A Reliability Evaluation Method for Electric Bus Network Based on Network Bearing Capacity

Abstract

The invention discloses an electric bus network reliability evaluation method based on network bearing capacity. The method comprises the following steps: (1) constructing an objective function of anupper-layer model based on the maximum total travel volume per hour borne by a system; (2) setting constraint conditions of the upper-layer model as charging station use conditions, road sections andstation capacities; (3) constructing a lower-layer model objective function based on the shortest total travel distance of passengers in the system; (4) setting the lower-layer model to be constrainedby the relationship between the stations and the path flow and the relationship between the road sections and the path flow; and (5) calculating the network bearing capacity under the condition of sudden failure of the charging station, and searching a key road section with overlarge flow saturation increase. According to the method, the maximum travel demand capable of being accommodated by thenetwork is calculated, passenger flow is distributed to the road network according to the shortest path, and the method is constrained by the charging station working condition, the road section and the station capacity. Therefore, measures can be taken in advance for the road sections, and the reliability of the new energy bus system can be quantitatively evaluated.

Description

technical field [0001] The invention relates to the field of public transportation, in particular to a method for evaluating the reliability of an electric public transportation network based on network carrying capacity. Background technique [0002] With the rapid development of the industrial level, the number of automobiles continues to rise, resulting in rapid energy consumption and serious environmental pollution. Electric buses have been widely used because of their good cleanliness and the gradual maturity of technology. In the process of replacing traditional buses with electric buses, ensuring the efficient and reliable operation of the electric bus network is a key issue. The network carrying capacity of the electric bus system is an important indicator to measure the planning of the bus network. It measures whether the system has enough capacity to cope with the continuous urban growing travel demand, and can calculate the flow of each road segment under the cur...

AI Technical Summary

Problems solved by technology

Most of the existing network reliability evaluations are network structure evaluations based on graph theory knowledge. In the evaluation of public transport network reliability, there are few evaluations related to the key network indicators - road traffic

Images