ieee traction power subcommittee for rail transit meeting ... · joint rail conference and valley...
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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
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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
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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
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
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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 Cable Quantity = 350 Miles