JP2021046151A - Rail electric potential calculation device and rail electric potential calculation method - Google Patents

Abstract

To solve the difficulties of designing equipment in which all combination conditions related to train operation, such as increasing the number of trains in response to accidents and failures, are defined in advance, and to address the possibility of the rail electric potential exceeding an upper limit when fixing a timetable.SOLUTION: A rail electric potential calculation device includes: a storage unit that holds required information; and an arithmetic logical unit that executes calculation processing and determination processing. The storage unit saves equipment information regarding railway power equipment and rails, train information regarding the correspondence between positions of trains running between stations and electric power consumption, train timetable information, and information regarding the rail electric potential upper limit and allowable duration for the time exceeding the upper limit. The arithmetic logical unit calculates the train position and electric power consumption at a set time using the train information and timetable information, calculates the rail electric potential using the calculation result of the train position and electric power consumption and the equipment information, and determines whether the time exceeding the upper limit value of the rail electric potential exceeds the allowable duration based on the calculation result of the rail electric potential.SELECTED DRAWING: Figure 2

Description

The present invention relates to a rail potential calculation device and a rail potential calculation method in a track traffic system using a rail as a return line.

In electrified railways, a configuration that uses rails as a return line is widely adopted. In this configuration, when power is consumed to accelerate a train or to operate lighting and air conditioning devices in the car, a current corresponding to the power consumption flows through the rail between the train and the substation. Here, a potential difference due to an electric current is generated according to the electric resistance between the position of the train on the rail and the position where the negative electric wire of the substation is connected.

The European standard for railways (EN50122) sets an upper limit for the difference between the potentials of each part of the rail during train operation and the state where power is not transmitted, in order to prevent workers working near the rail from receiving an electric shock due to the potential difference. ing.

The railway operator instructs the manufacturer to keep the rail potential difference below the upper limit along with the conditions for continuing train operation, such as the train operation time interval of the train schedule and the state where one substation has failed.
On the other hand, the manufacturer examines the location and number of substations under conditions such as train schedules, and installs equipment with a rail potential difference of less than or equal to the upper limit.

Further, in Patent Document 1, when calculating the electric power equipment of a railway including electric power utilization technology such as a storage battery, the overhead wire voltage reflecting the power consumption of the train is calculated, and the calculation result exceeds the threshold value. Shows how to perform calculations including power utilization equipment.

Japanese Patent No. 5855275

If the train cannot be operated according to the planned train schedule due to an accident or failure, the railway operator will recover the delay, increase the number of trains, adjust the operation interval, etc., and therefore change the schedule to repair the disturbed train schedule. Occurs.

In this process, if an unplanned number of operations or recovery operation is instructed at the time of considering the introduction of a substation, etc., the rail potential, which was below the upper limit at the time of considering the introduction, may exceed the upper limit. It will be necessary to re-examine the installation. In addition, at the time of considering the introduction, if it is difficult to define all the combination conditions related to operation such as the occurrence of timetable disorder and the number of trains to be operated for recovery, the rail potential will set the upper limit when repairing the timetable. There will continue to be a need to consider confirming that it does not exceed.

Patent Document 1 determines the power consumption of a train, but does not describe the relationship with the rail potential.

An object of the present invention is to determine whether the rail potential exceeds the upper limit value and display the determination result when creating, changing, or modifying a train schedule.

The rail potential calculation according to the present invention includes a storage unit that holds required information and a calculation unit that executes calculation processing and determination processing, and the storage unit provides equipment information related to railway power equipment and rails, and between stations. It holds train information regarding the correspondence between the position of the running train and the power consumption, train timetable information, the upper limit of the rail potential, and the allowable duration information for the time exceeding the upper limit, and the calculation unit performs the train information and the information of the allowable duration for the time exceeding the upper limit. The train position and power consumption at the set time are calculated using the timetable information, the rail potential is calculated using the calculation result of the train position and power consumption and the equipment information, and the rail potential is calculated based on the calculation result of the rail potential. It is characterized in that it is determined whether or not the time exceeding the upper limit value of is exceeding the allowable duration.

According to the present invention, when a train schedule is created, changed, or modified, it can be determined whether the rail potential exceeds the upper limit value, and if it exceeds, the determination result can be displayed.

It is a block diagram which shows an example of the structural outline of the rail potential calculation apparatus which concerns on Example 1 of this invention. It is a block diagram which shows an example of the functional structure of a rail potential calculation apparatus. It is a figure which shows the flowchart of the process which a rail potential calculation processing unit executes. It is a figure which shows an example of a data item, a range and a value of a power device data. It is a figure which shows an example of a data item, a range and a value of a train data. It is a figure which shows an example of the data item, the range and the value of the diamond data. It is a figure which shows the flowchart of the process which a rail potential upper limit determination processing part executes. It is a figure which shows an example of rail potential upper limit data. It is a block diagram which shows an example of the functional structure of the rail potential calculation apparatus which concerns on Example 2 of this invention. It is a figure which shows the flowchart of the process which a rail potential calculation target determination data creation processing part executes. It is a figure which shows an example of the rail potential calculation target condition data. It is a figure which shows the flowchart of the process executed by the limited rail potential calculation processing unit. It is a figure which shows an example of the rail potential calculation target original data. It is a figure which shows an example of the position, the electric power used, and the rail potential of each train at a predetermined time in Example 1. FIG. It is a figure explaining an example of the positional relationship of each train at a predetermined time in Example 2. FIG. It is a figure which shows an example of the configuration in which the rail potential calculation device and the operation management device shown in FIG. 1 are linked. It is a figure which shows an example of the structure which links the rail potential calculation device and the operation management device which concerns on Example 1. It is a figure which shows an example of the structure which links the rail potential calculation device and the operation management device which concerns on Example 2.

Hereinafter, Examples 1 and 2 will be described as embodiments for carrying out the present invention with reference to the drawings.

FIG. 1 is a block diagram showing an example of a configuration outline of the rail potential calculation device according to the first embodiment of the present invention.
The device configuration of the rail potential calculation device 1 includes an arithmetic data holding unit 11, an arithmetic unit 12, and an information interface unit 13. The rail potential calculation device 1 corresponds to, for example, a computer such as a general personal computer or a server.

The rail potential calculation device 1 outputs the calculation result to the external display device 2. The display device 2 is, for example, a known liquid crystal display, a dot matrix LED, a CRT display, or the like, and displays output information from the rail potential calculation device 1.

The arithmetic data holding unit 11 has a function of storing programs and data, and is configured by using a known storage device such as a hard disk drive (HDD), a solid state drive (SSD), or a flash memory.

The arithmetic unit 12 has a function of executing a program and temporarily holding information during control, and is configured by using known parts such as a CPU and registers of a personal computer, for example.

The information interface unit 13 has a function of transmitting and receiving information between internal and external devices, for example, an Ethernet (registered trademark) connector, a USB port, a network using an optical fiber, a wireless LAN, a mobile phone, and the like. It is configured by using known parts and means such as a wireless network of the above or wireless communication using frequency modulation.

Further, FIG. 16 shows an example in which the rail potential calculation device 1 according to the first embodiment of the present invention is configured in a form linked with the operation management device 4. Here, as an outline of the internal configuration of the operation management device 4, similarly to the rail potential calculation device 1, the calculation data holding unit 11, the calculation unit 12, and the information interface unit 13 are provided. The information interface units 13 of each of the rail potential calculation device 1 and the operation management device 4 are connected, data and the like are transmitted and received as necessary, and the processing is executed in cooperation with each other.

FIG. 2 is a block diagram showing an example of the functional configuration of the rail potential calculation device 1 according to the first embodiment.
The rail potential calculation device 1 holds rail potential upper limit data 21, power device data 22, train data 23, and diamond data 24, and includes a processing unit including a rail potential calculation processing unit 31 and a rail potential upper limit determination processing unit 32. The rail potential calculation result data 41 is stored as the processing result. Specific processing by each part of the rail potential calculation device 1 and specific examples of information held by each data part will be described later.

The rail potential calculation processing unit 31 performs processing using the electric power device data 22, the train data 23, and the diamond data 24, and outputs the rail potential calculation result data 41.

The rail potential upper limit determination processing unit 32 performs processing using the rail potential calculation result data 41 and the rail potential upper limit data 21, and displays and outputs the determination result to the external display device 2.

FIG. 3 is a diagram showing a flowchart of processing executed by the rail potential calculation processing unit 31. The main body that executes the processing is the rail potential calculation processing unit 31, but the description of the main body is omitted in the following description of each step.

In step 1001 (S1001), the process is started.
In step 1002 (S1002), the electric power device data 22, the train data 23, and the diamond data 24 are read.

Here, FIG. 4 shows an example of data items, ranges, and values of the power device data 22.
The electric power device data 22 is data including the length of the target line, the number of substations on the line, the position and the transmission overhead wire voltage, the resistance value per length of the electric wire, and the resistance value per length of the rail.

Specifically, from FIG. 4, the length of the target line is -1 to 6.0 km, and there are two substations 102 and 103 on the line, each of which is 1.5 km. It is 3.5 km. The overhead line voltage sent from each substation is 1500 V, and the resistance values per length of the wire and rail are 0.015 Ω / km and 0.025 Ω / km, respectively.

Further, FIG. 5 shows an example of data items, ranges and values of train data 23.
The train data 23 is data including the correspondence between the train position and the traveling time (required time) for each station, and also includes the correspondence between the train position and the power consumption. The item of "consumption or regenerative power" shown in FIG. 5 indicates power consumption or regenerative power as the power consumption corresponding to the position of the train, and the positive case is the power consumption and the negative case is the regenerative power.

Specifically, from FIG. 5, it can be seen that the value is 1 as the type of train, and for example, the power consumption (power consumption) is 400 kWh at the point where the train position is 0.0 km.

Next, FIG. 6 shows an example of data items, ranges, and values of the diamond data 24.
The diamond data 24 is data including the number of stations on the target line, the position of the stations, the number of trains in operation, and the correspondence of the times when each train arrives or departs at each station.

Specifically, from FIG. 6, the number of stations is three (stations 201 to 203), and the total number of running trains is four (trains 301, 302, 311 and 312). For example, it can be seen that the train 301 departs from station 202 at time 6: 3:15 and arrives at station 203 at time 6: 5: 7.

In step 1003 (S1003), the time range to be calculated is determined. The time range to be calculated is, for example, the time from the current time to the end of running of all the trains described in the timetable data 24. Alternatively, it may be any time range from 6: 3: 0 of the current time. Here, as the time until the end of running of all trains, the time from the timetable data 24 shown in FIG. 6 to the time 6: 7: 22 is targeted.

In step 1004 (S1004), the calculation target time is set. Here, since the time range of the calculation target is determined to be from the current time of 6: 3: 0 to the time of 6: 7:22 in the previous step 1003 (S1003), the time of the calculation target is set from this range to the current time. 6: 3: 0.

In step 1005 (S1005), the position and power consumption of each train at the calculation target time are calculated. Here, from the timetable data 24, there are four trains, 301, 302, 311 and 312, so that the timetable data 24 and the train data 23 are used for the time 6: 3: 0 set in step 1004 (S1004). Processes are performed in order using.

First, the position of the train 301 and the power consumption are given by the following equations (1) and (2).
(A) Train 301
・ Position (time 6: 3: 0) = Stopping at station 202 = 2.5km point Formula (1)
-Power consumption (time 6: 3: 0) = 100kWh formula (2)

In step 1006 (S1006), it is determined whether or not the process has been executed for all trains. If there is an unprocessed train (“No”), the process returns to step 1005 (S1005) and the process is repeated. When the execution of the processing for all the trains is completed (“Yes”), the process proceeds to step 1007 (S1007).

In the previous example, the trains 302, 311 and 312 have not been processed, so step 1005 (S1005) is executed for them. As a result, at the stage of proceeding to step 1007 (S1007), the positions and power consumption for the trains 302, 311 and 312 are also acquired. The results are shown in equations (3) to (8).

(B) Train 302
-Position (time 6: 3: 0) = 30 seconds after departure from station 201 = range of 0.0 to 0.5 km from station 201 toward station 202 = range of -0.5 to 0.0 km Formula (3)
-Power consumption (time 6: 3: 0) = 400kWh formula (4)

(C) Train 311
-Position (time 6: 3: 0) = 75 seconds after departure from station 203 = Range of 2.0 to 2.5 km from station 203 toward station 202 = Range of 3.0 to 3.5 km Formula (5)
-Power consumption (time 6: 3: 0) = -350kWh formula (6)

(D) Train 312
・ Position (time 6: 3: 0) = Before departure from station 203 = Not subject to calculation Formula (7)
-Power consumption (time 6: 3: 0) = 0kWh formula (8)

In step 1007 (S1007), the rail potential is calculated based on the position of each train and the power consumption. The rail potential is calculated, for example, by calculating the resistance value of the wire or rail from the difference between the position of the train and the position of the substation, and the voltage drop of the wire and rail and the train with respect to the voltage of the overhead wire sent out from the substation. It is calculated assuming that the voltage drop with respect to the power consumption of is balanced. Here, regarding the position of the train, when the station is stopped, the station position is set as the train position, and when the position of the train is a section between stations, the average value at both ends of the section is set as the train position.

Here, from the equation (1), the position of the train 301 is 2.5 km, and from the equation (3), the position of the train 302 is (-0.5 km + 0.0 km) / 2 = -0.25 km. Reflecting this train position, using the power device data 22 shown in FIG. 4, the current i is given by the equation (9).
Overhead line voltage sent from substation = 1500V
= Electric power drop + Rail voltage drop + Train voltage drop = 0.015Ω / km x (distance between substation and train) x current i + 0.025Ω / km x (distance between substation and train) x current i + Train power / current i formula (9)

The currents flowing through the trains 301, 302 and 311 by calculating the formula (9) with respect to the power consumption and the position of the trains shown in the formulas (1) to (8) using the power device data 22 shown in FIG. i can be calculated. As a result, the current at the rail position is determined, and the potential at the rail position can also be obtained by using the rail resistance value of 0.025 Ω / km.

Therefore, the rail potentials at the positions of the trains 301, 302 and 311 are the values of the equations (10) to (12).
-Rail potential of train 301 (time 6: 3: 0) = 40V formula (10)
-Rail potential of train 302 (time 6: 3: 0) = 70V formula (11)
-Rail potential of train 311 (time 6: 3: 0) = 15V formula (12)

In step 1008 (S1008), the rail potential calculation result obtained in step 1007 (S1007) is output to the rail potential calculation result data 41. As a result, the rail potential calculation result data 41 stores the information of the equations (10) to (12).

FIG. 14 is a diagram showing the relationship between the position of each train, the power consumption, and the rail potential at the time of 6: 3: 0. The trains 301, 302, and 311 travel between stations 201 to 203 along the track 3, and the respective positions, power consumption, and rail potential are obtained from the above equations (1) to, as shown in FIG. It is as shown in (12).

In step 1009 (S1009), it is determined whether or not the process has been executed for all the calculation target times. If it is not executed (“No”), the process returns to step 1004 (S1004), and if it is executed (“Yes”), the process proceeds to step 1010 (S1010) to end the process.

Here, all the calculation target times were obtained in step 1003 (S1003) from the current time of 6: 3: 0 to the time of 6: 7: 22. Since the execution was performed at time 6: 3: 0 after step 1004 (S1004), the execution is not performed for all the calculation target times, so the process returns to step 1004 (S1004).

Returning to step 1004 (S1004), the next calculation target time is the time 6: 3: 0 when the calculation has already been executed and 1 second is added as the calculation in a fixed time unit. Run. This procedure is as described above, and this process is repeated until the calculation target time is time 6: 7: 22.

Next, the processing content executed by the rail potential upper limit determination processing unit 32 will be described.
FIG. 7 is a diagram showing a flowchart of processing executed by the rail potential upper limit determination processing unit 32. The main body that executes the processing is the rail potential upper limit determination processing unit 32, but the description of the main body is omitted in the following description of each step.

In step 2001 (S2001), the process is started.
In step 2002 (S2002), the rail potential upper limit data 21 is read.

Here, FIG. 8 shows an example of the rail potential upper limit data 21. The rail potential upper limit data 21 is data including an upper limit value of the rail potential (110 V in the figure) and an allowable duration of a state in which the upper limit value is exceeded (3 seconds in the figure).

In step 2003 (S2003), the rail potential calculation result data 41 is read. The contents of the rail potential calculation result data 41 are as described in the above equations (10) to (12).

In step 2004 (S2004), it is determined whether or not the rail potential calculation result exceeds the condition of the rail potential upper limit. If the determination result is that there is an excess (“Yes”), step 2005 (S2005) is executed, and if there is no excess (“No”), step 2006 (S2006) is executed.

From the rail potential upper limit data 21 shown in FIG. 8, the determination of whether or not the rail potential upper limit value is exceeded is made when the previously calculated rail potential continuously exceeds the upper limit value of 110 V for 3 seconds, which is the allowable duration. , Judge that there is an excess.

Here, the case where the rail potential calculation result data 41 has the data contents of the following equations (13) to (17) will be considered.
-Rail potential of train 301 (time 6: 3: 52) = 114V formula (13)
-Rail potential of train 301 (time 6: 3:53) = 116V formula (14)
-Rail potential of train 301 (time 6: 3:54) = 118V formula (15)
-Rail potential of train 301 (time 6: 3:55) = 117V formula (16)
-Rail potential of train 301 (time 6: 3:56) = 99V formula (17)

From the above, it can be seen that the rail potentials of the equations (13) to (16) exceed the rail potential upper limit of 110 V of the rail potential upper limit data 21 shown in FIG. Further, since this duration is 4 seconds, it exceeds the allowable duration of 3 seconds of the rail potential upper limit data 21 shown in FIG. Therefore, since the condition of the upper limit of the rail potential is satisfied, the condition is satisfied and step 2005 (S2005) is executed.

In step 2005 (S2005), the display device 2 is output to display information regarding the excess of the rail potential upper limit value. As the display content, "rail potential upper limit value exceeded" may be displayed in text or the like, or the time "6: 3: 52 to 6: 3: 55" may be displayed as the time exceeded. Further, the calculation result of the rail potential at the time of exceeding may be displayed, or the position information of the excess train 301 may be displayed.

In step 2006 (S2006), it is determined whether or not the processing has been executed for all the rail potential calculation result data 41. If all the processes have not been executed (“No”), the process returns to step 2004 (S2004) to continue the processes, and if all the processes have been executed (“Yes”), the process proceeds to step 2007 (S2007). Proceed to end the process.

As described above, the rail potential is calculated using the electric power device data 22, the train data 23, and the diamond data 24 according to the flowchart shown in FIG. 3, and the calculated rail potential exceeds the upper limit value according to the flowchart shown in FIG. Whether or not it is present can be determined using the rail potential upper limit data 21.

In the above flowchart, the case where the train travels according to the timetable data 24 has been described. However, as a method of reflecting the actual train operation state, for example, as shown in FIG. 17, the timetable data 24 managed by the operation management device 4 is used. It may be received and used for processing. Here, FIG. 17 is created by referring (for example, downloading) the diamond data 24 used by the rail potential calculation device 1 according to the first embodiment with reference to the diamond data 24 managed by the operation management device 4. is there.
Further, an information transmission device (not shown) may be used to receive time and position correspondence information or time, position and power consumption correspondence information from the train and use it for processing.

The numerical values of the potential upper limit data 21, the electric power device data 22, the train data 23, and the diamond data 24 described above are examples, and even if these numerical values change, they do not interfere with the first embodiment.

In the second embodiment of the present invention, the conditions for performing the calculation are prepared in advance for the calculation processing procedure of the rail potential calculation device 1 according to the first embodiment, and the conditions for performing the calculation by the train schedule are satisfied. This is a method of calculating the rail potential only in the case.

That is, in the second embodiment, a processing procedure is adopted in which the rail potential calculation is not performed when the condition is not satisfied by setting the condition for performing the rail potential calculation. In the first embodiment, all the processing procedures described above are performed every time the train schedule is changed, but in the second embodiment, the rail potential is calculated for a part of the train schedule even if the train schedule is changed. Is.

As a result, when the content of the train schedule is changed, the number of times the rail potential calculation is executed can be reduced, and the total amount of the rail potential calculation executed by the rail potential calculation device 1 can be suppressed.

The basic configuration of the rail potential calculation device 1 is the same as that shown in FIG. 1 shown in the first embodiment.
FIG. 9 is a block diagram showing an example of the functional configuration of the rail potential calculation device 1 according to the second embodiment.

The rail potential calculation device 1 according to the second embodiment has a train operation reflection diagram data 25, a rail potential calculation target determination data creation processing unit 33, and a limited rail potential calculation processing, as compared with the functional configuration of the first embodiment shown in FIG. The difference is that the unit 34 includes the limited rail potential calculation result data 42, the rail potential calculation target condition data 51, and the rail potential calculation target determination data 52.

Similar to the first embodiment, the rail potential calculation processing unit 31 of the rail potential calculation device 1 executes processing using the power device data 22, the train data 23, and the diagram data 24, and outputs the rail potential calculation result data 41. .. Since the processing content of the rail potential calculation processing unit 31 is the same as the content described in the first embodiment, the description thereof will be omitted.

The rail potential calculation target determination data creation processing unit 33 executes processing using each information from the rail potential calculation result data 41 and the rail potential calculation target condition data 51, and outputs the data to the rail potential calculation target determination data 52.

Next, the restricted rail potential calculation processing unit 34 executes processing using each information from the power device data 22, the train data 23, the train operation reflection diamond data 25, and the rail potential calculation target determination data 52, and is restricted. Data is output to the rail potential calculation result data 42.

Further, the rail potential upper limit determination processing unit 32 executes processing using each information from the limited rail potential calculation result data 42 and the rail potential upper limit data 21, and outputs the execution result to the external display device 2.

Regarding the contents of the train operation reflection timetable data 25, the departure time of the station 201 of the train 301 and the departure time of the station 201 of the train 302 are different for the train 301 and the train 302 with respect to the contents described in the timetable data 24. Although different, the time interval between the departure time of the station 201 of the train 301 and the departure time of the station 201 of the train 302 is the same. Similarly, for trains 311 and 312, the departure time of station 203 of train 311 and the departure time of station 203 of train 312 are different, but the departure time of station 203 of train 311 and the departure time of station 203 of train 312. The time interval with and is the same.

FIG. 10 is a diagram showing a flowchart of processing executed by the rail potential calculation target determination data creation processing unit 33. The main body that executes the processing is the rail potential calculation target determination data creation processing unit 33, but the description of the main body is omitted in the following description of each step.

In step 3001 (S3001), the process is started.
In step 3002 (S3002), the rail potential calculation result data 41 is read. The content to be read is data summarizing the position, power consumption, and rail potential of each train of the formulas (1) to (17) shown in the first embodiment.

In step 3003 (S3003), the rail potential calculation target condition data 51 is read. FIG. 11 shows an example of the rail potential calculation target condition data 51. The rail potential calculation target condition data 51 sets the condition determination value of the upper limit value of the rail potential (100 V in FIG. 11) and the condition determination value of the allowable duration in the state exceeding this upper limit value (2 seconds in FIG. 11). It is the data to be included.

Here, among the condition determination values of the rail potential calculation target condition data 51, the upper limit value of the rail potential is equal to or less than the upper limit value of the rail potential of the rail potential upper limit data 21 (shown in FIG. 8) in Example 1. The permissible duration of the state in which the upper limit value is exceeded is equal to or less than the permissible duration of the state in which the upper limit value of the rail potential upper limit data 21 (shown in FIG. 8) in Example 1 is exceeded.

In step 3004 (S3004), the determination result under the condition of the rail potential calculation target condition data 51 is added to the rail potential calculation result data 41 as the presence or absence of achievement, and the rail potential calculation target source data 61 is created. However, the rail potential calculation target source data 61 is data temporarily created when the flowchart is executed (indicated by a dotted line frame in FIG. 10).

FIG. 13 is a diagram showing an example of rail potential calculation target data 61. For trains 301, 302, 311 and 312 at each time shown in FIG. 13, the rail potential calculation result data 41 reflects the position, power consumption and rail potential of the train, and the rail potential and duration are subject to rail potential calculation. The presence or absence of achievement is held from the judgment result using the condition data 51 (in FIG. 13, in each time column, the train position, the power consumption, the rail potential, and the condition judgment result (whether or not the achievement is achieved) are displayed in order from the top of the line. Show).

In step 3005 (S3005), it is determined whether or not execution has been performed for the range of all calculation target conditions. If it is executed (yes), step 3006 (S3004) is executed, and if it is not executed (no), the process returns to step 3004 (S3004).

In step 3006 (S3006), the rail potential calculation target determination data 52 is created from the rail potential calculation target source data 61 created in step 3004 (S3004). Specifically, for the data shown in FIG. 13, the data of the condition that the determination result of the target condition executed in step 3004 (S3004) is achieved is created.

In the following, it is assumed that conditions are created for the number of trains between stations and the power consumption of trains for the position and power consumption of each train shown in FIG.
In the example shown in FIG. 13, only 301 trains are determined to have been achieved (shown in diagonal letters in the figure). It can be seen that the conditions common to the states are that the power consumption of the train 301 is 400 kW and that there are three trains between the station 202 and the station 203 including the train stopped at the station 202. Of these, since the train 302 at time 6: 3: 0 has not been achieved with a power consumption of 400 kW, the power consumption of 400 kW of the train 302 is no longer an achievement condition. That is, as a condition of the train position, it is achieved when the number of trains existing between the station 202 and the station 203 is 3 or more.

As a result, the content of the rail potential calculation target determination data 52 becomes the equation (18).
Rail potential calculation target determination data 52
= The number of trains existing between station 202 and station 203 is 3 or more formula (18)
The content of this equation (18) is retained as the rail potential calculation target determination data 52.
In step 3007 (S3007), the process ends.

FIG. 12 is a diagram showing a flowchart of processing executed by the restricted rail potential calculation processing unit 34.

In step 4001 (S4001), the process is started.
In step 4002 (S4002), the electric power device data 22, the train data 23, and the train operation reflection timetable data 25 are read. Since the processing content is the same as that of step 1002 (S1002) of the first embodiment, the description thereof will be omitted.

In step 4003 (S4003), the rail potential calculation target determination data 52 is read. Here, the content of the rail potential calculation target determination data 52 is the content shown in the above equation (18).

In step 4004 (S4004), the time range to be calculated is determined. Since the processing content is the same as that of step 1003 (S1003) of the first embodiment, the description thereof will be omitted.

In step 4005 (S4005), the calculation target time is set. Since the processing content is the same as that of step 1004 (S1004) of the first embodiment, the description thereof will be omitted.

In step 4006 (S4006), the position and power consumption of each train at the calculation target time are extracted. Since the processing content is the same as that of step 1005 (S1005) of the first embodiment, the description thereof will be omitted.

In step 4007 (S4007), it is determined whether or not the processing has been executed for all trains. If there is an unprocessed train (no), the process returns to step 4006 (S4006) and the process is repeated. When the execution of the processing for all the trains is completed (yes), the process proceeds to step 4008 (S4008).

In step 4008 (S4008), it is determined whether or not the position and the power consumption of each train created in step 4006 (S4006) satisfy the rail potential calculation target determination data 52 read in step 4003 (S4003). If it is satisfied (yes), step 4009 (S4009) is executed, and if it is not satisfied (no), step 4011 (S4011) is executed.

Here, since the content of the rail potential calculation target determination data 52 is the content shown in the equation (18), only when the number of trains existing between the station 202 and the station 203 regarding the position of the train is 3 or more. Judge that the condition is satisfied.

For example, assume that the positions of the trains at time 6: 3: 20 are in equations (19) to (22).
-Position of train 301 (time 6: 3:20) = 5 seconds after departure from station 202 = Range of 0.0 to 0.5 km from station 202 toward station 203 = Range of 2.5 to 3.0 km Formula ( 19)
-Position of train 302 (time 6: 3:20) = 50 seconds after departure from station 201 = Range of 1.0 to 1.5 km from station 201 toward station 202 = Range of 0.5 to 1.0 km Formula ( 20)
・ Position of train 311 (time 6: 3:20) = 95 seconds after departure from station 203 = Range of 2.5 to 3.0 km from station 203 toward station 202 = Range of 2.5 to 3.0 km Formula ( 21)
・ Position of train 312 (time 6: 3:20) = 5 seconds after departure from station 203 = Range of 0.0 to 0.5 km from station 203 toward station 202 = Range of 5.0 to 5.5 km Formula ( 22)

Of these, in equations (19), (21) and (22), the train exists between the station 202 and the station 203. That is, it can be seen that the number of trains existing between the station 202 and the station 203 is 3 (trains 301, 311 and 312). This satisfies the rail potential calculation target determination data 52 shown in the equation (18).
Therefore, in the case of time 6: 3:20, the determination condition of step 4008 (S4008) is satisfied.

FIG. 15 is a diagram showing the positional relationship of each train at the time 6: 3:20 described above. Trains 301, 302, 311 and 312 run between stations 201 to 203 along track 3, and their respective positions are as shown in equations (19) to (22), of which train 301. 311 and 312 exist between the station 202 and the station 203.

In step 4009 (S4009), the rail potential is calculated. Since the processing content is the same as the processing 1007 of the first embodiment, the description thereof will be omitted.

In step 4010 (S4010), the calculated rail potential result is output to the rail potential calculation result data 41. Since the processing content is the same as the processing 1008 of the first embodiment, the description thereof will be omitted.

In step 4011 (S4011), it is determined whether or not the execution is performed for all the calculation target times. Since the processing content is the same as that of step 1009 (S1009) of the first embodiment, the description thereof will be omitted.
At step 4012 (S4003), the process ends.

Further, the rail potential upper limit determination processing unit 32 executes processing using the limited rail potential calculation result data 42 and the rail potential upper limit data 21, and outputs the result to the external display device 2. Since the processing content is the same as the content described in the first embodiment, the description thereof will be omitted.

As described above, the rail potential calculation for the train operation reflection diamond data 25 is performed only when the rail potential calculation target determination data 52 shown in the equation (18) is satisfied. In this way, when the train operation reflection diamond data 25 is changed one or more times, the rail potential is calculated as compared with the configuration in which the rail potential is executed for all the contents of the diamond data 24 shown in the first embodiment. It is possible to reduce the number of times and suppress the total amount of rail potential calculation performed by the rail potential calculation device 1.

Here, as the content of the rail potential calculation target determination data 52, a method of creating conditions for the number of trains between stations and the power consumption of trains has been described, but the position of the rail potential calculation target source data 61 at a time not shown. From the power consumption and the rail potential, the rail potential calculation target determination data 52 may be created by combining the conditions of the number of trains between stations and the power consumption of the trains.

Further, instead of the timetable data 24, the rail potential calculation target determination data 52 may be created by using a plurality of timetable data in which the station departure time of each train is arbitrarily set. In this case, as the content of the rail potential calculation target determination data 52, the operating time interval between trains traveling in the same direction or the difference in station departure time for trains traveling in different directions may be a condition. By creating the rail potential calculation target determination data 52 for the timetable data having a plurality of arbitrarily set station departure times, the time interval of the train stored in the train operation reflection timetable data 25 is different from the timetable data 24. Even in this case, the number of times the rail potential calculation is performed can be reduced.

The train operation reflection timetable data 25 is appropriately changed by reflecting, for example, the occurrence of a train failure, the occurrence of a delay in the operating train, the occurrence of additional operating trains, the occurrence of a station device failure, and the like. You may go.

Further, the respective numerical values of the potential upper limit data 21, the electric power device data 22, the train data 23, the diamond data 24, and the rail potential calculation target condition data 51 shown in the second embodiment are examples, and these numerical values have changed. However, this does not prevent Example 2.

FIG. 18 is a diagram showing an example of a configuration in which the diamond data used in the rail potential calculation device 1 according to the second embodiment is created by using the diamond data managed by the operation management device. Similar to FIG. 17 in the case of the first embodiment, the diamond data 24 included in the rail potential calculation device 1 is created by referring to (for example, downloading) the diamond data 24 managed by the operation management device 4. Is.

1 rail potential calculation device, 2 display device, 3 track, 4 operation management device,
11 Arithmetic data holding unit, 12 Arithmetic unit, 13 Information interface unit,
21 rail potential upper limit data, 22 power device data, 23 train data,
24 timetable data, 25 train operation reflection timetable data, 31 rail potential calculation processing unit,
32 Rail potential upper limit determination processing unit, 33 Rail potential calculation target determination data creation processing unit,
34 Limited rail potential calculation processing unit, 41 Rail potential calculation result data,
42 Limited rail potential calculation result data, 51 Rail potential calculation target condition data,
52 Rail potential calculation target judgment data, 61 Rail potential calculation target source data,
2001-203 stations, 301, 302, 311, 312 trains

Claims (13)

A storage unit that holds the required information,
It is equipped with a calculation unit that executes calculation processing and judgment processing.
The storage unit contains equipment information related to railway power equipment and rails, train information related to the correspondence between the position of trains traveling between stations and the electric power used, timetable information of the train, an upper limit value of rail potential, and the upper limit value is exceeded. Holds information on the permissible duration for the time you want to
The calculation unit calculates the position and power consumption of the train at a set time using the train information and the timetable information, and calculates the rail potential using the calculation result of the position and power consumption of the train and the equipment information. A rail potential calculation device for calculating and determining whether or not the time exceeding the upper limit value of the rail potential exceeds the permissible duration based on the calculation result of the rail potential. The rail potential calculation device according to claim 1.
The rail potential calculation device is characterized in that, when it is determined that the calculation unit exceeds the limit, the calculation unit outputs information for displaying the determination result information. The rail potential calculation device according to claim 2.
The rail potential calculation device, characterized in that the information of the determination result includes at least one of the calculation result of the rail potential, the time exceeding the upper limit value of the rail potential, and the position information of the train. A storage unit that holds the required information,
It is equipped with a calculation unit that executes calculation processing and judgment processing.
The storage unit reflects equipment information related to railway power equipment and rails, train information related to the correspondence between the position of trains traveling between stations and the power used, timetable information of the train, and train operation reflection reflecting the operation change of the train. Timetable information, the first permissible duration that allows the first upper limit of the rail potential and the excess of the first upper limit, and the second upper limit of the rail potential and the second upper limit are allowed to be exceeded. Hold a second permissible duration to
The calculation unit
As the first calculation process, the position and power consumption of the train at the set time are calculated using the train information and the timetable information, and the calculation result of the position and power consumption of the train and the equipment information are used. Calculate the rail potential of 1 and
As the first determination process, a condition in which the time exceeding the first upper limit value exceeds the first allowable duration is determined based on the calculation result of the first rail potential, and the condition is set as a rail potential calculation execution condition. It is held in the storage unit as
As the second calculation process, the position of the train and the power consumption at the set time are calculated using the train information and the train operation reflection timetable information, and the position of the train is obtained only when the rail potential calculation execution condition is satisfied. And the second rail potential is calculated using the calculation result of the power consumption and the equipment information.
As the second determination process, it is determined whether or not the time exceeding the second upper limit value exceeds the second allowable duration based on the calculation result of the second rail potential. Arithmetic logic unit. The rail potential calculation device according to claim 4.
The rail potential calculation device is characterized in that the calculation unit outputs information for displaying the determination result information when it is determined to exceed the determination in the second determination process. The rail potential calculation device according to claim 5.
The information of the determination result includes at least one of the calculation result of the second rail potential, the time exceeding the second upper limit value, and the position information of the train. Computer. The rail potential calculation device according to any one of claims 4 to 6.
The rail potential is characterized in that the first upper limit value of the rail potential is equal to or less than the second upper limit value of the rail potential, and the first allowable duration is equal to or less than the second allowable duration. Computer. The rail potential calculation device according to any one of claims 4 to 7.
The rail potential calculation execution condition includes a range with two different stations as boundaries and the number of the trains existing in the range. The rail potential calculation device according to any one of claims 4 to 7.
The rail potential calculation execution condition is a rail potential calculation device, which includes a difference in time when a plurality of the trains depart from the same station. The rail potential calculation device according to any one of claims 1 to 9.
The equipment information is a rail potential calculation device including the position and capacity of a substation, the electrical resistivity of a wire, and the electrical resistivity of a rail. The rail potential calculation device according to any one of claims 1 to 10.
A rail potential calculation device characterized in that the timetable information managed by the operation management device is used as the timetable information of the train held by the storage unit. The first step of calculating the position and power consumption of the train at the set time using the train information regarding the correspondence between the position of the train traveling between the stations and the power consumption and the timetable information of the train.
The second step of calculating the rail potential using the calculation result of the position of the train and the electric power used and the equipment information about the electric power equipment for railways and the rail, and
A rail potential calculation method including a third step of determining whether or not the time exceeding the upper limit value of the rail potential exceeds the permissible duration for the time exceeding the upper limit value based on the calculation result of the rail potential. The rail potential calculation method according to claim 12.
A rail potential calculation method including a fourth step of displaying information on the result of determination when it is determined to exceed in the third step.

Images