Jun 20, 2015
Evaluation of Electrical Energy Requirements
For Tehran-Mashad High Speed Rail
Mojtaba Noroozian MENA Rail & Metro Summit 2014
CONTENTS
Introduction
Tehran-Mashad Electrical Railway General Information
Electrical Railway Structure
Methodology of Study
TPS numbers, Ratings and locations
Energy Requirements
INTRODUCTION
INTRODUCTION
GENERAL DATA
Electrification system, 25 kV / 50 Hz
Track length: 926 km, Double-tracked system
Headway:
10 minutes for passengers trains
20 minutes for freight trains
Maximum Speed
200 km/hours for passengers trains
100 km/hours for freight trains
Number of Passenger Stations: 18
ROLLING STOCK DATA
Passenger trains
2 BoBo locomotives, 15 Wagons, 90 tons, 6.4 MVA
Freight trains
2 CoCo locomotives, 150 tons, 7.5 MVA
OVERHEAD CATENARY SYSTEM (OCS)
STUDY METHODOLOGY
Train Formula (Speed, mass, route)
Current and power characteristic of trains
Current intake of each train
Modelling of trains as an electrical load
Voltage profile under different scenarios
STUDY OUPUTS
Power requirements for the worst cases
Size of TPS (Traction Power Supply)
Rating of transformer Station power
Rating of autotransformer
Current in overhead catenary
Voltage Unbalance
STUDY METHODOLOGY
The studies must include the impact of the external network with sufficient precision.
TPS STUDY
Distance between Traction Substations
Power Capacity of Traction Substations
To consider:
Various operating scenarios
Passenger and freight trains trafic
Normal Condition
Emergency Conditions
RESULT OF TPS STUDY
For simple system
17 TSS
60 km distance
2 x 30 or 2x40 MW
TSS POWER CAPACITIES
For autotransformer scheme
12 TSS
80 km distance
2 x 40 or 2x50 MW
TOTAL AVERAGE POWER
SUPPLY OF ELECTRICAL POWER DEMAND
TSS TSS TSS TSS
FSS FSS FSS
Alternative 1:
SUPPLY OF ELECTRICAL POWER DEMAND
Alternative 2:
DG
TSS TSS TSS TSS
FSS FSS FSS
DG DG DG
SUPPLY OF ELECTRICAL POWER DEMAND
Alternative 3:
TSS TSS TSS TSS
FSS FSS FSS
PP PP
SUPPLY OF ELECTRICAL POWER DEMAND
Alternative 4:
TSS TSS TSS TSS
FSS FSS FSS
PP PP
DG DG
FURTHER STUDIES
Reactive power study
Power quality studies
EMF Studies
..
CONCLUSIONS
A systematic approach for a typical high speed train study was
demonstrated.
The general data for the system study was discussed.
Number of traction substations and distances were studied.
Some Alternatives for supply of energy to the railway system
were examined.
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