Integrated Optimization on Energy Saving and Quality of Service of Urban Rail Transit System

Table 10

Comparison of energy saving and quality of service between the current timetable and optimized timetables.

	Current timetable		Optimized timetables
			OEST		OQOST
Direction	Up	Down	Up	Down	Up	Down
Overlapping time/s	492.05	502.71	1380.08	1401.14	1114.88	1140.36
Available regenerative braking energy/(kWh)	53.95	52.78	161.72	157.95	128.24	126.26
Average regenerative braking utilization ratio	0.18	0.19	0.46	0.49	0.38	0.40
Total energy consumption/(kWh)	2441.53		2228.55		2292.81
The deviation of trains running time in one circle/s	0		728		0