March 25th & 26th, 2015 Joint Rail Conference and Valley - - PowerPoint PPT Presentation

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March 25th & 26th, 2015 Joint Rail Conference and Valley - - PowerPoint PPT Presentation

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1 IEEE Traction Power Subcommittee for Rail Transit Meeting March 25th & 26th, 2015 Joint Rail Conference and Valley Transportation Authority SAN JOSE CALIFORNIA, USA Ramesh Dhingra, P.E. Systems Design Manager Valley Transportation

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IEEE Traction Power Subcommittee for Rail Transit Meeting March 25th & 26th, 2015 Joint Rail Conference and Valley Transportation Authority

SAN 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 Substations

WSX SVRT To PG&E 115 kV Line HVS SRC HVS SMR SWS SWA SKR SRR SME SHO SBE

To PG&E 115 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

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SVBX Traction Power System Modeling

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SV SVBX BX Tr Trai ain n Co Cont ntro rol l Ov Over ervie view

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

CROSSOVER TRAIN CONTROL HOUSE ~3000 sqft

S55 S45

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Automatic Train Control Blocks

S23 S2 S1 S25

B C

SL10 SL2 SL3 SL4 SL5 SL6 SL7 SL8 SL9 SL1 SL2 SL3 SL4 SL1

S26 S24 S24 S20

SR2 SR3 SR4 SR5 SR6 SR7 SR8 SR9 SR1 SR10 SR1 SL2 SR3 SR4

P

A D R

SL17 SL15

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T

SL18 SR16 SW223 SW123 SL16

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SR17 SW127 SW227

F G B

TM2 TZP ZONE TZB ZONE TZC ZONE TZV ZONE TM1

SVRT WSX

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
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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
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Trackside Train Control Equipment

Track Circuits Signal Switch Machine

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Track Bumper for the What if…

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Communication Systems - BARTnet

Data

Intrusion Detection Ventilation Control Panel Emergency Backup Panel Yard Emergency Trips Train Control Platform Trip Stations Elevator Monitoring Blue Light Stations SCADA

Audio

PBX Telephones Emergency Telephones Radio System Expansion Fire Telephones Public Address

Video

Closed Circuit Television Portal Intrusion Detection Railroad Intrusion Detection

BARTnet

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Network Elements

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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 al Cable ble Quant antity ty = 3 350 0 Miles es