IEEE Traction Power Subcommittee for Rail Transit Meeting

March 25th & 26th, 2015

Joint Rail Conference and Valley Transportation AuthoritySAN JOSE CALIFORNIA, USA

Ramesh Dhingra, P.E.

Systems Design Manager

Valley Transportation Authority

San Jose, CA

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VTA-LRT YARD SUBSTATION 3 MW UNIT

Photos

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VTA-LRT YARD SUBSTATION 3 MW UNIT

Photos

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VTA’s Silicon Valley Berryessa Extension

(BART Systems) Project

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What are BART Systems?

Traction Power

Delivery of Power to the Trains

Automatic Train Control

Train Operator / Protection

Speed Control Mechanism

Communications

Telephones, CCTV, Revenue Collection, etc.

Train Status to Patrons/Central Control

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SVBX Traction Power System

Overview

3 High Voltage SubstationsWSX SVRT

To PG&E115 kV Line

HVS SRC

HVS SMR

SWS SWA SKR SRR SME SHO

SBE

To PG&E115 kV Line

34.5 kV Subtransmission

1000 V DC

6 Traction Power Substations

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SVBX Traction Power Components

2 High Voltage Substation

6 Traction Power Substations– Transformer-Rectifier units step down to 1000 V dc

– 34.5 kV, 1000 V dc Breakers

– DC Cables feed 1000 V dc Contract Rail

– Running Rail serves as the return

Contact Rail (3rd Rail) provides power to BART

SVBX Traction Power System Modeling

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SVBX Train Control Overview

TRAIN CONTROL HOUSE

WARM

SPRINGS

S20

S24

S25

S26

S27

S28

MILPITAS

S37

S40

S44 BERRYESSA

S50

SVBX

EXTENSION

WARM SPRINGS

EXTENSION

TRAIN CONTROL ROOM

CROSSOVERTRAIN CONTROL HOUSE ~3000 sqft

S55S45

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Automatic Train Control Blocks

S23

S2

S1

S25

B

C

SL10SL2 SL3 SL4 SL5 SL6 SL7 SL8 SL9 SL1 SL2 SL3 SL4SL1

S26S24S24S20

SR2 SR3 SR4 SR5 SR6 SR7 SR8 SR9SR1 SR10 SR1 SL2 SR3 SR4

PA

D

R

SL17SL15

V

T

SL18SR16

SW223

SW123

SL16

H

SR17 SW127

SW227

F

G

B

TM2TZP ZONE TZB ZONE

TZC ZONETZV ZONE

TM1

SVRT

EXTENSION

WARM SPRINGS

EXTENSION

SIGNALS FROM S20 TO S24

GATE/SIGNALS A, B, D, H, P, R, T, V

SWITCHES SW23

TRAFFIC TZA, TZD

TRACK CIRCUITS SL15, SL16, SL17

SR16, SR17, SR18

FUNCTIONAL INTERFACE TRAIN CONTROL SVRT/WSX

SIGNALS FROM S24 TO S20

TRACK CIRCUITS SL1, SL2, SL3, SL4, SL5, SL6, SL7, SL8, SL9, SL10

SR1, SR2, SR3, SR4, SR5, SR6, SR7, SR8, SR9, SR10

SIGNALS FROM S26 TO S20

GATE/SIGNALS B, C F, G

SWITCHES SW27

TRAFFIC TZB, TZC

TRACK CIRCUITS SL1, SL2, SL3, SL4

SR1, SR2, SR3 SR4

SVRTWSX

S23 S25

TRACK CIRCUITS (BLOCKS)

- Length varies by location, 40-1100 feet.

- Current Track Circuits

• Use both rails in a current loop

• Delimited by current shunts

- Voltage Track Circuits

• Use a single track and return conductor

• Delimited by insulated joints

Simple Track Circuit Operation

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Simple Track Circuit Operation

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ATC Speed Control

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Speed Control

- Signals carried through rails at Hundreds of mA

- 4 Audio Frequency pairs between 5 and 10 kHz

- 8 speed codes: 0, 6, 18, 27, 36, 50, 70, 80 Mph

Trackside Train Control Equipment

Track Circuits

Signal Switch Machine

Track Bumper for the What if…

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Communication Systems - BARTnet

DataIntrusion Detection

Ventilation Control Panel

Emergency Backup Panel

Yard Emergency Trips

Train Control

Platform Trip Stations

Elevator Monitoring

Blue Light Stations

SCADA

AudioPBX Telephones

Emergency Telephones

Radio System Expansion

Fire Telephones

Public Address

VideoClosed Circuit

Television

Portal Intrusion

Detection

Railroad Intrusion

Detection

BARTnet

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Network Elements

BARTnet (Fiber Backbone)

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S24 S28 S44

S26 S40 S50

144 SM Fiber

TO OCC

TO OCC

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BART SVBX Systems Cables

Intrusion Detection

(7 miles)

Train Control and

Communications Cabling

(110 miles)

UPRR

1000V DC Cables

(30 miles)

34.5 kV Cables

(80 miles)

Fiber Optic Cables

(130 miles)

Total Cable Quantity = 350 Miles