Research On Comprehensive Evaluation Of Railway Dispatching

There is close relation between railway dispatching and operation benefit. From economic point, the pursuit to the efficiency of rail transport is the ultimate goal for an enterprise. The operation benefit is influenced by dispatch decision on the condition of limited transportation resource. Comprehensive estimate system based on benefit mechanism must be established in order to judge level of dispatch accurately. It is very important to determine accurately and to evaluate the quality and level of scheduling decisions for the railway transportation organization.Railway administration scheduling for comprehensive evaluation is a way of object of study. From system point of view, this issue involving the coordination of scheduling decisions, effectiveness, stability and early warning functions is studied in depth by resorts such as qualitative analysis, quantitative methods and data envelopment analysis (DEA).Major reacher works:(1) According to the characteristic and intension of railway administration dispatch, coordinative relation between disparate sorts of dispatch is analysed entirety in view of system science. The close relationship between dispatch and operational effectiveness is illustrated. Key elements of scheduling evaluation and the basic structure of evaluation index system are proposed.(2) For the validity estimate of daily plan of the carriage of the dispatch goods, comparative analysis of characteristics and the scope of application is done. DEA is chosen to conducte a comprehensive and quantitative estimate. The estimate of the weight problem can be solved by solving a fractional programming problem of reference set in this method. And it can effectively solve the deviation problem of artificial empowerment estimate. Meanwhile, DEA as well as the C2R model are discussed in the method. The equivalence relation of the effectiveness of decision making units and Pareto efficient solution and DEA Validity in Multi-objective programming problem are also studied in the method. The relative effectiveness estimate method is constructed on the base of quantitative part of the EDA's decision-making units. It takes operating income as the quantitative output index. It also considers dispatching operation achievements in a separate accounting section and dispatch freight daily program implementation. It is not easy to quantify dispatch decision and some aspects such as coherence of other work, locomotives and rolling stock, the construction skylights co-ordination and effective implementation. Depending on the specific conditions and combing the practical work experience, qualitative analysis judgment is used. An example considering of the actual transport statistics in an estimate period is given.(3) For train operation adjustment of the effectiveness of the estimate, a certain preference information is contained in the operation estimate of the quality of different types train. The preference order of a variety of train operations is given and the DEA estimate model containing the preference information is constructed on the base of the DEA estimate model.(4) Based on the above estimate of both content and method, combination of qualitative and quantitative methods is adopted. A comprehensive estimate methods about the dispatch decision-making advantages and disadvantages and the effectiveness in a certain period is given on the base of a given reference set and estimate index. The estimate methods contain five aspects from the operational situation, operation implementation, operational plans, resource allocation to dispatch decisions with other types of coordination.(5) The stability of dispatch decision-making units is discussed by sensitivity analysis within the scope of range in dispatch input factors. Emerging from the study, a sphere can be constructed. It can ensure that the validity of the decision-making unit can be unchanged when the input factors change in the sphere.(6) Misconducts beyond a certain limit exist in real life. For these misconducts, warning systems in comprehensive estimate system are designed in this thesis. The system can provide decision makers with early warning and decision-making guide with regard to dispatch decisions which can not meet the standard of the effectiveness.Railway administration scheduling for comprehensive evaluation theory system is constructed which involves index system, quantitative evaluation, qualitative evaluation, sensitivity analysis and early warning systems through all above research work. It is looked forward to evaluate and improve the practical work in the scheduling decision-making quality. Early judgments warnings can be given by this system in order to take preventive and corrective measures.