Transcript Gas Turbine Support Systems

Ship Electric Power Systems: Activities at MIT
J. L. Kirtley Jr.
ESRDC Team Meeting
May 20, 2008
May 20, 2008
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Non-Intrusive Load Monitor
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Ship-board Installation
Power
Supply
Voltage
Board
Monitor
Mini-PC
Output
to PC
UPS
NILM
Box
Current Input
May 20, 2008
Voltage Input
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Transient-Based Identification
• Transient electrical behavior is strongly
influenced by the physical task performed by
the load
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Spectral Envelopes
• Stator current and P1 for a 3-phase induction motor
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Field Experiments
USCG Cutters
Seneca and Escanaba
USN DDG-51
LBES
May 20, 2008
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Field Condition Based Monitoring
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Cycling Systems, e.g., waste disposal
Auxiliary Sea Water (ASW)
Reverse Osmosis
Steering Gear
HVAC
Roll-Fin Control
Prop Pitch Control
Electrical Distribution
Anchor Windlass
Gas Turbine Generators (GTG)
Gas Turbine Propulsion (GTM)
Gas Turbine Support Systems
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Reconfiguration During Escanaba
Check Valve Leak
A trade-off: increased wear and energy expense during the
(hopefully brief) reconfiguration period before casualty repair.
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On three separate occasions we have been presented with NILM data
showing improper operation…This data steered us directly to the
malfunctions weeks before they became mission critical.
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Conclusion
• Significant success using nonintrusive electrical load
monitoring to diagnose system faults in
electromechanical systems.
• Successful installations on-board USCGC Seneca,
USCGC Escanaba, and at the USN DDG-51 LBES
facility.
• Goal: collaborate with a USN crew to use the NILM to
detect and remediate electromechanical problems
before they become mission cripples.
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Zonal Distribution: DDG-51
3SB SWBD
MFM-III
(Unit #7)
2SB-X SWBD
MFM-III
(Unit #5)
Ch 2
Ch 2
Ch 1
3SG SWBD
MFM-III
(Unit #11)
Ch 1
Ch 1
Ch 2
Ch 2
2SA-X SWBD
MFM-III
(Unit #6)
Positive Direction
of Current Flow
Ch 2
1SB SWBD
MFM-III
(Unit #1)
Ch 1
Ch 2
Ch 1
3SA SWBD
MFM-III
(Unit #8)
Ch 1
2SB-L SWBD
MFM-III
(Unit #3)
Ch 1
2SG SWBD
MFM-III
(Unit #10)
Ch 1
Ch 1
Ch 1
Ch 1
Shunt Trip Signal
Ch 2
2SA-L SWBD
MFM-III
(Unit #4)
May 20, 2008
Channel 1 PTs
Channel 2 PTs
1SG SWBD
MFM-III
(Unit #9)
Ch 2
1SA SWBD
MFM-III
(Unit #2)
Channel 1 CTs
Channel 2 CTs
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Multi-function Monitor
MFM III
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Stolen from the NGIPS Technology Development Roadmap
30 Nov 2007
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Top Level System Architecture
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Power Systems on Ships:
Generation
Drive Motors and Drives
This is one of
many notional
diagrams to show
functionality of the
ship electric
power system
Distribution: Wires, Switches and Controls
May 20, 2008
House and Mission Loads
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Choices that will impact ship effectiveness and cost (among
others):
Generation:
•Range of ratings
Distribution:
•AC or DC; AC frequency
•Voltage Level
•Topology
Drive Motors
•Type
•Location
Controls
•Supervisory NILM
•Reconfiguration
Storage
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Generators
•Ratings
Distribution
•Frequency
•Voltage
•Topology
•Control Strategy
Loads
Storage
Architectural Model
Performance Metrics
Efficiency
Stability
Quality of Service
Maintainability
May 20, 2008
Cost
Weight
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Modular Podded Propulsion System
Multiple Modules for
Redundancy
Enhanced TORUS:
•PM Rotors are Free
Spinning
•Can be stopped if faulted
•Maintains advantages of
PM AND DFM
Can un-clutch a section to
stop damage from a fault
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