Research Article

Optimal Electric Bus Scheduling under Travel Time Uncertainty: A Robust Model and Solution Method

Table 1

Definitions of the sets and parameters for the R-MD-EVSP model.

Sets

Set of depots with index
Set of trip nodes
Set of nodes
Set of arcs
Parameters
Earliest operation start time
Latest operation end time
Scheduled departure time of trip node
Latest departure time of trip node
Trip time of trip node , an uncertain parameter
Nominal trip time of trip node
Upper trip time deviation from
Lower trip time deviation from
Trip time deviation of trip node ,
Trip energy consumption of trip node , an uncertain parameter
Nominal energy consumption of trip node
Upper energy consumption deviation from
Lower energy consumption deviation from
Energy consumption deviation of trip node ,
Empty travel time from node to node
Energy consumption of the empty travel from node to node
Cost of arc
Departure delay cost per minute
Unit charging cost
Charging preparation time
Energy charging rate
Energy consumption rate
Uncertainty budget, maximum number of trips that can take their upper bound trip time, indexed by
Upper bound of the vehicle battery SoC
Lower bound of the vehicle battery SoC
Lower bound of variable ,