renewable energy intermittent integration to java … · 2019-10-11 · gitet saguling - cibinong 0...

PT. PLN (Persero) UIP2B

RENEWABLE ENERGY INTERMITTENTINTEGRATION TO JAVA BALI SYSTEM

E HARIYADI– GM PLN P2B10 Oktober 2019

GENERATION READINESSup to SEPTEMBER 2019

01

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JAVA BALI SYSTEM OPERATION EVALUATIONEXECUTIVE SUMMARY up to August 2019

Energy Production

Cumulative : 126.560 GWh, 96,15 % based on Annual Planning (ROT), Oil Fueled 0,017%

Growth : 3,28%

Generation Availability (EAF)

Cumulative : System 86,98%, Coal Fired Power Plant 86,59%

Cumulative Load Factor : 78,73%

Peak Load 201927.563 MWThursday, 26-09-201918.00

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JAVA BALI SYSTEM NIGHT PEAK LOAD TREND2013 – Sept 2019

2013 2014 2015 2016 2017 2018 2019

Peak Load 22.567 23.900 24.258 25.051 25.665 27.070 27.563

Growth 6,26% 5,91% 1,50% 3,27% 2,45% 5,47% 1,82%

0,00%

1,00%

2,00%

3,00%

4,00%

5,00%

6,00%

7,00%

-

5.000

10.000

15.000

20.000

25.000

30.000

MW

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JAVA BALI SYSTEM DAY PEAK LOAD TREND2013 – Sept 2019

2013 2014 2015 2016 2017 2018 2019

Day Load 21.731 22.915 23.449 24.134 25.001 26.435 26.767

Growth 7,55% 5,45% 2,33% 2,92% 3,59% 5,74% 1,26%

0,00%

1,00%

2,00%

3,00%

4,00%

5,00%

6,00%

7,00%

8,00%

-

5.000

10.000

15.000

20.000

25.000

30.000

MW

www.pln.co.id | 33

NIGHT LOAD FLOW26 SEPTEMBER 2019 18:00; 27.563 MW

79 MW 975 MW

253 MW

-53 MW

438 MW

301 MW

UP2B JBR - UP2B JKB MW UP2B JTD - UP2B JBR MW UP2B JTM - UP2B JTD MW

GI CIANJUR - LEMBUR SITU -251 GI BREBES - PLTU CEP -171 GI BOJONEGORO - CEPU 4

GI CIANJUR - BOGOR BARU -1 GI MAJENANG - BANJAR -9 GI NGAWI - SRAGEN 0

GI SUKATANI - BEKASI -21 GITET PEMALANG - MANDIRANCAN 677 PLTU PACITAN - NGUNTORONADI 260

GI TAMBUN - PONDOK KELAPA -77 GITET KESUGIHAN - TASIKMALAYA 478 GITET KEDIRI - PEDAN 253

GITET MUARATAWAR - CIBINONG -4 975 GITET KRIAN - UNGARAN -53

GITET SAGULING - CIBINONG -181 GITET NGIMBANG - UNGARAN -27

GITET MUARATAWAR - CAWANG 424 438

GITET TASIKMALAYA - DEPOK 192

79 UP2B JTM - UP2B BLI MW

GI BANYUWANGI - GILIMANUK 301

301

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DAY LOAD FLOW26 SEPTEMBER 2018 14:00; 26.767 MW

698 MW

427 MW

1 MW

716 MW

254 MW

1603 MW

UP2B JBR - UP2B JKB MW UP2B JTD - UP2B JBR MW UP2B JTM - UP2B JTD MW

GI CIANJUR - LEMBUR SITU -254 GI BREBES - PLTU CEP -141 GI BOJONEGORO - CEPU 4

GI CIANJUR - BOGOR BARU 0 GI MAJENANG - BANJAR -17 GI NGAWI - SRAGEN 0

GI SUKATANI - BEKASI -25 GITET PEMALANG - MANDIRANCAN 1,014 PLTU PACITAN - NGUNTORONADI 276

GI TAMBUN - PONDOK KELAPA -78 GITET KESUGIHAN - TASIKMALAYA 747 GITET KEDIRI - PEDAN 427

GITET MUARATAWAR - CIBINONG -63 1,603 GITET KRIAN - UNGARAN 1

GITET SAGULING - CIBINONG 0 GITET NGIMBANG - UNGARAN 7

GITET MUARATAWAR - CAWANG 548 716

GITET TASIKMALAYA - DEPOK 570

698 UP2B JTM - UP2B BLI MW

GI BANYUWANGI - GILIMANUK 254

254

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THE JAVA BALI SYSTEM ENERGY PRODUCTION2013 – August. 2018

2013 2014 2015 2016 2017 2018Jan - Agst

2019

energy 156.398 164.167 165.993 175.094 179.250 187.605 126.560

growth 7,19% 4,97% 1,11% 5,48% 2,37% 4,66% 3,38%

0,00%

1,00%

2,00%

3,00%

4,00%

5,00%

6,00%

7,00%

8,00%

50.000

70.000

90.000

110.000

130.000

150.000

170.000

190.000

210.000M

WH

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THE JAVA BALI SYSTEM LOAD FACTOR2013 – August 2019

2013 2014 2015 2016 2017 2018Jan - Aug

2019

LF 79,10% 78,40% 79,30% 79,60% 79,80% 79,13% 78,73%

77,50%

78,00%

78,50%

79,00%

79,50%

80,00%

www.pln.co.id | 19

GENERATION ENERGY PRODUCTIONJan – August 2019

Data Source : P2B Annual Planning & Settlement Department

Hydro3,52%

Geothermal4,95%

Coal70,38%

Gas13,84%

LNG6,92%

CNG0,37%

MFO0,01%

HSD0,01%

Kontribusi Energi

JAVA BALI SYSTEM OPERATION

02

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System Operation Criteria

ECONOMIC

QUALITYRELIABLE

Reliability/security:

System ability to withstand unplanned condition without any power outage

Quality:

System ability to keep all constrain to meet the electricity quality

Economic:

Power system optimization without violation in reliability and quality

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System Reliability

1. Reliability Criteria : maintain reserve margin at minimum 30%Reserve Margin 26 September 2019 :RM=(Nett Capacity-Peak Load)/Peak Load= (34.997 – 27.563)/ 27.563 = 27%

2. Normal System Operation Criteria : Normal Criteria is Spinning Reserve fulfilled at least as same as the biggest unit size of power plant in Java Bali system. (Grid Code OC 2.2) In Java Bali = 815 MW

3. Alert Condition Criteria : maintain System Reserve at least as twice as the biggest unit size. (1630 MW)

4. Defense Scheme Protection : Manual Load Shedding (f<49,5 Hz)UFR (48,4 < f < 49,0 Hz, in 7 steps)Islanding Mode (48,1 < f < 48,3 Hz)Over Generation SheddingOver Load Shedding

5. Grid Limitation / Constraint :network configuration (building sub-system)

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SUB SYSTEM SUPPLY CONDITIONNIGHT PEAK LOAD 27.563 MW26 SEPTEMBER 2019 ,18.00 WIB

Besok Pagi

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Service Quality

1.Voltage Stability (Grid Code OC 4.0) :150 kV and 66 kV system : +5% and -10%500 kV system : +/- 5%

How to keep voltage stability :- Reactive power management (generation side and compensation)- Transmission operation management

2. Frequency Stability (Grid Code OC 3.0) : 49.80 – 50.20 Hz (99% achieved in August-September 2019)Load Frequency Control ( approx ± 311 MW * )Governor Free Mode ( 72,9% power plants participate per October 2019)

*

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Economic Operation of Java Bali System

System Constraint :1. Stability (System Inertia)2. Primary energy Take or Pay Contract and Pipe Line Pack limitation (gas,

geothermal)3. Transmission congestion 3. Long distance power transfer (voltage stability)4. Losses

Power Plant Constraint :1. Power plant mode of operation (base load, load follower or peaker)2. Availibility condition of power plant (FOR, derating)3. Minimum technical loading

Economic Dispatch :1. Hydro thermal coordination2. Merit order

www.pln.co.id | 16

LOADSTACKING & COMPOSITION26 Sept 2019

Sumber Data : Data Aplikasi Rapsodi P2B

-

3.000

6.000

9.000

12.000

15.000

18.000

21.000

24.000

27.000

00:3

0

02:3

0

04:3

0

06:3

0

08:3

0

10:3

0

12:3

0

14:3

0

16:3

0

18:3

0

20:3

0

22:3

0

ROR Geothermal Coal GAS LNG CNG HSD MFO Hydro

27563

Hydro0,45%

Geothermal8,11%

Coal50,79%

Gas28,28%

LNG11,16%

CNG1,21%

MFO0,00%

HSD0,00%

Cost Contribution

Hydro2,06% Geothermal

4,40%

Coal70,47%

Gas17,09%

LNG5,44%

CNG0,54%

MFO0,00%

HSD0,00%

Energy Contribution

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MUST RUN GENERATION

Besok Pagi

Future of Java Bali System

03

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Load Balance of Java Bali System 2018-2027

Additional 26.764 MWCommitted : 20.685 MW

2027

PLN 59%

IPP 41%

Generation:

Source:RUPTL 2018-2027

Projected Fuelmix04

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Java Bali System Fuelmix


Future Transmission & Substation

05

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Transmissions & Substations

Transmissions : 18,600 kms

Substations: 94,400 MVA


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Java Bali System Expansion

25

*) COD Pembangkit Berdasarkan RUPTL 2017-20263

CRATA

CBATUBKASI

CIBNG

CWANG

GNDUL

UJBRG

MDCAN

BDSLN

RWALO

PEDAN

UNGAR

TASIK

KDIRI

AMPEL

GRSIK

SBBRT

DEPOK

PITON

SBSLNNGBNG

BTANG

KMBNG

BNGIL

NTSRI

SRLYAMTWAR

IDMYU

CKLNG

MKRNGDKSBI

PRIOK

CLGON

TJATI B

GRATI

WARU

SKTNI

TMBUN

~~~

~

~~

35 68 9

12 14

1817

1516 19

721

23

24

11

BLRJA

DLTMSLGKNG

25

~

TJWAR

CKUPA

LNTAR

UBRUGTBLRK

~ 26

~22

RMBNG

CWGBR

1

XBOGOR

2

1310

20

TWLAN

~~

WTDDL

~

~4

27~

1. PLTU Jawa-9 & Jawa 10 2x1000 MW (2023/2024)2. PLTU Banten 1x660 MW (2026)3. PLTU Jawa-7 2x991 MW (2020)4. PLTU Jawa-5 1x1000 MW (2022)5. PLTU Lontar Exp #4 1x315 MW (2019)6. PLTGU Muara Karang 500 MW (2019)7. PLTDG/MG Senayan 100 MW (2019)8. PLTGU Jawa-2 800 MW (2018/2019)9. PLTGU Muara Tawar Add-on Blok 2,3,4 650 MW (2019)

19. PLTU Jawa Tengah (PPP) 2x950 MW (2020)20. PLTGU Jawa-Bali 1 779 MW (2020)21. PLTU Jawa-4 2x1000 MW (2021)22. Grindulu PS 1000 MW (2025)23. PLTGU Jawa-3 800 MW (2021)24. PLTGU Grati 450 MW (2018)25. PLTGU Grati Add-on Blok 2 183 MW (2019)26. PLTGU Madura 450 MW (2023)27. PLTU/GU/MG Bali 135 MW (2022)

10. PLTGU Jawa-1 2x880 MW (2022/2023)11. Upper Cisokan PS 4x260 MW (2024/2025)12. PLTA Rajamandala 47 MW (2019) 13. PLTU Indramayu #4 1000 MW (2026)14. PLTA Jatigede 2x55 MW (2019)15. PLTU Jawa-1 1x924 MW (2022)16. PLTU Jawa-3 2x660 MW (2024/2025)17. PLTA Matenggeng PS 4x225 MW (2025)18. PLTU Jawa-8 1x945 MW (2020)

GITET 500 kV

LEGENDA

SUTET 500 kV

Pembangkit

Rencana GITET 500 kV

Rencana SUTET 500 kV

Rencana Pembangkit~


Loadflow 2020-2023

06

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Night Load Flow 500 kV 2020 (19.00 WIB)

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Subsystem Configuration 2020-2023

07

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Subsystem Evolution

2018 :11 Subsistem

2023 :22 Subsistem

2023 :10 Subsistem

2018 :5 Subsistem

2023 :9 Subsistem

2023 :1 Subsistem

2018 :7 Subsistem

2018 :3 Subsistem

2023 :7 Subsistem

2018 :1 Subsistem

UP2B JKB

UP2B JBR

UP2B JTD

UP2B JTM

UP2B BALI

2018 :27 Subsistem

2023 :49 Subsistem

SUBSISTEM JAWA BALI

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Area Power Balance 2020 (19.00 WIB)

121378977

UP2B JAKARTA & BANTEN

932

249

UP2B BALI6809

4348

UP2B JATIM

44123944

UP2B JAWA TENGAH & DIY

62724681

UP2B JAWA BARAT

Cadangan Operasi (MW)

Mampu Pasok = Beban Puncak + Cadangan Operasi

Beban Puncak (MW)

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987

194

UP2B BALI7191

4770

UP2B JATIM

46664491


66745080

UP2B JAWA BARAT

1309810416




Beban Puncak (MW)

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1045257

UP2B BALI


75974414

UP2B JATIM

49404312


70234779

UP2B JAWA BARAT

1354510585


Cadangan Operasi (MW)Beban Puncak (MW)

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1103

199

UP2B BALI

73916018

UP2B JATIM

49695082


7271

4532

UP2B JAWA BARAT

1381411116




Beban Puncak (MW)

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Subsistems Load Balance 2021(Night Peak Load)


359441

Suralaya 1&2 - Cilegon 3

APB DKI JAKARTA & BANTEN

1000898

Cilegon IBT 1&2 – PLTU Labuan

305495

Balaraja IBT 3&4

400400

Balaraja IBT 1&2

362438

Lengkong IBT 1&2

355445

Gandul IBT 1&2

383417

Kembangan IBT 1&2

223

577

Gandul IBT 3&4

14881294

Priok IBT 1&2 – Cawang IBT 1

395405

Cawang IBT 2&3

425375

Depok IBT 1&2

420380

Bekasi IBT 2&4

658542

Bekasi IBT 1&3 – Cibinong IBT 3

592542

Cibinong IBT 1&2 – PLTP Salak

734443

Cibatu IBT 1&2

376424

Cibatu IBT 3&4

632771

Bandung Selatan IBT 1&2

587376

Cirata IBT 1&2

419

855

Tasikmalaya IBT 1&2 -Mandirancan IBT 3

613

196

Ujung Berung IBT 1&2

679850

Ungaran IBT 1&2

364

1679

Ungaran IBT 3&4 - Tanjung Jati IBT 3

442358

Pedan IBT 1&2

580734

Kesugihan IBT 1&2

665

387

Pedan IBT 3&4

833549

Ngimbang IBT 1&2

547

253

Krian IBT 1&2

436364

Krian IBT 3&4

705

407

Kediri IBT 1&2

271

529

Kediri IBT 3&4

14381399

Paiton - Grati IBT 1&2

APB JAWA BARAT APB JAWA TENGAH & DIY APB JAWA TIMUR


251

549

Cikupa IBT 1&2

215

585

Durikosambi IBT 1&2

305495

Durikosambi IBT 3&4

768920

Ubrug IBT 1&2 – PLTU Pelabuhan Ratu

457343

Tambun IBT 1&2

647

154

Deltamas IBT 1&2

469332

Cibatu Baru II IBT 1&2

279

612

Cikalong IBT 1&2

13771300

Mandirancan IBT 1&2 - Cirata IBT 3

892832

Ungaran IBT 3 - Tanjung Jati IBT 1&2

385443

Tuntang IBT 1&2

283517

Batang IBT 1&2

598453

Kesugihan IBT 3&4

16621028

Gresik IBT 1&2 - Waru IBT 1&2

587

217

Bangil 1&2

APB BALI

884956

Lontar IBT 1&2 – PLTU Lontar

782

1727

Muarakarang

249

552

Cikupa IBT 3&4

230

570

Muaratawar IBT 1&2

217

583

Bogor X IBT 1&2

1138

521

Bali

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Subsistems Load Balance 2023(Night Peak Load)


398402

Suralaya 1&2 - Cilegon 3

APB DKI JAKARTA & BANTEN

1169

729

Cilegon IBT 1&2 – PLTU Labuan

393407

Balaraja IBT 3&4

335

465

Balaraja IBT 1&2

438362

Lengkong IBT 1&2

452

348

Gandul IBT 1&2

307

493

Kembangan IBT 1&2

418382

Gandul IBT 3&4

13351447

Priok IBT 1&2 – Cawang IBT 1

436365

Cawang IBT 2&3

481319

Depok IBT 1&2

476324

Bekasi IBT 2&4

739461

Bekasi IBT 1&3 – Cibinong IBT 3

633502

Cibinong IBT 1&2 – PLTP Salak

745432

Cibatu IBT 1&2

510

290

Cibatu IBT 3&4

825578

Bandung Selatan IBT 1&2

786

176

Cirata IBT 1&2

486788

Tasikmalaya IBT 1&2 -Mandirancan IBT 3

483

326

Ujung Berung IBT 1&2

670859

Ungaran IBT 1&2

303

1741

Ungaran IBT 3&4 - Tanjung Jati IBT 3

486314

Pedan IBT 1&2

551762

Kesugihan IBT 1&2

607445

Pedan IBT 3&4

744637

Ngimbang IBT 1&2

673

127

Krian IBT 1&2

382418

Krian IBT 3&4

868

294

Kediri IBT 1&2

375425

Kediri IBT 3&4

14771409

Paiton - Grati IBT 1&2

APB JAWA BARAT APB JAWA TENGAH & DIY APB JAWA TIMUR


387413

Cikupa IBT 1&2

381419

Durikosambi IBT 1&2

308

492

Durikosambi IBT 3&4

938760

Ubrug IBT 1&2 –PLTU Pelabuhan

Ratu

546

254

Tambun IBT 1&2

527

273

Deltamas IBT 1&2

495305

Cibatu Baru II IBT 1&2

260

632

Cikalong IBT 1&2

15601116

Mandirancan IBT 1&2 - Cirata IBT 3

820905

Tanjung Jati IBT 1&2

415414

Tuntang IBT 1&2

276524

Batang IBT 1&2

574486

Kesugihan IBT 3&4

16591391

Gresik IBT 1&2 - Waru IBT 1&2

664

141

Bangil 1&2

APB BALI

978861

Lontar IBT 1&2 – PLTU Lontar

10591449

Muarakarang

302498

Cikupa IBT 3&4

298502

Muaratawar IBT 1&2

252

549

Bogor X IBT 1&2

1215

444

Bali

402398

Cililitan IBT 1&2

Java Bali System Future Challenge

08

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Technology influence of Java Bali Power System Operation

• Modern Power Control• Automatic Generation Control

• Wide Area Monitoring System

• Weather Forecast/Monitoring

• Substation Automation System (SAS)

• Flexible AC Transmission System (FACTS)

• HVDC (High Voltage DC)

• IoT (Internet of Things)

• Disaster Management

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Business Model of Java Bali Power System Operation

• Modern Power System• Power Market

• Renewable Energy

• Distributed Generation

• Artificial Intelligence of power system

• Electric Vehicle (EV)

• Smart Grid

THE INFLUENCE OF INTERMITTENT RENEWABLE POWER PLANTS

09

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Background

1. 35000 MW project is to support economic growth as main infrastructure

2. Nationwide energy mix from renewable energy is targeted at 23% at 2025.

(25% in electricity utility)

3. Renewable Energy technology has been commercially mature

4. Government target in lowering average system cost (BPP)

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Scope

1. Capacity of intermittent renewable power plant which can be operated in Java Bali system and still keep maintaining reliability/security, quality and economic aspects.

2. Power system operation considering intermittent power plant integration.

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Defect to Frequency

One characteristic of Wind Power Plant is lowestcertainty of energy availability compared to othertype of power plant thus variation of its load willaffect system frequency

Solar power plant load is extremely fluctuated(full load to no load in seconds) thus willsignificantly affect frequency quality.

Sumber :SMA German, 2017

Solar PV

Household

Wind Generation

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Renewable Energy – Constraint System

Types or renewable energy power plant:

− Planned control / dispatchable (hydro/PLTA, geothermal/PLTP)

− Unplanned control / intermittent / non-dispatchable(solar/PLTS, wind/PLTB), which need to be backed-up by system with:

• Load Frequency Control 200 MW

• Spinning reserve (1 biggest unit – 813 MW) with response rate at 5 MW per minute

• Standby reserve (2 x spinning reserve – 1.626 MW), with responsetime around 30 minutes

• Peaker (Gas Turbin/PLTG open cycle with response time 10 minutes)

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Renewable Energy – Grid Constraint

• In sub-system, capacity of intermittent units is limited by capability of inter-bus transformer (IBT) with residual capacity equal with capacity of intermittent unit

• Grid capability of sub system should be maintain its reliability as N-1 therefore adding intermittent unit will be limited to N-1 of grid

• Thus, intermittent unit can only be connected to 150kV or 20kV grid and not to 500kV grid

Example :

• Pedan Subsistem : could only accommodate maximum 200MW (PPA Wind/PLTB Samas 70 MW)

• Cirata Subsistem : maximum 100 MW

• Bali Subsistem : maximum 50 MW

• Madura Island (Krian Subsistem 1,2) : maximum 10 MW

• Intermittent unit could not provide adequate reactive power thus can not be transmitted in long distance

• Capacity of intermittent unit can be allowed if system reserve is ready

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Intermittency

- Intermittent units are non-dispatchable,

- Operation depends on energy source availability which is uncontrollable,

- Intermittent power plant penetration to power system will affect :

▪ Quality of frequency and voltage

▪ Economic aspect

▪ System stability

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Stability

One characteristic of Intermittent unit is not having inertia thuspenetration to grid will lower system inertia

Impact on non intermittent unit trip when intermittent unit is inoperation is higher than when intermittent unit is not inoperation.

Intermittent unit needs energy storage as pumped storage orbattery

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Economic Aspect

- Because of Intermittent Unit impact on system frequency, itneed to be prepared a Special Reserve (Special SpinningReserve) to maintain system reliability.

- Special reserve comes from thermal unit with very fast ramprate (Gas/PLTG and Diesel/PLTD) which has very highoperation cost.

- Consequently with this special reserve, average cost ofoperation will increase

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Solar Energy Potential

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Wind Power Plant Potentioal

Sumber : windprospecting

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Intermittent Power Plant Proposal Proposed (MoU FS)Type of Power Plant P Nominal (MW) Rencana Lokasi

Solar Power Plant (PLTS) 100 GI (Substation) 150 kV Negara, Bali

Solar Power Plant (PLTS) 100 GI 150 kV Amplapura, Bali

Solar Power Plant (PLTS) 100 GI 150 kV Kubu, Bali

Solar Power Plant (PLTS) 100 GI 150 kV Cirata

Solar Power Plant (PLTS) 600 (150) (Switching Station Line Harapan Indah – Kandang Sapi)

Solar Power Plant (PLTS) 500 Scaterred in Java Bali

Wind Power Plant (PLTB) 70 GI 150 kV Wates, Samas

Wind Power Plant (PLTB) 250 Sukabumi

Wind Power Plant (PLTB) 20 P. Nusa Penida/Nusa Lembongan/Nusa Ceningan

Wind Power Plant (PLTB) 150 Garut

Wind Power Plant (PLTB) 103 Lebak

Wind Power Plant (PLTB) 102 Ciemas, Sukabumi

Hybrid PLTS dan PLTB 220 Tegal

Hybrid PLTS dan PLTB 140 Tuban

PLTS & PLTD/MG (Hybrid) Madura Isolasi

PLTS & PLTD/MG (Hybrid) Gili Ketapang

PLTS & PLTD/MG (Hybrid) Bawean

PLTS & PLTD/MG (Hybrid) Karimun, Jawa Tengah

TOTAL 2.555

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Fast response and flexible power plant to compensate RE Intermittent

Load

& N

et L

oad

(M

W)

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

14,000

16,000

18,000

20,000

22,000

24,000

26,000

28,000

30,000

32,000

34,000

Load, Wind & Solar Profiles --- Base ScenarioJanuary 2020

Net_Load Load Wind Total Solar

Win

d &

So

lar

(MW

)

6,700 MW in

3-hours

7,000 MW in

3-hours

12,700 MW

in 3-hours

Net Load = Load - Wind - Solar

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Defect to Voltage

Voltage from Wind Power Plantdepends on wind speed, thus it isunpredictable

The entry of PV Power Plant into grid couldmake voltage range variate higher thanwithout penetration of PV Power plant

Sumber : - ELP and Power Grid International

- Researchgate 2016

www.pln.co.id |

Voltage Regulator

According to voltage characteristic at intermittent power plant, itwill be needed voltage regulator (Volt-VAR Control). Volt-VARcontrol will act as profile voltage buffer and supportingelectromechanical voltage regulator.

Sumber : ELP and Power Grid International

1. Downward ramping capability

Thermal resources operating to serve loads at night must be

ramped downward and potentially shut down to make room

for a significant influx of solar energy after the sun rises.

2. Minimum generation flexibility

Overgeneration may occur during hours with high renewable

production even if thermal resources and imports are reduced

to their minimum levels. A system with more flexibility to

reduce thermal generation will incur less overgeneration.

3. Upward ramping capability

Thermal resources must ramp quickly from minimum levels during daytime hours and new units may be required to start to meet high net peak demand occurring shortly after sundown.

4. Peaking capability

The system will need enough resources to meet the highest net-loads with sufficient reliability

Power plant characteristic to compensate Intermittent RE Power Plant

www.pln.co.id |

60 MW

Back Up Unit

Because of renewable power plant intermittency, fast response powerplants (Gas Fired Power Plant/PLTG or Diesel Fired Power Plant/PLTD) areneeded as a back up when the load of RE power plant is decreasing

PLTS Unit Back Up

TML

60 MW

www.pln.co.id |

Example Duck Curve in California regarding withIntermittent Renewable penetration

www.pln.co.id |

Maximum capacity in one time

Maximum capacity of Intermittent Units are limited by:

1. Ramp up/ down ability of thermal power plant

2. Thermal power plant technical minimum load + regulator power plant

3. Start up/down speed of thermal power plant

4. Capacity of power plant which can act as frequency regulator

Power Plant Ramp Rate

Coal Fired Steam Power Plant (PLTU) 1 – 5 MW/minutes

Gas Fired Steam Power Plant (PLTGU) 5 – 8 MW/minutes

Gas Fired Power Plant (PLTG) 15 – 20 MW/minutes

Hydro Power Plant (PLTA) 20 – 50 MW/minutes

www.pln.co.id |

Quota of acceptable Intermittent Power Plant capacity to be integrated to Java Bali System

Phase YearLoad(MW)

RMQuota (MW)

Constraint

∆ Avera

ge Cost

Prasyarat

1 2018 – 2020 30.792 36% 200 LFC ≈ LFC

2 2020 – 2022 34.581 38% 1000Spinning reserve,

Must Run unit+

+ AGC, WeatherMonitoring System, Fast Response (10 minutes full load) and flexible

3 2022 – 2024 38.150 44% 3000Peaker power plant

capacity≈

+ Pump Storage Upper Cisokan, Storage System, FSRU/CNG Terminal

4 > 2024 44.518 30%20%Peak Load

USC CFSPP TML, Fast Response Unit

- + Power Market

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renewable energy intermittent integration to java … · 2019-10-11 · gitet saguling - cibinong 0...

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