A method for shortening the effective length of the station to the departure track using CTCS2 and ATO train control systems

Abstract

The present invention relates to a method for shortening the effective length of the station-to-departure track by using the CTCS2 and ATO train control systems. The protection section of the station-to-departure track is moved outward, and the switch from the inner side of the exit signal to the reverse exit signal is set as a continuous approach section as the protection section. A transponder group is set on the station-to-departure track within the platform range. The transponder group is greater than or equal to 0m from the end position of the platform, the distance between the transponder groups is 5m, the distance between the transponder group and the exit signal is not less than 15m, and the distance between the exit signal and the warning mark is not less than 5m. The advantages of the present invention are: under the premise of ensuring driving safety and operating efficiency, the scale of the station is reduced, the investment in engineering construction is reduced, the quality of the construction period is guaranteed, it has great theoretical and practical value, and can achieve good economic and social benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of railway four-electric signal technology, in particular to a method for shortening the effective length from a station to a departure track by adopting a CTCS2 and an ATO train control system. Background Art

[0002] The CTCS2 and ATO train control systems boast interconnected networking and standardization. However, their application in intercity and intra-city rail requires further improvement and enhancement in terms of public transportation, automation, and effective length of arrival and departure lines. Therefore, when CTCS2 and ATO systems are applied to intercity and intra-city rail systems with these characteristics, intermediate stations must be equipped with arrival and departure lines with overtaking capabilities to accommodate the needs of alternating fast and slow trains and skipping. The effective length of a station's arrival and departure line directly impacts station size, train safety, operational efficiency, and project investment.

[0003] Currently, the Urban (Suburban) Railway Design Specifications TB10624-2020 and Intercity Railway Design Specifications TB10623-2014 require that the effective length of the through-station to the departure line for CTCS2 and ATO train control systems should not be less than 400m. Figure 1 shown.

[0004] According to the National Railway Administration's document Guotie Kefa

[2021] No. 24, which partially revised the relevant contents of the "Intercity Railway Design Specifications", the effective length of the through-type station to the departure line for 8-car trains can be adjusted from 400m to 370m. The specific layout is as follows: Figure 2 shown.

[0005] Whether it is the 400m required by the previous specifications or the 370m after the specifications are adjusted, the effective length of the station to the departure line is much longer than the long-term train formation length. The length of the arrival and departure line directly affects the total length of the entire station and the scale of civil engineering. It has a very large impact on the civil engineering volume and land acquisition and demolition volume of stations with passing functions. In addition, due to the increase in the civil engineering volume of the station, the construction period will be extended and the project investment will increase significantly. Summary of the Invention

[0006] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and provide a method for shortening the effective length of the station-to-departure line using the CTCS2 and ATO train control systems. This method comprehensively considers key control factors such as the future train formation length, the installation location of the outbound transponder group, the length of the protection section (including the safety distance), and optimizes the functions of the newly added signal vehicle-mounted ATP, interlocking CBI, train control center TCC, temporary speed limit server TSRS, and other systems and interfaces. While ensuring the safety of train entry and parking and meeting the basic requirements of the line's operating capacity, the method achieves the goal of shortening the effective length of the station-to-departure line by using key technical means of the signal train control system, thus solving the problem of large station scale and high construction cost caused by long arrival and departure lines.

[0007] The purpose of the present invention is achieved by the following technical solutions:

[0008] A method for shortening the effective length of the station-to-departure line by using the CTCS2 and ATO train control systems, characterized in that: the protection section of the station-to-departure line is moved outward, the switch from the inner side of the exit signal to the reverse exit signal is set as a continued approach section as the protection section, and a transponder group is set on the station-to-departure line track within the platform range, the transponder group is greater than or equal to 0m from the end position of the platform, the distance between the transponder groups is 5m, the distance between the transponder group and the exit signal is not less than 15m, and the distance between the exit signal and the warning mark is not less than 5m.

[0009] The train stop information is sent to the station interlocking CBI through the train control center TCC, and the station interlocking CBI sends the continuation route status information to the train control center TCC. The train control center TCC sends an additional continuation route message to the transponder, so that the protection section moves outward to the continuation route section.

[0010] The train control center TCC has added the control and sending function of the special message C58 package of the continued route; the interface function of the train control center TCC includes adding track stop information to the information sent by the temporary speed limit server TSRS to the train control center TCC, adding track stop information to the information sent by the train control center TCC to the interlocking, and adding special messages to the information sent to the LEU.

[0011] After the newly added train of the temporary speed limit server TSRS stops steadily, the unlocking information of the continued route is sent to the train control center TCC function.

[0012] Set the emergency protection distance and safety protection distance from the station to the departure line to completely overlap.

[0013] The unlocking of the protection section is the protection section outside the departure signal of the station departure line. When the train stops and receives zero speed transmission information, and outputs the maximum common braking, traction is cut off, and the end point of the driving permission is withdrawn to the front of the departure signal of the departure line, the protection section is immediately unlocked.

[0014] The safety protection distance of the train's onboard equipment is set to a dynamic protection distance, where the dynamic protection distance refers to a safety protection distance that is dynamically adjusted based on the remaining distance between the train's most recently corrected position and the movement authorization.

[0015] The on-board ATP of the train is optimized to add the function of processing special message packets for continued route; add the function of using the information of the special message packets for continued route to adjust the terminal position of the driving permit after obtaining the special message packets for continued route; add the function of deleting the special message packets for continued route after stopping; add the function of cutting off the traction interface between the train and the vehicle after stopping; add the function of sending the information that the continued route can be unlocked to the TSRS after the train stops.

[0016] The length of the platform is designed based on the future train formation length and the control distance of the train control system for stopping.

[0017] The advantages of this invention are: the effective length of the station to the departure line can be shortened to 260m, which is 140m less than the length of the station to the departure line stipulated before the specification was revised, and 110m less than the length of the station to the departure line after the partial revision of the specification in Document No. 24 of the State Railway Science and Technology Law

[2021] ; on the premise of ensuring driving safety and operation efficiency, the station scale is reduced, the project construction investment is reduced, the quality of the construction period is guaranteed, it has great theoretical and practical value, and can achieve good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the effective length of the existing station to the departure line;

[0019] Figure 2 This is a schematic diagram of the effective length layout of the station to the departure line after the revision of the specifications;

[0020] Figure 3 This is a schematic diagram of the arrangement for shortening the effective length from the station to the departure track in the emergency protection section in the present invention;

[0021] Figure 4 This is a schematic diagram of the effective length arrangement from the station to the departure line when the protection section is moved outward in the present invention;

[0022] Figure 5 This is a schematic diagram of the effective length layout of the station to departure line of the present invention;

[0023] Figure 6 This is a schematic diagram of the signal system and interface function implementation principle of the present invention. DETAILED DESCRIPTION

[0024] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0025] like Figure 1-6 As shown, marks 1-6 in the figure respectively represent: station entrance signal 1, switch 2, station exit signal 3, station arrival and departure line 4, train receiving route 5, and continued route 6.

[0026] Example: Combination Figures 1 to 6 As shown, in this embodiment, the method of shortening the effective length of the station to the departure line by using the CTCS2 and ATO train control system is mainly carried out by optimizing the installation position of the outbound transponder group, designing the length of the protection section including the safety distance, and adding the design of the signal system function. The station to the departure line is designed for intercity railways, urban railways, suburban railways, urban express railways and other fields, and the length of the departure line can be effectively shortened without adding new turnouts, changing the station scale, or increasing the signal system investment. By optimizing the internal functions of the signal system, the interface intersection with the station and track is reduced, which can make the project more smoothly implemented.

[0027] like Figure 1 As shown in the figure, the length of the arrival and departure line of the existing station is as follows: considering the length of the 8-car train body, the station length is 220m; safety protection distance: the safety protection distance of the train control system in the station is 60m. Taking into account a certain error, the balise is set 65m away from the departure signal, and the distance between balise groups is 5m; the distance from the warning mark to the insulation joint is 5m, and a margin of 10m is reserved between the platform end and the insulation joint of the protection section, that is, the effective length of the arrival and departure line = 220m + (5m + 65m + 5m + 5m + 10m) × 2 = 400m.

[0028] like Figure 2 As shown in the figure, the effective length layout diagram of the station arrival and departure line after the revised specifications is shown. The platform length also takes into account the length of the 8-car train body and is set as 220m; the length of the safety protection section of the train control system in the station is 65m, the distance from the warning mark to the insulation joint is 5m, and a margin of 5m is reserved between the platform end and the insulation joint of the protection section, that is, the effective length of the arrival and departure line = 220m + (5m + 65m + 5m) × 2 = 370m.

[0029] like Figure 3As shown, in this embodiment, the distance from the exit signal to the warning mark or switch tip is 5m, and the overrun protection distance is not considered. The overrun protection distance refers to the safety protection distance taken to prevent the dangerous consequences of the train's braking performance being reduced due to the display of the stop signal (including squeeze, side rush, etc.); the safety protection distance and the emergency protection distance (the distance from the exit signal transponder to the dangerous point warning mark) are changed from a non-complete overlap setting to a complete overlap setting. That is, both of the above protection zones are set outside the exit signal, but the emergency protection is considered as limited protection. Referring to the National Railway Science and Technology Law

[2021] No. 24 and factors such as the lateral speed of the 1 / 12 turnout and the platform speed limit, when Vmax = 45km / h, the minimum length of the track circuit in the station is 52m, and the length of the protection section is 52m. At this time, the platform length is 220m, the insulation distance between the protection section and the platform end is 5m, the protection section length is 52m, and the distance between the signal and the warning mark is 5m, that is, the effective length of the departure line = 220m+(5m+52m+5m)×2=344m.

[0030] like Figure 4 As shown, in this embodiment, the protection zone is extended outward to the switch section, considering only the extension of the emergency protection zone for the train approach route. Because the protection zone is located in the switch section inside the exit signal, safety protection is required for this switch. Protection measures include checking that the switch section is free and locking the switch in a certain position until the incoming train has come to a complete stop. Extending the protection zone to the switch section involves a certain sacrifice in operating efficiency, and the protection zone cannot be unlocked until three minutes after the train enters the track.

[0031] At this time, the platform length is 220m, the balise is 0m away from the platform end, the distance between balise groups is 5m, the distance between the balise and the exit signal is 25m, and the distance between the signal and the warning mark is 5m. That is, the effective length from the station to the departure line is 220m+(5m+25m+5m)×2=290m.

[0032] like Figure 5 As shown, in this embodiment, when the protection zone is moved outward, it becomes the approach section extending inward from the exit signal, and a precise positioning transponder set is installed within the track platform. In this case, the platform can be shortened to 210m in length, with the transponder 0m from the platform end, the distance between transponder sets 5m, the distance between the transponder and the exit signal 15m, and the distance between the signal and the warning beacon 5m.

[0033] That is, the effective length of the arrival and departure line = 210m + (0m + 5m + 15m + 5m) × 2 = 260m. Compared with the 400m effective length before the design specification revision, the station length is shortened by 140m; compared with the 370m effective length after the revision, the overall station length is shortened by 110m.

[0034] In addition to designing the effective length of the arrival and departure line based on control factors such as the long-term train formation length, the installation position of the outbound balise group, and the length of the protection section (including the safety distance), this embodiment also adds and optimizes systems such as the signal vehicle ATP, interlocking CBI, train control center TCC, temporary speed limit server TSRS, and related interface functions to further meet the goal of shortening the station arrival and departure line, while also further ensuring the efficiency and safety of train operations on the shortened station arrival and departure line.

[0035] like Figure 6 As shown, the train's onboard equipment receives driving permission information from the ZPW-2000 track circuit in real time via the TCR's onboard ATP antenna. When the train passes transponders at station entrances and exits, or at the entrances to section blocks, such as entry signal 1 or exit signal 3, the train receives relevant information from the transponders via its BTM antenna, obtaining fixed and variable driving information such as line parameters and driving permission. The train then proceeds to arrival and departure track 4 via the connecting route 5 and completes a braking curve. The train's stop information is transmitted to the temporary speed limit server TSRS via the LTE-M wireless network. The TSRS forwards this information to the train control center (TCC), which implements the platform door and train door linkage function. The TCC forwards this information to the station interlocking control (CBI), which unlocks the continued route 6. After the route is unlocked, the station interlocking control (CBI) sends the continued route unlock status to the TCC. In the above information flow, the key technology of this embodiment is the newly added train control center TCC sending train stop information to the station interlocking CBI, the station interlocking CBI sends the continuation route status information to the train control center TCC, and the train control center TCC adds sending continuation route messages to the active transponder.

[0036] During the specific implementation of this embodiment: the method of this embodiment includes: station to departure line, CTCS2 and ATO train control system, platform length, installation position of exit transponder group, emergency protection distance, overrun protection distance, outward shift of protection section, unlocking of extended protection section, on-board equipment safety protection distance, on-board ATP function optimization, interlocking CBI function optimization, train control center TCC function optimization, temporary speed limit server TSRS function optimization; the effective length of the station to departure line includes the platform length, protection section distance, and the distance from the warning mark to the exit signal that meet the long-term train formation.

[0037] This embodiment is applicable to intercity, urban, suburban, and urban express rail systems that utilize the CTCS2 and ATO train control systems. This CTCS2 and ATO train control system builds upon the CTCS-2 train control system technology by adding features such as automatic ATO reentry, automatic station departure, automatic interval operation, automatic station parking, automatic door opening (protection), door / platform door linkage control, and energy-saving train operation control.

[0038] The arrival and departure line is the track side line and main line with the function of train reception and departure operations. The platform length is composed of the long-term train formation length and the precise control distance of the train control system's parking.

[0039] The distance between the outbound transponder group and the outbound signal should be no less than 15m, and the distance between the installation position of the passive transponder close to the platform and the end of the platform should be greater than or equal to 0m.

[0040] The exit signal is set at a distance of no less than 5m from the warning mark.

[0041] The protection section is extended outward from the inside of the exit signal to the switch section of the reverse exit signal to handle the extension of the train receiving route protection section, including checking that the switch section is idle, locking the switch in the fixed or reverse position, and closing the reverse entry signal until the incoming train stops steadily on the platform.

[0042] The extended protection section unlocking is the protection section outside the departure line exit signal. After the train stops and receives zero speed transmission information, outputs maximum common braking, traction is cut off, and the end point of the driving permit is withdrawn to the front of the departure line exit signal, the protection section is unlocked immediately.

[0043] The safety protection distance of on-board equipment has been changed from a fixed protection distance to a dynamic protection distance, that is, the safety protection distance is dynamically adjusted according to the remaining distance between the train's most recently corrected position and the movement authorization. This is used to solve the problem that the retraction of the on-board equipment movement authorization will trigger braking when the C58 package is invalid.

[0044] The optimization of on-board ATP functions includes the addition of a special message package processing function for the continued route; a new function for using the information of the special message package for the continued route to adjust the terminal position of the driving permit after obtaining it; a new function for deleting the special message package for the continued route after parking; a new function for the traction cut-off interface between the train and the vehicle after parking; and a new function for sending a message to the TSRS that the continued route can be unlocked after the train stops.

[0045] The optimization of the interlocking CBI function includes receiving the information from the TCC that the continued route can be unlocked when the train stops; and transmitting the continued route status information to the TCC, including the continued route locking status and unlocking status.

[0046] The optimization of the TCC function of the train control center includes the control and sending function of the special message C58 package for the continued route; the optimization of the TCC interface function of the train control center includes the addition of track stop information to the information sent by TSRS to TCC, the addition of track stop information to the information sent by TCC to interlocking, and the addition of special messages to the information sent to LEU.

[0047] The optimization of the temporary speed limit server TSRS function includes adding a function that sends the unlocking information of the continued route to the train control center TCC after the train stops.

[0048] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A method for shortening the effective length of a station to a departure track using the CTCS2 and ATO train control systems, characterized by: Move the protection section from the station to the departure track outward, and set the switch from the inner side of the departure signal to the reverse departure signal as the continued approach section as the protection section. Set a transponder group on the station to the departure track within the platform range. The transponder group is 0m away from the end of the platform, the distance between the transponder groups is 5m, the distance between the transponder group and the departure signal is 15m, and the distance between the departure signal and the warning mark is 5m. The effective length of the departure track is 260m. The train control center TCC sends a train stop information to the station interlocking CBI, and the station interlocking CBI sends the continuation route status information to the train control center TCC. The train control center TCC sends an additional continuation route message to the transponder, so that the protection section moves outward to become the continuation route section. The train control center (TCC) has been newly equipped with the control and transmission function of the special message C58 package for the route continuation. The interface functions of the train control center (TCC) include adding track stop information to the information sent by the temporary speed limit server (TSRS) to the train control center (TCC), adding track stop information to the information sent by the train control center (TCC) to the interlocking, and adding special messages to the information sent to the LEU. After the newly added train of the temporary speed limit server TSRS stops steadily, the unlocking information of the continued route is sent to the train control center TCC function; The unlocking of the protection section is the protection section outside the departure signal of the station's departure line. When the train stops and receives zero speed transmission information, outputs the maximum service brake, cuts off traction, and withdraws the end of the driving permission to the front of the departure signal of the departure line, the protection section is immediately unlocked; The safety protection distance of the train's onboard equipment is set to a dynamic protection distance, where the dynamic protection distance is a safety protection distance that is dynamically adjusted based on the remaining distance between the train's most recently corrected position and the movement authorization; The on-board ATP of the train is optimized to add the function of processing special message packets for continued route; add the function of using the information of the special message packets for continued route to adjust the terminal position of the driving permit after obtaining the special message packets for continued route; add the function of deleting the special message packets for continued route after stopping; add the function of cutting off the traction interface between the train and the vehicle after stopping; add the function of sending the information that the continued route can be unlocked to the TSRS after the train stops.

2. The method of shortening the effective length of the station to the departure track using the CTCS2 and ATO train control systems according to claim 1, characterized in that: Set the emergency protection distance and safety protection distance from the station to the departure line to completely overlap.

3. The method of shortening the effective length of the station to the departure track using the CTCS2 and ATO train control systems according to claim 1, characterized in that: The length of the platform is designed based on the future train formation length and the control distance of the train control system for stopping.

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