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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