advanced combined cycles with hybrid energy storage

GE Power

Electricity Conference 2017

Advanced Combined Cycles with Hybrid Energy Storage

Marcus Scholz

© 2017, General Electric Company.

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Company (GE) proprietary information. It is the property of GE and shall not be used,

disclosed to others or reproduced without the express written consent of GE, including, but

without limitation, in the creation, manufacture, development, or derivation of any repairs,

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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

2

© 2017 General Electric Company – Proprietary Information. All rights reserved

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

4


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

5


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


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


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

9


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

13


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!

14


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


Hybrid Power Plant concept

GE Confidential - Distribution authorized to individuals with need to know only

16

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© 2017 General Electric Company – Proprietary Information. All rights reserved.

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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© 2017 General Electric Company – Proprietary Information. All rights reserved.

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


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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advanced combined cycles with hybrid energy storage

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