GE Power
Electricity Conference 2017
Advanced Combined Cycles with Hybrid Energy Storage
Marcus Scholz
© 2017, General Electric Company.
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the information herein are provided for information purposes only and are subject to change
without notice. NO REPRESENTATION OR WARRANTY IS MADE OR IMPLIED AS TO ITS
COMPLETENESS, ACCURACY, OR FITNESS FOR ANY PARTICULAR PURPOSE.
All relative statements are with respect to GE technology unless otherwise noted.
GE Gas Power
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AgendaAgenda
GE’s advanced technology products
• 63%+ Combined Cycle Technology
• 7/9HA product flexibility features
• Grid network paradigm
• Energy Storage in the ancillary market
Hybrid plant concepts
• Small Scale BESS and Aero engine
• Medium Scale BESS and Combined Cycle
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© 2017 General Electric Company, Proprietary Information. All rights reserved
World’s largest Gas Turbine portfolio and fleet9HA.029HA.01
9F.069F.059F.049F.03
GT13E29E.049E.03
7HA.02
7HA.017F.067F.057F.047E.03
LMS1006F.03
LM60006F.016B.03
TM2500LM2500
+7000 Gas Turbines
+300M Operating Hours
+1600 GW
GE
Fleet
(%)
Delta vs.
Industry
(% pts)
Reliability
Availability
Start Reliability
98.0
91.9
98.1
+0.5
+1.0
+0.4Source: ORAP®. All rights to underlying data reserved: SPS ®.
Modified by GE. Rolling 12-month data Oct 2015 – Sept 2016.
544 MW446
359314
287265
203145
132
372289
271241
19891
118
82
5954
4437
34
50 Hz
60 Hz
Geared
50 Hz
60 Hz
50/60Hz
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© 2017 General Electric Company, Proprietary Information. All rights reserved
Enabling >63% combined cycle efficiencyTechnology pipeline for the next decade
Supercomputers
allow for
improved aero
layouts
UNSTEADY
PHYSICS
CERAMIC MATRIX
COMPOSITE
Durability @ 500F
hotter than metals,
uncooled
ADDITIVE
MANUFACTURING
Complex layouts
through advanced
manufacturing
Low emissions
at 3000F
COMBUSTION
Leveraging GE’s aero engine heritage
and F-fleet experience
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© 2017 General Electric Company, Proprietary Information. All rights reserved
Eff
icie
nc
y %
Now Future
Future developments
• Continuous innovation
• Digital integration
• Global experience
• Hybrid Plant concepts
Ae
ro
Co
oli
ng
Se
ali
ng
Ma
teri
als
Co
mb
ust
ion
Ste
am
Cy
cle
… p
ress
. & t
em
p.
63%
65%
© 2017, General Electric Company. Proprietary Information. All Rights Reserved.6
© 2017 General Electric Company, Proprietary Information. All rights reserved
Unique test cell for full load product validationFull speed full load power train
20122011 2014 2015 2016 2018
7HA.01validated
Startermotor
Drivemotor
Gearbox
Advancedcompressor
HA productiongas turbine
Torqueconverter
Power train50 m
50/60-Hz full-scale gas turbine and
compressor validation facility
• Disconnected from grid
• Variable speed, variable load
• Thorough product mapping
• Higher reliability
• Validates prior to first fire
• Testing for growth
Full scale compressor test
7F.05validated
9HA.01validated
7HA.02validated
9HA.02validation
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Test bed capability for Frequency response
• No generator… no direct reading of
mech power…. Need to focus on
speed…lowest possible inertia
• Load compressor demand
immediate reacts as a "step "
(<2 s)…
• Unit can handle ±20% load steps
(±65 MW)… previously only
experienced with aero/E-class
engines.
FrequencyContained at 94.5 % /
47.2 Hz
Demand:
+ 62 MW in <2s
GT mech power:
+62 MW in 23 s
Droop response mode demonstrating >20% GT load step
Unique proof of frequency containment….with smallest
inertia possible of power island… for the same load
unbalance.8
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9HA GE Power Island – digitally enabled
Integrated plant features support >62% net efficiency
➢ 109HA Single shaft plant
➢ Cooling tower re-used
➢ Digital fieldbus enabled
➢ Smart instruments
➢ Fast response capable
➢ Extended turndown w/
emission compliance
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Leading the industry in operating flexibility
CC
Pla
nt
Ou
tpu
t
Industry standards
• GT start time … 15-20 minutes
• Plant start time … > 45 minutes (hot)
• Ramp rates … 20 MW/min per GT
• Turndown … 40 - 60% GT base load MW
• Major interval starts … 1000
GE capability
✓ GT start time … 10 - 12 minutes
✓ Plant start time … 23 minutes (hot)
✓ Ramp rates … 80 MW/min in emissions
compliance
✓ Turndown … 25% GT baseload MW
✓ High part load efficiency
✓ Response and standby modes
Optimized part load efficiency
for lower opex
Highest flexibility of large gas turbine combined cycles
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Fast Combined Cycle Start-Up validated109HA Hot start with Rapid Response capability
Purge credit
validated for
faster plant
starts from GT
roll to full load
2-min steam turbine
acceleration
Self-Synchronizing
clutch engaged
0 5 10 15 20 25 30
Best in class Hot start-up capability < 30 min
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CCGT validated Frequency response
+94 MW in 10 s
50 Hz
49.5 Hz
+140 MW in 20 s
Load acceptance >15% plant power output in 10 seconds
Unique capability to respond with magnitude to grid events
Combined cycle response test:
• Inject artificial frequency in GT &
ST controllers… (multiple test at
various initial loads)
• Verified grid code compliance
• Demonstrated rapid response
capability to maintain grid
frequency.
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Load Rejection to part / island load
Proven plant capability to reject
from base to part load, with
adequate frequency containment.
Ideal fit for industrial applications
Intent
• Load rejection to part load to sustain
industrial process / supply need.
• Maintain stable plant operation after
large transients.
-270 MW in 4 s
567 MW
307 MW
50 Hz
51 HzHigh RoCoF : +1Hz/1s
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Market for Ancillary Services
Electrical network paradigm
GT
Production Demand
Balance
Production & demand balance is naturally unstable.
• Grid stability is achieved by continuous balancing of demand vs. generation, thereby maintaining frequency within acceptable deviation
• A larger grid maintains more inertia and is more resilient against sudden load imbalances, but also requires fast responding capacity reserves!
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Todays challenges of electricity networks
Decentralized Generation
Variable Generation
Large Generation
Active Power Reactive Power
VAR ControlFrequency Control
Energy Storage
Variable Electricity Demand
Hybrid Plant Concepts
Ancillary Service DemandGeneration Landscape Consumer Landscape
Mitigations & Solutions Landscape
Electric Vehicles
Electricity Supply Reliability
+
GT
Production Demand
Balance
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Hybrid Power Plant concept
GE Confidential - Distribution authorized to individuals with need to know only
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Hybrid LM6000 peaker
GE’s integrated package
includes:➢ software to manage turbine ramps and
battery discharges characteristic.
➢ Inverters and capacitors to regulate
battery charge and discharge
Key IP is the integration and the controls
LM6000 can reach 50 megawatts (MW) in just 5
minutes.
+10MW battery (lithium-ion)
lasts up to 30 minutes.
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Battery system
10 MW
4.8 MWh
0
10
20
30
40
50
0 300 600
Po
we
r, M
W
Series1
Series2
Series3
~12MW
Additional revenue while LM6000 on hot stand-by
3 Spinning Reserve $7/MWh + Frequency Regulation = $30/MWh (2016 PJM average)
60 MW “Super Peaker”50 MW LM6000 + 10 MW / 4.8 MWh battery
▪ Typical LM6000 <2000hr/yrUS grid region PJM as example
▪ Li-Ion battery 10MW / 4.8MWh
▪ 0min start GT, collect “spinning reserve”
when GT not running
▪ Inject & remove power, collect “regulating
bonus” all year
▪ Performance … fast ramp, O&M, BoP
▪ Customer benefit >$4.5MM/yrSpin = 50 MW x $7/MWh x 6,000 hr/yr = $2.1MM/yr 3
Reg = 10 MW x $30/MWh x 8,000 hr/yr = $2.4MM/yr 3
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+ inverters
10min5min2.8min
50MW @ 5min
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Example for a 9HA CC with 10% FR (output optimized):
Most cost-competitive solution to increase revenues from Frequency Response
Not limited to FR, many sources of revenues:
• CCGT Black-start capability,
• FR when plant off-line,
• Faster FR,
• Load shifting…
• And much more grid services!
9HA CCGT with Battery Energy Storage (BESS)
Battery provides instantanous power while ST loads
Without BESS…+62MW in 10s
With BESS adder: 82MW in 10s
0
2
4
1 2 3
€/MWh
Time (min)
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• Hybrid plants benefits from complementing systems of combined CCGT and BESS (vs. separate systems).
• Hybrid BESS can either increase reserve amplitude or continuous operating point. Main intend is to provide immediate reserve capacity and/or compensate ST inertia.
• Hybrid BESS is modular and can easily be adapted to customer needs to generate values from several ancillary services (frequency response, black-start, long-duration energy storage,…).
• Advanced 7/9HA Combined cycles gain industry acceptance and can support frequency response duties better than before.
Conclusions
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