are input to the onboard controller, the substation power is supplied from the onboard controller to the controller of the substation in the next block section via the information transmission device. A switching request command signal is sent out, and the controller of the substation gives the power supply switching command to the power supply switching device provided at the corresponding division point.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Third
The figure shows a configuration example for explaining the substation power supply switching method in an electric vehicle according to the present invention. As shown in Fig. 3, overhead contact lines 23q, 23r, 2 are fixedly placed on the ground.
3m and insulating parts 27p, 27q, 27r, and 27s are provided to separate the front and rear positions of stations t and m, and one block section is defined between stations t and m. train line 23
q, 23r, 238 and information transmission path 30p, 3
Substation 11 corresponding to each block section of 0r, 30L
, 1m, and lnf. In addition, 30q, 30
Reference numeral 8 denotes an information transmission line arranged between the dividing points at the front and rear positions in the premises of stations t and m. Substation IL, 1 m,
1nK is equipped with substation controllers 32t, 32m, 32n and power converters 33t, 33m, 33n,
Power converters 3: 3L, 33m, and 33n are connected to overhead contact lines 23q, 23r, and 238 in that section, and substation controller J2Z + 32m + 32n is connected to information transmission lines 30p, 30r, and 30t in that section. Ground receiver 31p, 3
1r and 31t. In addition, substation controllers 321.32 are connected to the information transmission line 30q between the station and the premises.
m is connected via a ground receiver 31q, and a substation controller 32m is connected to the information transmission path 308 within station m.

32n is connected via a ground receiver 31m. Furthermore, insulators are provided at each division point of the overhead contact line.

Power supply switch 34p, 34q, 34r,', at both ends of 27p, 27c4.27r, 27m
? 4g are connected respectively, and the power supply switch 34p,
34q is opened and closed by an interlock device 34t into which a control command from the substation controller 32m is input, and power supply switch 34r+34s is an interlock device into which a control command from the substation controller 32n is input. i 34 m
It is designed to be opened and closed automatically.

On the other hand, a current collector 7A, a main motor, and equipment 25 necessary for its protection and circuit switching are installed on the electric car 6A, and an onboard controller that always sends a train presence signal ``2N'' is installed on the car. 12, Onboard child 17, Onboard receiver 14, ATS with speed check
A device 18, a display 16, an on-board transmitter 13, an on-board antenna 29, and a speedometer generator 15 are included in the installation bag. In addition, 371.37 m is the ground transceiver installed at the planned distance from the station stop, rrr, and 3 5 m,
35n is a ground switch installed at a predetermined position inside the station,
Switches 36m and 36n, which are switched by commands from substation controllers 32m and 3-2n, are connected to the input terminals of these ground switches 35m and 35n.

Next, the operation will be explained based on an example of the system configuration as described above. In FIG. 3, if it is assumed that the switch 34p is currently closed, power is being supplied from the substation 1t to the power line 23q. Therefore, electric car 6A is
Since electric power is supplied from 3q to the main motor device 25 via the current collector 7A, the electric car 6A travels from the right side to the left side in the figure, and eventually arrives at station t.

The relationship between the beacon and the operation monitoring speed at this time is shown in FIG. That is, assuming that the electric car 6A is traveling from the right side of the figure drawing a curve at the operating speed U as shown in FIG. When received, stop indication (v3
code) is displayed on the display 16 in the driver's cab. Electric car 6A
ATS device 1 with speed check is activated by receiving this ■3 code.
B causes the horse to decelerate and turn (speed limit for travel distance), and while monitoring the actual speed of the vehicle, the driver drives below this deceleration pattern and reaches the 35m ground cross at station t.
It stops at the fixed position above.

Next, when the electric car 6A stops at a fixed position at station t, the onboard controller 12 detects that the output signal of the speedometer generator PA15 is O (speed O) and that the stop signal from the ground coil 35m has been input. The substation power supply switching request signal "1" is output under the condition.

This substation supply.

The power switching request signal "1" is transmitted from the on-board transmitter 13 to the on-board antenna 29 and to the ground receiver 31q via the information transmission path 30q.
The ground receiver 31q sends the received signal to the substation controller 321.32m. Then, the substation controller 32m gives a switching control command to the ink lock device 34t, and simultaneously opens the switch 34p and closes the switch 34q. Therefore, electric car 6A's power supply from substation 1t is cut off, but power is instead supplied from substation 1m to contact line 23r, so power is continuously supplied until the next station m. It becomes possible to run.

In this case, the ground wire 35 is used as an answer to the completion of switch switching.
As shown in Figure 4, m means ■ 3 code means stop indication cancellation ■ Switch to 4 code and display 1 on the driver's cab on the vehicle.
6, something other than a stop signal is displayed.

Here, the operation of the controller 32m of the substation 1m will be explained with reference to the flowchart shown in FIG. first,
In the controller 32m of the substation 1m, a substation power supply switching signal n l n is transmitted from the electric car 6A through the information transmission line 30q.
Upon receiving this, the processing of Job 1 begins. That is,
In block 51, it is first determined whether there is a received signal from the ground receiver 31r or 31m and whether there is a preceding vehicle on the information transmission path 30r or 30m, and if there is no received signal, the block is activated. Proceed to step 52. If there is a received signal, it is checked periodically in block 51 until it disappears.

In block 52, the controller 3 of the substation 1n in the next block section
Input the open/close status of the power supply switch 34g and 34r sent from 2n through the cable 38m, and switch to the power supply switch 34r.
Check whether 348 is closed and open, and if so, proceed to block 53; if not, switch to power supply switch 34.
Check until r is closed and 34s is open. In block 53, a command is issued to the interlock device 341 to open the power supply switch 34p and close the power supply switch 34q, and the interlock device 34t returns the open/closed state of the power supply switch 34p and 34q to the controller 32m of the substation 1m. . and next block 5
4, it is checked whether the power supply switch 34p is closed and the power supply switch 34q is closed, and if so, the process proceeds to block 55.
If not, the check is repeated at block 54.

In block 55, in order to switch the resonator of the ground coil 35m, the switch 36m is set to the a side (v3 code indicating a stop condition).
Switch to the ypb side (■4 code indicating cancellation of stop indication). Then, the receiver 14 is transmitted via the onboard element 17 of the electric car 6A.
The fact that the V3 code has been switched to the V4 code is transmitted to the ATS power supply with speed check 18, and the result is displayed on the display 16.
It is displayed on the display 16 as a stop indication release signal at the location corresponding to the v4 code, and the controller 32m of the substation 1m
The train presence signal “2” is sent to

At one block 56, power supply switch 34p and 3-44
The open/close status of the substation 1t is sent to the controller 321 of the substation 1t through the cable Jet, and the series of processing is completed.

Eventually, the door of the electric car 6A is closed, and the power supplied from the power converter 33m of the substation 1m in the next blockage section through the overhead contact line 23r and the power supply switch 34q is supplied to the main motor device 25 via the current collector 7A. Depart from station t. electric car 6
When A enters the information transmission path 30r of the next section, the ground receiver 31r receives the train presence signal "2n" constantly sent from the electric car 6A, and transmits the received signal to the controller 32 of the substation 1m.
Send to m. Then, the controller 32m of the substation 1m starts Job 2 shown in FIG. That is, in order to switch the ground wire 35m to the V code at block 6, the contact of the switch 36m is switched from the a side to the b side. Then, in the next block 62, the interlock device i34/1. issue a command to
Thereafter, in block 63, the open/close states of the power supply switching devices 34p and 34q are monitored, and if the command is ON, the process proceeds to block 64. In block 64, the result is transmitted to the controller 321 of the substation 1t through the cable 381, and the process ends.

Therefore, if such a substation power supply switching method is adopted, power supply switching will be performed automatically according to a command from the substation controller when an electric car is traveling from one block section to the next block section, so the train crew will not have to worry about anything. There is no need to issue a switching command, making it safe and reliable.

〔Effect of the invention〕

As described above, according to the present invention, when the electric car is caused to travel from the current block section to the next block section, the stop of the electric car is detected and the ground terminal detects that the electric car has stopped at a fixed position. The onboard controller sends a substation power supply switching command signal to the substation controller on the condition that it is detected by a signal from Since the power supply switching command is given to the power supply switching device, it is possible to provide a safe and reliable substation power supply switching method in an electric vehicle that allows the crew to switch the substation without being aware of it. .

[Brief explanation of drawings]

・ Figure 1 is a schematic diagram for explaining the conventional electric vehicle operation control method, Figure 2 is a schematic diagram for explaining the electric vehicle operation control method using the ground control system, and Figure 3 is a diagram for explaining the operation control method for electric vehicles using the ground control method. A configuration diagram of an electric vehicle operation control system for explaining the substation power supply switching method in an electric vehicle, FIG. 4 is a turn diagram showing the relationship between the ground coil and operation monitoring speed in the same embodiment, and FIG. It is a figure which shows the flowchart for demonstrating the effect|action of the substation controller in the same Example. It, 1m, In... Substation, 23q~238...
Tram line, 6A...electric car, 7A...current collector, 12.
... Onboard controller, 13... Onboard transmitter, 14... Onboard receiver, 15... Speedometer generator, 16... Display, 18... ATS device with speed check , 27p-278・
...Insulator, 30p~30t...Information transmission path, 31p
~31t...Ground receiver, 32t+ 32m+
32 n°°゛Substation controller, 331.33m, 33n
...Power converter, 34p~J4g...Power switching device,
34t, 34m...Interlock device, 35m. 35n,, 97t, 37m... Ground coil 1. ? 6
m +36n...Switcher. Applicant's agent Patent attorney Takehiko Suzue

Claims (2)

[Claims] (1) A contact line is laid along the track on which electric cars run, dividing this electric lane into multiple block sections, and a power supply switching device is installed at each division point to switch the power supply between each block section. A substation equipped with a controller is installed in each block section, and driving commands from electric cars running on the track are sent to the substation connected to the block section via an information transmission device. In a system in which electric power is supplied from the electric station to the electric car via the contact line to control the operation of the electric car, when the electric car runs from the current block section to the next block section, , on condition that the stoppage of the electric car is detected, and that the electric car has stopped at a fixed position is detected by a signal from the ground element, and both signals are input to the onboard controller. A substation power supply switching request command signal is then sent to the controller of the substation in the next block section via the information transmission device, and the controller of the substation transmits the power supply switching request signal provided at the corresponding division point. A substation power supply switching method for an electric vehicle, characterized by giving a power supply switching command to a substation. (2) A contact line is laid along the track on which electric cars run, and this contact line is divided into multiple block sections, and a power supply switching device is installed at each section point to enable switching of power supply between each block section. In addition, a substation equipped with a controller is installed in each block section, and driving commands from electric cars running on the track are sent to the substation connected to the block section via an information transmission device, In a system for controlling the operation of the electric car by supplying power from the substation to the electric car via the overhead contact line, when the electric car runs from the current block section to the next block section, the electric car from the onboard controller on the condition that the stoppage of the vehicle is detected and that the electric vehicle has stopped at a fixed position is detected by the signal from the ground element, and both signals are input to the onboard controller. A substation power supply switching request command signal is sent to the controller of the substation in the next block section via the information transmission device, and when the controller of the substation receives this substation power supply switching request command signal, it transmits the substation power supply switching request command signal to the controller of the substation in the next block section. A power supply switching command is given to the power supply switching device installed at the point, and when it is confirmed that the substation power supply switching by the power supply switching device is completed, a substation power supply switching completion signal is transmitted to the onboard controller. A substation power supply switching method for an electric vehicle, characterized in that: