JP2858529B2 - Train operation curve creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train operation curve creation device for automatically creating an operation curve required for a train operation plan.

[0002]

2. Description of the Related Art FIG. 4 is a functional block diagram of a conventional operation curve creating device disclosed in, for example, the 27th National Symposium on Use of Cybernetics in Railways.
In the figure, 1 is a train vehicle condition input unit for registering train vehicle conditions 2 such as vehicle weight, overhead line voltage, and acceleration force curve, and 3 is a route condition input unit for registering route conditions 4 such as a stop, a slope, and a curve. Is a traveling condition input unit for registering traveling conditions 6 such as a speed limit and a stop pattern. Reference numeral 7 denotes a speed limit line creating unit that creates a speed limit line based on the route condition 4 and the traveling condition 6. Reference numeral 8 denotes a speed limit line creating unit 7 that creates a train speed condition 2, a route condition 4, a traveling condition 6, and a speed limit line creating unit 7. The operation curve automatic creation unit that creates an operation curve according to the first control rule 9 that describes the transition rules of the operation modes (powering, coasting, and braking) using the limited speed line as basic data, and 10 is an automatically created operation curve. On the display.

Next, the operation will be described. The train set condition 2, the route condition 4, and the traveling condition 6 on the route to be planned for operation are registered in advance. Speed limit line creation unit 7
Creates a speed limit line that defines a speed range for creating an operation curve based on the registered route condition 4 and running condition 6. Next, the operation curve automatic creation unit 8 switches the running mode of the train according to the created speed limit line and a first control rule 9 described later, and based on the running mode, the train set condition 2 and the route condition The necessary data is extracted from the driving conditions 4 and the running conditions 6 to automatically create an operation curve. The created operation curve is drawn on the CRT by the operation curve drawing unit 10.

[0004] The operation of the operation curve automatic creation section 8 will be described with reference to FIG. FIG. 5A shows an example of an operation curve to be created from the departure point a ₀ to the next stop point a _1, which is created based on the speed limit line 11. FIG.
(B) is the first control rule 9. First, the starting point a ₀
Does not change the speed limit, the control rule 9b
There are applied, using the notch corresponding to the speed limit at that until the starting point of the starting point a ₀ reaches the limit speed line power running, the process proceeds to coasting reaches the speed limit line. The notch corresponding to the speed limit is the highest notch that can be taken with respect to the speed limit, and the tensile force at this time is shown in FIG.
The acceleration / deceleration according to the gradient and the running resistance according to the curve are calculated from the acceleration force curve shown in FIG.
Draw the speed curve calculated from. Also, the coasting line is drawn up to the point where the speed limit line drops (dotted line portion). The subsequent calculation of the speed curve is performed by extracting necessary data in the same manner.

[0005] Next, in the point a ₂ apply control rule 9c because the speed limit is low, creating a braking (brake) curve in opposite directions the maximum speed to the start of the next interval, the order created earlier Cross with the driving curve of the direction. This operating curve from a starting point a ₀ to the point a ₂ is created by the. Then to the point a ₃ is the speed limit line is transferred to coasting in accordance with the control rule 9b so is constant. Since the speed limit becomes high at point a _3, control rules 9d is applied, the power running curve until hitting the point a ₄ from the point plus the train length to the point a ₃ reaches the speed limit line, then coasting curve Create Is subject to the following depots stop point a ₁ in the control rule 9e, the speed is 0 at a point a _1,
From there, a braking curve is created in the opposite direction. Then, it intersects with the previously created forward running curve. Operating curve 12 to the next depot stop point a ₁ is created from a starting point a ₀ as described above. The powering time and the coasting time are secured according to the control rule 9a. At the same time, the running time t _L is calculated by integrating the created running curve, and the time / minute curve 13 is created. Further, the current value at each traveling position is obtained from the acceleration force curve of FIG. 5C, and the amount of power consumed from the starting point to the next stop point can be calculated.

[0006]

Since the conventional train operation curve creating apparatus is configured as described above, in the automatic creation, it is possible to create only the operation curve for the fastest running within the speed limit range. In order to create an operation curve corresponding to the inter-station travel time planned with an operation time greater than the operation time for the fastest running, the operation curve must be manually created based on the created time-minute curve. It needed to be fixed. In addition, there is a problem that it is not possible to obtain an operation curve that minimizes the amount of power consumption when driving at a designated running time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to designate the running time between stations as an arbitrary running time larger than the running time in the case of the fastest running. It is an object of the present invention to obtain a train operation curve creation device capable of creating an operation curve that minimizes the amount of power consumption during the time between stations.

[0008]

A train operating curve creating apparatus according to the present invention calculates an operating time from a starting point to a next stopping point from an operating curve created in accordance with a predetermined first control rule. Means for designating a predetermined value greater than the obtained operation time, the value is created in accordance with the first control rule as long as the difference between the operation time and the specified operation time is equal to or less than a predetermined value. Means for setting a plurality of operation curves in which the powering portion existing in the operation curve is reduced by a predetermined amount, and calculating the power consumption in each of the set operation curves, and selecting the operation curve in which the power consumption is the minimum. Means.

Further, means for dividing the operating curve from the starting point to the next stop point into sections containing only one powering element, created according to a predetermined first control rule, and each of these divided sections Means for setting a plurality of operating curves by re-combining the power running portions obtained in step (a) independently reduced by a predetermined amount.

Further, a plurality of driving curves are set by re-synthesizing a reduced power running portion in each of the divided sections by N × △ D (N is a natural number and △ D is a predetermined unit distance). doing.

[0011]

According to the present invention, the power running portion existing in the operation curve created according to the first control rule is located within a range in which the difference between the designated operation time and the operation time is equal to or less than a predetermined value. An operation curve with the minimum power consumption is selected from the plurality of operation curves that have been quantitatively reduced.

In addition, the operating curve created in accordance with the first control rule is divided into sections including only one powering element, and the divided powering portions in each of the divided sections are independently reduced and recombined. An operation curve with the minimum power consumption is selected from the plurality of operation curves formed.

Further, a plurality of driving curves formed by recombining the power running portions in each of the divided sections reduced independently by N × ΔD (N is a natural number, ΔD is a predetermined unit distance). Among them, the operation curve that minimizes the power consumption is selected.

[0014]

【Example】

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numerals 1 to 10 are the same as or equivalent to those of the conventional apparatus. Reference numeral 14 denotes an operating hour / minute specifying unit for specifying the operating hour / minute. Reference numeral 15 denotes an operating hour / minute comparison unit for comparing the operating hour of the operating curve corrected by a second control rule 16 described later with the specified operating hour. The determination unit 17 is a powering power amount calculation unit that calculates the powering power amount from the corrected operation curve, and the powering power amount determination unit 18 determines whether the calculated powering power amount is the minimum.

Next, the operation will be described. First, in the same manner as in the prior art, a running curve is created in the range of the speed limit in accordance with the first control rule 9 using the train set condition 2, the route condition 4 and the running condition 6 as basic data. Further, the inter-station traveling time t _L is calculated from the created operation curve. Subsequently, the generated operation curve is corrected in accordance with the second control rule for reducing the amount of power running power when the vehicle runs for the specified operation time. The reason why the second control rule is to reduce the powering power is from the idea that the magnitude of the power consumption is most dependent on the powering power,
The purpose is achieved by shortening the powering section. The operation curve correction process will be described with reference to FIGS. FIG. 2 is a diagram for explaining the correction of the driving curve. The driving curve 12 is divided into a section 1 and a section 2 each including one powering portion, and the difference between the driving time and the driving time specifying the inter-station driving time is calculated. The distance x ₀ and the distance y ₀ of the powering portion of each section are reduced to x and y, respectively, within a range not more than a predetermined value,
This shows that the operation curve 19 is obtained.

FIG. 3 is a flowchart showing a process for correcting the operation curve according to the second control rule. First, the inter-station traveling time T planned by the operator is designated by the driving time / minute designation unit 14 (S1). The inter-station travel time T is a value greater than the operation time t _L obtained from the operation curve created according to the first control rule. Next, the driving curve created by the first control rule is divided into sections (section 1 and section 2) in which the powering portion is included only once (S2). Thereafter, the operation time of the section 1 is t _1N , the powering electric energy is P _1N , the operation time of the section 2 is t _2M , and the powering electric energy is P
_2M . First, N = 0, L = 1 (S3), x = x
As ₀ (S4), fixing the power running part of the section 1 to x _0.
Then, M = 1 (S5), y = y 0 (S6) to initialize. Next, the powering portion y of the section 2 is reduced by a small amount Δy (S7), and an operation curve in the section 2 at that time is obtained (S7).
8). Then, the operation time t _2M of the section 2 is calculated (S
9) Compare the sum t _L of the operation time t _1N of the section ₁ and the operation time t _2M of the section 2 with the specified operation time T, and | t _L −
If T |> δ (NO in S10), L = L + 1,
Assuming that M = M + 1 (S11), the process returns to S7, and the powering portion in section 2 is further reduced by Δy.
Loop 1 which is the processing of 0 is repeated.

As described above, when the powering portion x of the section 1 is fixed and the powering portion y of the section 2 is reduced in the processing of the loop 1, if | t ₁ −T | ≦ δ is satisfied (S10)
And YES), the powering electric energy P _{1N in} section 1 at that time
And the sum of the powering power amount P _{2M in} the section 2 is calculated (S12).
The electric energy in each section is calculated by integrating the following equation for each section, where I (v) is a voltage value as a function of the speed v and V is a voltage obtained from the acceleration force curve in FIG. 5C. You. P = VI (v) the running power amount is intended to power running portion of the section 2 with respect to operation curve is decreased from the initial value y ₀ by M × △ y,
The power amount is reduced as compared with the electric energy for the operation curve created according to the first control rule.

Next, N = N + 1 is set (S13), and section 1
Is reduced by a small amount Δx (S14), and an operation curve in the section 1 at that time is obtained (S15). And
The operation time t _1N of the section 1 is calculated (S16), and if the sum of the operation time t _1N of the section ₁ and the initial operation time t ₂₀ of the section 2 is equal to or less than the specified value T (NO in S17) ), L = L + 1 (S18), and the loop 2 of S5 to S17 is repeated. That is, the operation time t _1N of the section ₁ and the section 2
If the sum of the initial operation time - t ₂₀ of greater than the specified value T,
Since it is impossible to reduce the powering part any more,
As one restriction condition that at least the sum of the operation time is equal to or less than a specified value, an operation curve for continuously reducing the power running portion in the section 2 to reduce the power running power amount is obtained.

If the sum of the operation time t _1N in the section ₁ and the initial operation time t _{20 in the} section 2 becomes larger than the specified value T (YES in S17), the flow proceeds to S12 in the loop 2 by that time. The minimum value of the sum of the calculated powering power amounts of the sections 1 and 2 is calculated (S19), and an operation curve for obtaining the minimum value is selected and drawn (S20). As described above, it is possible to create an operation curve that minimizes the amount of power running or the amount of power consumption when the vehicle travels in a range where the difference from the designated operation time is within a predetermined value. Note that, in the above description, a case has been described in which the powering portion is divided into section 1 and section 2 with two powering portions, but the same effect can be obtained when there are three or more powering portions. Further, in the above example, the powering power amount is reduced by reducing the powering portion of each section by the unit distance, but the same effect can be obtained by reducing the powering power amount by the unit time. Further, in the above example, the driving curve created by the first control rule is divided into sections including only one powering portion, and the powering portions in the divided sections are reduced independently. A similar effect can be obtained even if all powering portions are reduced at the same time without division.

[0020]

As described above, according to the present invention, according to the first control rule, the difference between the designated travel time between stations and the drive time is within a predetermined value or less. Since the running curve that minimizes power consumption is selected from a plurality of running curves created by reducing the powering portion of the created running curve, the power consumption is minimized at the specified running time An operation curve can be created. In addition, the driving curve is divided into sections including only one powering portion,
In a range where the difference between the sum of the running time and the designated time in each of the divided sections is equal to or less than a predetermined value, a plurality of reconstructed ones in which the powering portions in each section are reduced independently are formed. Since the operation curve with the minimum power consumption is selected from the operation curves, it is possible to create the operation curve with the minimum power consumption in the specified travel time. Further, as long as the difference between the sum of the running time and the designated time in each of the divided sections is equal to or less than a predetermined value, the powering portion in each of the divided sections is independently reduced by a unit distance. Since the operation curve with the minimum power consumption is selected from the plurality of combined operation curves, it is possible to create the operation curve with the minimum power consumption at the specified traveling time.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a train operation curve creation device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a process of correcting an operation curve according to a second control rule of FIG. 1;

FIG. 3 is a flowchart illustrating a process of correcting an operation curve according to a second control rule of FIG. 1;

FIG. 4 is a functional block diagram showing a conventional train operation curve creation device.

FIG. 5 is a diagram illustrating a first control rule of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formation vehicle condition input part 2 Formation vehicle condition 3 Route condition input part 4 Route condition 5 Travel condition input part 6 Travel condition 7 Speed limit line creation part 8 Operation curve automatic creation part 9 First control rule 10 Operation curve drawing part 14 Operation hour / minute designation unit 15 Operation hour / minute comparison / determination unit 16 Second control rule 17 Powering / running power amount calculation unit 18 Powering / running power amount determination unit

Claims (3)

(57) [Claims] 1. A train operation curve creation device for automatically creating a train operation curve in accordance with a first control rule that is defined as basic data based on a train set condition, a route condition, and a traveling condition. Means for designating the operating time up to a point to a predetermined value greater than the operating time obtained from the operating curve created in accordance with the first control rule; Means for setting a plurality of operating curves in which the power running portion existing in the operating curve created according to the first control rule is reduced by a predetermined amount within a range in which the difference is equal to or less than a predetermined value; A train operation curve creation device characterized by comprising means for determining the amount of power consumption in the system and selecting an operation curve that minimizes the amount of power consumption. 2. A means for dividing an operation curve from a start point to a next stop point into sections containing only one powering element, which is created according to a predetermined first control rule, and each of the divided sections. 2. The train operation curve creating device according to claim 1, further comprising means for recombining the power running portions of the power running portions independently reduced by a predetermined amount to set a plurality of operation curves. 3. The powering portion in each of the divided sections is independently N × △ D (N is a natural number, and △ D is a predetermined unit distance)
3. The train operation curve creation device according to claim 2, wherein a plurality of operation curves are set by re-synthesizing the reduced operation curve.