Study on High-speed Railway Train Scheduling Based on Integration of Management and Control

Transcription

1 Applied Mechanics and Materials Submitted: ISSN: , Vol. 667, pp Accepted: doi: / Online: Trans Tech Publications, Switzerland Study on High-speed Railway Train Scheduling Based on Integration of Management and Control Mo Gao 1, a, Leishan Zhou 2,b, Yu Zhou 3,c 1 Beijing Jiaotong University, Haidian District, Beijing,China Beijing Jiaotong University, Haidian District, Beijing,China Beijing Jiaotong University, Haidian District, Beijing,China a @bjtu.edu.cn, b lshzhou@bjtu.edu.cn, c @bjtu.edu.cn Keywords: Integration of management and control, high-speed railway, organization of train operation Abstract. This paper analyzes the command mode of high speed railway (HSR) train dispatching based on control system CTCS-3.In order to draw up the optimum allocation plan of time and space resources for HSR, a basic concept of management and control integration was proposed in this paper, including the HSR train coordination scheduling, the structure of hardware and software, and the theory of train operation. Furthermore, the basic framework of train operation dispatching command system based on the integration of management and control was designed to optimize the HSR operation and organization. Introduction Train scheduling problem is research hotspot and difficult points of transportation organization theory, since the centralized traffic control system that put into use at present is CTCS-2 and its one-way network distrbution of information transfer, it s diffucult to manage communicaion and coordination. Cause of the lack of function of correspond of data and real-time information, CTCS-3 system is demonded to meet the needs of modern railway s technology incorporation between communication and signal, CTCS-3 has become an important direction of railway s dedicated moble communicatoin and train control system, and this system will ensure the safety, high speed and high efficiency of train schdeuling. Both hardware and software structural models of CTCS-3 system are described in this paper. This paper points out that the most important taches of collaborative high-speed railway train scheduling are organizational planning and operational control. Organizational planning is the basic and substratum of train schdueling, while operatonal control collects real-time operation data and sends back to information flow upstream. To meet the need of networked collaborative high-speed train scheduling based on control system CTCS-3, the paper preliminary designs a brief process of train dispatching system which will optimize and adjust the train working diagram, in that case train dispatch system will achieve a more excellent working result. Hardware and Software structural models (1) Software structural model 1Engineering philosophy and working pattern of CTCS-3 CTCS-3 train control system should meet the needs of running under the rule of utomatic block multi-train tracking in forward direction, while running by rule of standing between blocks in reverse direction. It should also be functional running cross lines. Equipments of CTCS-3 system are adopted to the pattern of object-distance continuous speed control, and monitor the safey of running train by taking braking appliance in a priority. At the same time, GSM-R wireless communication has covered most of national stations, centralized controled by RBC equipments. All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of Trans Tech Publications, (ID: , Pennsylvania State University, University Park, USA-09/05/16,11:34:33)

2 82 Advances in Computers, Electronics and Mechatronics Equiped with ETCS-2 and combined with CTCS-2, high-speed train section and rail links should trigger the emergency braking, feedback operation information to trains with CTCS-3 system by RBC. Nine working patterns are taken in CTCS-3 train control system. On-board units generate mode object-distance continuous speed curve in order to monitor the safe operation of trains, in the meanwhile basic data such as movement authority and line data is collected and analyzed. Train dispatchers deal with the data of train running speed, permissible velocity, target velocity and object distance through DMI system. 2 Sofeware equipment and function description Distributed structure is used in CTCS-3 software equipments distribution. MVB bus mode plays the role of connector between on-board equipment and EMU. The main functions of CTCS-3 are as blow: core-controled logic calculation in both C2 units and C3 units; information unified exprtation and admin tasks through DMI human-computer interface module; movement authority receiving by TCR unit which linked to C2 on-board control units. (2) Hardware structural model 1 CTCS-3 hardware structure set As the command center of national railway system, dispatching and directing center manage to control nation railway system broadly, properly allocate transportation resources, coordinate cooperation between high-speed lines and existing lines. Dispatching and directing center also hold the right to command the dispatching offices, and schedule train operation directly. Dispatching offices, as the midstream of information flow, have the obligation to schdule high-speed train operaton, arrange the deployment of transportation capacity resources within jurisdiction, take charge of daily production, master specific trains operation information, and coordinate with other units with emergency operation scheme if it s necessasary. Downstream units, such as stations, power control stations, EMU maintenance base, train crew base, are operating following the lead of dispatching and directing center, in the meanwhile send operation data back to center. In this way, CTCS-3 system ensures the safety producton of high-speed railway transportation. 2 Dispatching desk set of CTCS-3 hardware system The principle of distribution of dispatching dest set is overall consideration of quantities of stations, train density, EMU maintenance base, equipment level, power supply facilities, degree of information technology, etc. Meanwhile, Dispatching desk distribution should also take the amount of work of train dispatchers under both normal and particular circumstances. Content of high-speed railway organization theoretical system (1) Overall framework of railway organization based on integration of management and control The information stream of high-speed railway schedule begins from train organization plan all the way to assurance of optimized train plan. In order to get a clear division of each step, an overall framework should be structured to guide railway organization planning. Such overall framework of railway organization should be built on the basis of transportation demand analysis, basic transportation equipment distribution plan which includes regular and seasonal train operation, and volumes forecasting. General framework should take EMU scheduling and train crew plan into account, as well as constructions and maintenance under certain circumstances. In consideration of two-way information transmission, the framework of railway organization should fit the intent of collecting on-board operation information, sending back to dispatching and directing center and adjusting organization schedule according in real time. Thus the framework will take control of the whole high-speed railway organization and optimize itself dynamically, improve the coordination between existing railway organization and actual operation situation. Networked collaborative high-speed railway organization overall framework is shown in Fig 1.

3 Applied Mechanics and Materials Vol Fig. 1 High-speed railway organization overall framework Organization plan generation includes at least four main content: scheduling basic train diagram according to transportation demand plan; planning EMU scheduling and crew management module adopted to train diagram and prediction useage of trains; adjusting train scheduling on the basis of change of season and the need of engineering construction; assorting and organizing daily implementation plan. Order Releasing module takes charge of deliverying railway operation plan to each subsystem. Control exection module is responsible for train operation control which is composed by adjusting dysfunctional tains, planning predict performance train operation diagram, and modifying EMU operation play if it s necessary; control exection also includes train route control and conveying on-board train information. Subesequent modules are information feedback, train scheduling optimization and adjustment, security assurance of optimized train scheduling which requires safety evaluation and management. (2) Basic content of railway organization High-speed railway organization s basic components are as: train scheduling generation; plan order releasing; control execution which includes train operation adjustment, route following control, train information communication; on-board data feedback; scheduling adapting; safety assurance. (3) Management and control process of train scheduling Subsystems of high-speed railway scheduling are train operation; EMU routing management; train allocation; station operation; crew plan; comprehensive maintenance. Train operation plan deals with operation scheme. EMU routing management subsystem takes charge of generaing usage plan of EMU sets to achieve maximum efficiency. Train allocation manages distribution of trains. Station operation creats route plan, collects operation imformation at station and sends it to dispatching desk. Crew plan gives a general scheduling for train crew. Comprehensive maintenance puts safey of train scheduling first, designs proper maintenance plan for EMU sets. Each subsystem is described in Fig 2.

4 84 Advances in Computers, Electronics and Mechatronics Fig. 2 Subsystems and process of train scheduling (4) Operating mechanism of railway organization based on integration of management and control Cause of two-way transmission of information, dispatching desks are able to schedule the train operation, and to recompose plans of EMU route. The on-board data is sent back to dispatching and directing center, then adjustment plans are created. The adjustment action that terminal trains have taken complete the process of networked coordination control of high-speed railway. Conclusion HSR train operation and organization is the key in HSR operation, it is necessary to put CTCS-3 train control system into practice on collaborative high-speed railway scheduling system. This paper designs both hardware and software structural models of CTCS-3 to accomplish two-way realtime information communication. Brief process of train dispatching system was designed to optimize the train working diagram. In this way, high-speed railway train operation system will be able to adjust and optimize itself. Acknowledgement This work has been supported by Major Project of China Railway Corporation (T14D00121). References [1] Yuan Cao, Baigen Cai, Tao Tang, Jiancheng Mu. Reliability Analysis of CTCS Based on two GSM-R Double Layers Networks Structures [J]. Communications and Mobile Computing, Volume 3, Jan 2009, Page(s): [2] Xuesheng Ji,Tao Tang. The Study of Train Operation Control System Testing Platform based on CTCS-3 [J].Railway Signalling and Communication, Volume 43, July 2007, Page(s):1-3. [3] Qiyuan Peng, Chao Wen, Jian Luo. Dispatching Scheme for High Speed Passenger Lines in China [J]. Journal of Southwest Jiaotong University, Volume 41,Oct 2006, Page(s):

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