High-megawatt Electric Drive Applications in Oil & Gas
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1 Richard Zhang – GE Oil & Gas Email: [email protected] High-megawatt Electric Drive Applications in Oil & Gas Workshop on Future Large CO2 Compression Systems March 31, 2009 Richard Zhang GE Oil & Gas
Transcript of High-megawatt Electric Drive Applications in Oil & Gas
1Richard Zhang – GE Oil & Gas Email: [email protected]
High-megawatt Electric Drive
Applications in Oil & Gas
Workshop on Future Large CO2 Compression Systems
March 31, 2009
Richard Zhang
GE Oil & Gas
2Richard Zhang – GE Oil & Gas Email: [email protected]
Oil & Gas Applications for Turbo Machinery
ProcessingProcessingProcessingTransportTransportTransportExploration ProductionExploration Exploration ProductionProduction
3Richard Zhang – GE Oil & Gas Email: [email protected]
FR7E
A 3MCL1405 BCL8043MCL1405 BCL804
FR5
A Typical Conventional Compression Train
•Gas Turbine + Compressor
•Fixed low speed operation
•Efficiency/emission limit
•Maintenance cycle
•Gas Turbine + Compressor
•Fixed low speed operation
•Efficiency/emission limit
•Maintenance cycle
4Richard Zhang – GE Oil & Gas Email: [email protected]
A Changing World …
Demographics & industrialization Limited resources
Supply / demand disconnects Spare capacity
Elevated cost of energyUnconventional energy sources
Increasing environmental regulations Reduced emissions
Higher investor / stakeholder expectations Cost control
ChallengesScenario
World Is Going More ElectricPower Generation & Distribution
Thermal, Nuclear
• Synchronous
• Mechanical/Electromagnetic Conversion
• Centralized grid
50/60 Hz AC
Renewables
• Asynchronous
• Electronic Energy Conversion
• Mini and distributed grid
Variable speed
DC
Constant speed
6Richard Zhang – GE Oil & Gas Email: [email protected]
World is Going More Electric –Prime Mover
More Electric or All Electric Prime Movers More Electric or All Electric Prime Movers
Oil & GasOil & GasElectrification Electrification
World Largest LNG Train from GE (8 MTPY) tested in Massa, Italy
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LNG trains: MS9/7001+EM+CC
Full electric Trains
EM
MCL1402
FR9EEM
3MCL1403MCL1402
FR9EEM
3MCL1403MCL1402
FR9EFR9EFR9
EMEM
3MCL1403
FR7EA
EM
3MCL1405 BCL804
EM3MCL1405 BCL804
FR7
Electric Drives in High Power Compressor Trains
• High power > 10 MW
• High reliability
• High performance
- low torque ripple
- low grid harmonics
Needs & Challenges
HS Electric-driven Trains
EM
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Very High Power to UltraVery High Power to Ultra--High Power Drives: High Power Drives:
LNG/eLNG/e--LNG exampleLNG example LNG Super TrainLNG Super Train
(Gas turbine driven w/ electric (Gas turbine driven w/ electric drive)drive)
GT M/G C C
LNG LNG (Gas Turbine Driven(Gas Turbine Driven ))
•• Higher Availability Higher Availability
•• Higher Power Higher Power
•• High Power QualityHigh Power Quality
•• Lower Emission Lower Emission
•• Higher EfficiencyHigher Efficiency
ee--LNGLNG
(Electric driven)(Electric driven)
MC C MC C
GT GGT G
GT GST G
GT C C
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ChallengesChallenges SolutionSolutions
• High power 35MW @ 100Hz > Multi-thread parallel
• Low torque ripple > Interleaving control
• High reliability > Less parts-count & proven
building block
High Power High Performance Drive Example
High Reliability - High Quality Waveform
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35 MW Drive System Test Results at GE Oil & Gas
Massa Testbed, Italy
Inverter Currents
Motor Current
High waveform quality and less complexity
35 MW, 110 Hz capability
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Performance Comparison with LCI
Motor Mechanical Torque Ripple (steady state)LCI
Torque Ripple reduced by more than 3x
82000
84000
86000
88000
90000
92000
94000
96000
98000
0 5 10 15 20 25
Time [s]
Torq
ue [N
m]
IGCT Drive System
Torque Ripple: 3,7% @ 30MW 3300rpm
Torque Ripple: 14.8% @ 31MW 3400rpm
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CC
GAS TURBINE
CC
ELECTRIC MOTOR
VFD
• NO GEARBOX
• INCREASED RELIABILITY
• LOWER MAINTENAINCE COSTS
UEL GAS
ELECTRIC POWER
4000-18000RPM
High Speed High Power Direct Drive Compression
High Power High Speed/Freq. Reliable Solutions
0
5
10
15
20
25
30
35
40
0 200 400 600 800 1000
Freq (Hz)
Pow
er (M
W) Existing Technologies
.
Unmet NeedsNew Frontier
0
5
10
15
20
25
30
35
40
0 200 400 600 800 1000
Freq (Hz)
Pow
er (M
W) Existing Technologies
.
Unmet NeedsNew Frontier
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Integrated Compressor Line :Simple to install
Easy to operateEnvironmentally friendly
Applications
• Transportation• Pipeliners• Storage
• Natural Gas• Sales Gas• Export• Dry Clean Gas Services
• Downstream• Feed Gas • Fuel Gas Boosters
• Integrated high speed motor-compressor
• Serve the O&G segments up to 15 MW
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Subsea Trees
PLET
Subsea Distribution Unit
MainUmbilical
DualFlowlines
SubseaManifolds
FlowlineJumper
MainControl Umbilical
BranchCDU
Subsea Processing
Pumping
Subsea Trees
• Long Stepout
• Deeper waters
• Increased power
• Multiple loads
Future Demands/Technologies:
Subsea ... Next Frontier
Reliability … Availability
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High Power Electric Drives for Oil & Gas Applications
Small Pipeline& Storage
Pow
er R
ati n
g
System Speed
LNG
Large PipelineRe-injection
L H
L
H
Subsea
Small Pipeline& Storage
Pow
er R
ati n
g
System Speed
LNG
Large PipelineRe-injection
L H
L
H
Subsea
Pow
er R
ati n
g
System Speed
LNG
Large PipelineRe-injection
L H
L
H
Subsea
17Richard Zhang – GE Oil & Gas Email: [email protected]
World is going More Electric … happening in Oil & Gas industry too
Diverse range of applications for high power electric drives started to emerge
Many new applications call for new technologies
• High reliability/availability/maintainability
• High power
• High voltage
• High speed
• Harsh environment
• …
Conclusions
