Concept Design of AC and DC Traction Power Supply System (TPS) · 2016. 11. 30. · • 1. AC...

Phongsak Al-Umaree/ MO TPE RE EN

Concept Design of AC and DCTraction Power Supply System

(TPS)

EECON 39 The 39th Electrical Engineering ConferencePhongsak Al-Umaree / 3 November 2016

Unrestricted © Siemens AG 2013 All rights reserved.

xx

Phongsak Al-UmareeHead of Rail Electrification Engineering

(RE EN)

• More than 15 years of professionalexperience in project management of railelectrification projects world-wide

• More than 5 years experience in railelectrification engineering

•• Projects experiences:

– BTS Initial Line– MRTA Initial Blue Line– ARL Airport Rail Link– Singapore Down Town Line– Chennai Metro Line, India

•Contact ; [email protected]

Unrestricted © Siemens AG 2013 All rights reserved. Phongsak Al-Umaree / MO TPE RE EN

• 1. AC Traction Power Supply System DesignConcept

• 2. Typical Power Feeding• Direct feeding• Double feeding

• 3. AC Traction Power Supply Main Equipment• 4. Airport Rail Link Project Overview

• 5. DC Traction Power Supply System Overview• 6. DC Traction Power Supply Main Equipments• 7.Third Rail Overview• 8. Running Rail Overview

• AC-DC Traction Power Supply VDO

Table of Content


Generation

Power plantConverter

Transmission

High voltage gridMedium voltage grid

Distribution

TPS Substation

Traction power supplyIntroduction

2 2

Routing

Contact line

Return circuit

Track


Rail ElectrificationOverview of traction power systems

DC750V,1.5kV,3kV

AC15kV16.7Hz

AC25kV50 Hz


Sitras TPS -Solutions for AC and DC Traction Power Supply

Voltage Frequency DC AC

DC substation 750 V AC substation 25 kV Frequency converter50/16.7 Hz

Autotransformer station2x 25 kV

§ DC substations§ AC substations§ Autotransformer stations§ Frequency converters§ Static Var Compensators§ Active balancers

Sitras traction powersupply systems for everytask

§ Systems made of provenstandard products from thepower utility sector andspecial Sitras products

§ Highly available systems§ Minimized life cycle costs

Features

750 (600) V

1,500 V

3,000 V

15 kV

25 kV

2x 25 kV

16.7 Hz

50/60 Hz

50/60 Hz


Systems DesignComplexity of traction power supply

Traction Power Supply

Standards

§ Local§ International

Electrical safety§ Operators§ Passengers /

pedestrians§ Protect. of installation

Requirements ofpower utilities§ Systems interactions§ Peak loads§ Measurement and

protection

Transportationperformance§ Vehicles§ Timetable

Rail Automation§ Signaling

Geographicrequirements§ Climate§ Topography

Line requirements§ Stations§ Technical buildings§ Tunnels§ Viaducts§ Crossings

Economic efficiency(Lifecycle Costs)§ Investment§ Operation§ Maintenance

Availability

§ Reliable power supply§ Redundancy

Environmentalcompatibility§ Electrical and magnetic

fields§ Noise emissions§ Climate (CO2)

Energy saving


Sitras SIDYTRAC -The Powerful Simulation Tool

§ AC Railways§ DC Railways§ Upstream 3-phase Energy

Supplies§ Overhead Contract Lines

and Return Circuit§ 3rd Rail Systems and Return

Circuit§ 4th Rail Systems

Multi -Train Simulationtool for

Area of Application

Sitrasâ Sidytrac Energy Flow

EMI

Harmonic Analysis

Overall System Design

Energy Demand

Interference, EMC

Safety and Protection

Power Quality

Dimension of Contact Lines,Cables, Transformers, SG

Magnetic Fields, Interference withother Systems, Induced Voltages

Rail Potentials, Stray Currents,Short Circuit, Relay SettingsUnbalance, Voltage Fluctuation,Resonance Behavior

1020

3040

5060

708 5 10

01 2

015

020

050

0

800

5

2

0 2 4 6 8 10-2-4-6-8-10

X [m]

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

-1

-2

-3

-4

-5

Hei

ght[m

]

1

2

5

10

20

50

100

200

500

1000

Mag

netic

Fiel

d[µ

T]

© SIEMENS AG 2012, All rights reserved

Rail Potential

Simulation andCalculation

Train Operations, FeedingConcepts, Network Design

Harmonic current at TSS 1

0,18

3

3,15

0

0,09

1

0,55

2

0,00

5

0,35

1

0,13

1

0,55

2

0,10

3 0,29

8

0,00

4 0,23

2

0,09

4

0,19

8

0,08

3

0,19

8

0,00

1 0,16

5

0

1

1

2

2

3

3

4

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Harmonics Order h

Ivx

(A)


EN50

522

DC-System

AC-System

MastgründungenPole foundations

RückleitungReturn circuit

RückleitungReturn circuit

ViadukteViaducts

FundamenteFoundations

TunnelsegmenteTunnel segments

Ebenerdige StreckenAt-grade lines

BauwerkserdeStructure Earth

UnterwerkSubstation

EN 50122-1

EN 50122-1EN50

522

DC- and AC- Traction Power Systems (TPS)Principle differences Earthing and Bonding


Typical earthing measures forbridges and viaducts

Unrestricted © Siemens AG 2013 All rights reserved.Feb 2016 Phongsak Al-Umaree / MO TPE RE EN

A direct connection to the rails and catenary is made via transformer secondary windings.

Typical Feeding for Conductor and Return Circuit

Direct Feeding

Substation

Contact line

Return circuit

This has the disadvantage of large losses, high touch potentials and stray currents thatinterfere with telecommunications.


Power supply for AC railwaysReturn circuits via running rails

Return circuit via running rails

Return circuits via running rails with return wireCurrent distribution at 50 Hz (16,7

Hz)

1 AC 15 kV/16.7 Hz1 AC 25 kV/50 (60) Hz

Current distribution at 50 Hz and 16,7Hz


AC Traction Substation Main Equipment

Single-line diagram for typical single-phase system


Auto Transformer or Double phase Feeding (2x25 kV)

Typical Feeding for Conductor and Return Circuit

Neg. Feeder

Contact line

Substation Autotransformers

• To improve transmission properties, the 2x25 kV system is used for higher performance.

• Essentially providing a ‘boost’ to the voltage on the OCS and extending the reach of thesubstations.

• This type of feeding is characterized by additional auto-transformer and a return line atpotential of 25 kV. This return line is often designated as a negative feeder.• For this reason, 2-pole switchgear is required in the overhead line network.



Single-line diagram for typical autotransformer system


AC TP Feeding Concept for Main Line



High-voltage switchgear

Air-insulated

Unrestricted © Siemens AG 2013 All rights reserved.Feb 2016


Siemens MV Switchgear

Phongsak Al-Umaree / MO TPE RE EN



MV Switchgear




Control and Protection



Airport Rail Link; Bangkok Thailand

Feb 2016

MEA In-feed 69 kV 3 phases 50 HzOut- feed 25 kV 1 phase 50 HzOverhead Contact LineStandard Gauge 1.435 m.Length 28 km. 160 km/hr8 Passenger Stations1 Depot1 Traction Substation



DC railways

Earthing and bonding

Voltage: 600 V, 750 V, 1500 V, 3 kV


Schematic diagramm

Return current

Stray current

Contact line

Running rails+ + + + + + + + + + + + + + + + +

= insulated

= Area of stray current corrosion+ + + + + + + +

+


DC railways

Stray current path of tunnel systems

Rückstrom / Return Current

Streustrom /Stray Current

FahrleitungContact line

FahschienenRunning rails

BauwerkserdeStructure Earth+ + + + + + + +

+ + + + + + + + + + + + + + + + +

+ + + + + + + +

+

Streustrom /Stray Current= isoliert / insulated

= Bereich der Streustromkorrosion Area of stray current corrosion

+ + + + + + + +


DC railways

Stray current path of viaducts

Rückstrom / Return Current

+ + + + + + + + + + + + + + + + +

+ + + + + + + + + + + +

+ + + + + + + + + + + + + +

+FahrleitungContact line

FahrschienenRunning rails

BauwerkserdeStructure Earth

Streustrom /Stray Current

= isoliert / insulated

= Bereich der Streustromkorrosion Area of stray current corrosion

+ + + + + + + +

StreustromStray Current


DC – Traction Power SystemsStray Currents

Source: Elektrische Bahnen 1-2014 – modivied

Example of stray current corrosion in DC-Systems


Stray Currents

Detraction rate for metals per A and year

First rule of Faraday m = c I t

• Aluminium 2.90 kg 1.08 dm3

• Lead 33.80 kg 3.00 dm3

• Iron 9.13 kg 1.16 dm3

• Copper 10.4 kg 1.17 dm3


Stray Current CorrosionExamples


Example for a DC 750V Metro with conductor rail

DC Traction Power SupplyPrinciple Structure


DC Traction Power System ProtectionGeneral Requirements

Equipment Protection against:• Short circuit currents• Impermissible Overloads

Automatic Disconnection:secure, fast, selective

Considering:• Most unfavourable fault situation

(= smallest short circuit current)• Enlarged feeding sections• Outage of Rectifier Substations• Regenerating trains

(bi-directional load flow)

Source:German recommendation VDV 520

Protection elements for a systemwithout DC bus-feeder CB

MV-CB protects:

• Rectifier transformers• Rectifier• DC-busbar

DC-Line Feeder CBprotects:

• all subsequentequipments of thetraction power supply

• up to vehicles mainCB


§ Medium-voltage switchgear§ Rectifier transformer§ Diode rectifier§ DC switchgear§ Voltage-limiting device§ Short Circuiting Device

DC traction power supplyPrimary / Secondary Main Equipment

Primary equipment Secondary equipment

§ Station control system§ Remote control system (SCADA)§ Combined protective unit and

controller§ Stray-current monitoring system



MV Switchgear



DC traction power supplyRectifier transformer

Cast-resin transformer:GEAFOL®

Oil-insulated transformer:TUNORMA®, TUMETIC®



DC traction power supplyDiode rectifier

Withdrawable diode rectifierSitras® REC-WDiode rectifier Sitras® REC



DC traction power supplyDC switchgear

Compact DC switchgear withintegrated rectifier Sitras® CSG

DC switchgearSitras® DSG



DC Switchgear ( DSG Version2)



DC traction power supplyProtective and control unit

Combined DC-protective unit andcontroller Sitras® PRO

Medium voltage AC-protective unit andcontroller Siprotec



DC traction power supplyVoltage-limiting device

Short-circuiting device Sitras® SCD Compact short-circuiting deviceSitras® SCD-C



Short Circuiting Device



Third Rail Overview

Contact lines for Railways

Conductor RailCatenary

SystemsSingle Wire

Systems

Conductor RailOverheadContact Line

OverheadConductor Rail

Third rail

Fourth rail

Introduction



2. Third Rail Overview

3rd rail

Collector Shoe



2. Third Rail Overview

top contactside contactbottom contact

Third Rail Contact



Third Rail Overview

§ Steel conductor rails § Aluminium-Stainless steelcomposite rail

Type of Third Rail



Third Rail Overview

Third Rail Support



Third Rail Overview

Third Rail – Ramp

3rd rail – ramp



Running Rails Overview

Rail

Two Rails = 1 track

3rd railRunning rails

= Track




The direct fixation fastening




1.4 Railway Gauges

Gauge

1. Broad gauge: 1676, 1668, 1600, 1520 mm2. Standard gauge: 1435 mm3. Meter gauge: 1372, 1067, 1000 mm (Medium gauge)4. Narrow gauge: 914, 762, 760, 610 mm5. Minimum gauge: 381 mm




IRJ (Insulated Rail Joints)



50

Limit speed (km-hr)

16 321

96

160

200

350

250 Intercity

Velaro®

Viaggio®

Desiro®

Combino®, Avenio®,S70, SD 160,Metros

average distance between stops (kms)

ICE® 3

DMU FRAOceanside


Train Type



Thank You For Your Attention

Phongsak Al-UmareeHead of Rail Electrification Engineering

MO TPE RE EN BANGKOK THAILAND

Office : +662 715 4472Mobile: +668 1816 2114

E-mail: [email protected] ID: Phongsak.A


Concept Design of AC and DC Traction Power Supply System (TPS) · 2016. 11. 30. · • 1. AC...

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Transcript of Concept Design of AC and DC Traction Power Supply System (TPS) · 2016. 11. 30. · • 1. AC...