PERUNDINGAN TENAGA By Mr. Gurcharan Singh Head (GSO) 10 th JUNE - - PowerPoint PPT Presentation

MESYUARAT PANEL PERUNDINGAN TENAGA

By

• Mr. Gurcharan Singh

Head (GSO)

10th JUNE 2014

JOHOR PAHANG MELAKA NEGERI SEMBILAN SELANGOR PERAK KEDAH PULAU PINANG KELANTAN TERENGGANU PERLIS WILAYAH PERSEKUTUAN

MELAKA BERSIA KENERING TEMENGOR KENYIR SG PIAH UPPER SG PIAH LOWER JOR WOH ODAK CHENDEROH PERGAU

N

PRAI GELUGOR SEGARI CONNAUGHT BRIDGE SERDANG KAPAR POWERTEK PD POWER GENTING SANYEN PORT DICKSON YTL PASIR GUDANG PAKA YTL

JANAMANJUNG YAN

3

• 21,509 MW

GENERATION INSTALLED CAPACITY

• 11,222 MW (52.2%)

TNB

• 10,287 MW (47.8%)

IPP

• 16,583 MW

MAXIMUM DEMAND (29/05/14)

• 4,926 MW (29.7%)

RESERVE CAPACITY MARGIN

• 345.25 GWH/DAY

HIGHEST ENERGY DEMAND (25/6/2013)

404

SUBSTATION

21,092

CIRCUIT KILOMETRES

95,990

MVA INSTALLED CAPACITY

SYSTEM HIGHLIGHTS

2014 17,152 MW 2015 17,697 MW 2016 18,282 MW 2017 18 ,880 MW

2018 19,492 MW

17,152MW

FORECAST DEMAND GROWTH

Average growth of 3.31% from 2014 - 2018

17,697MW 18,282MW 18,880MW 19,492MW

To support the Demand growth and Generation plant-up, Transmission needs augmentation of National Grid System.

12,000 13,000 14,000 15,000 16,000 17,000 Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug MW

Monthly Peak Demand, MW

FY 08/09 FY 09/10 FY10/11 FY11/12 FY12/13 FY13/14

MONTHLY MAXIMUM DEMAND FY 2008/2009 – FY 2013/2014

MONTHLY MAXIMUM DEMAND FY 2008/2009 – FY 2013/2014

Financial Year Highest MD (MW) 08/09 14,245 09/10 15,072 10/11 15,476 11/12 15,826 12/13 16,562 13/14 16,583

Maximum Demand for 2014 forecasted to increase during June to August impacted by the El-Nino effect.

GENERATION MIX 2002-2013

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% FY0203 FY0304 FY0405 FY0506 FY0607 FY0708 FY0809 FY0910 FY1011 FY1112 FY1213 FY1314

Generation Mix For Peninsula Malaysia

COAL GAS HYDRO OIL DISTILLATE

• Major fuel mix in Peninsula

Malaysia - Coal and Gas

• Gas dependability reduced

from 75% in 2003 to 47% in 2013.

• Coal contributes increased

to 45% in 2013.

• For FY1314, coal

percentage has dropped due to major rectification work by stations for tube leak problems.

• Oil and Distillate are back up

fuels during gas curtailments and coal unit forced

• utages.

43 42 39 36 36 41 46 53 57 59 12 8 3 3 1 5 4 4 4 4

10 20 30 40 50 60 70

2014 2015 2016 2017 2018 Percentage Generation Mix by Feul

Gas Coal LNG Hydro

GENERATION MIX BY FUEL 2014 - 2018

• Future plant-up of coal units

pushes Coal to 59% in 2018.

• Gas and LNG kept at 37%

and hydro at 4%.

• Coal becomes major fuel

mix going forward due to its’ competitive pricing and availability readiness.

Gas and LNG is differentiated by price and quantum.

• Below 1000mmscfd – GAS (Subsidised price)
• Above 1000mmscfd – LNG (Bintulu price)

GENERATION MIX BY FUEL 2014-2018

2 4 6 8 10 12 14 16 18 20

20 14 17.93 13.67 7.32 9.34 6.56 1.02 0.82 1.01 1.03 0.44

• 98%
• The international benchmark

for system performance and reliability.

• An index that measures the

severity of each system disturbance relative to the size

• f the system.
• Determined by calculating the

ratio of unsupplied energy during an outage to the energy that would be supplied during one minute, if the supplied energy was at its peak value.

TNB managed to reduce the transmission system minutes from 20min in 2002 to 0.44min in 2013.

PERFORMANCE - SYSTEM MINUTES

SYSTEM MINUTES - BENCHMARKING

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 TRANSCO Phillipines ELECTRANET Australia ESKOM South Africa RTE France TNB Malaysia - 2013

12.23 8.30 4.73 2.30 0.44

Minutes

For 2013, TNB’s performance was better than KEPCO and TEPCO, two major utility in Asia.

KEPCO: 25.106 minutes TEPCO: 9 minutes

JOHOR PAHANG MELAKA NEGERI SEMBILAN SELANGOR PERAK KEDAH PULAU PINANG KELANTAN TERENGGANU PERLIS WILAYAH PERSEKUTUAN

MELAKA BERSIA KENERING TEMENGOR KENYIR SG PIAH UPPER SG PIAH LOWER JOR WOH ODAK CHENDEROH PERGAU

PRAI GELUGOR SEGARI CONNAUGHT BRIDGE SERDANG KAPAR POWERTEK PD POWER GENTING SANYEN PORT DICKSON YTL PASIR GUDANG PAKA YTL

JANAMANJUNG YAN

Prai (TNB) 2 x 535 MW CCGT (Jan 2016) Connaught Bridge (TNB) 1 x 350 MW CCGT (Sep 2015) Janamanjung (TNB) Unit 4: 1 x 1000 MW Coal (Mar 2015) Unit 5: 1x1000 MW Coal (Oct 2017) Tg Bin (IPP) Unit 4: 1 x 1000 MW Coal (Mar 2016) PCP, Pengerang (IPP) 400 MW Import (Jul 2017) Hulu Terengganu (TNB) 250 MW Hydro (Sep 2015) Ulu Jelai (TNB) 372MW Hydro (2018) Chenderoh (TNB) 12MW Hydro (Dec 2015) Tembat (TNB) 15MW Hydro

ADDITIONAL 7,500 MW GENERATION CAPACITY COMMITTED UNTIL 2019

1MDB (IPP) Unit : 2 x 1000 MW Coal (2019)

GURUN (E) JUNJUNG AYER TAWAR JANAMANJUNG BKT TAREK KAPAR LENGGENG OLAK LEMPIT JIMAH YONG PENG (E) BKT BATU TG BIN PASIR GUDANG

500kV line 500kV line but energized at 275kV

BENTONG (S) ULU JELAI

TRANSMISSION PROJECTS REINFORCING THE GRID

TAPAH HULU TERENGGANU NEW PRAI Kuala Ketil

• 500KV LINES AYER TAWAR

– TAPAH & LENGGENG – YONG PENG(E) (2019)

• ULU JELAI HYDRO (2017)
• TG BIN U4 (2016)
• JANAMANJUNG U4 & U5

(2015)

• PRAI (2016)
• HULU TERENGGANU

(2015)

MAJOR CHALLENGES

Constraint on generation

• perating reserves

Risk of water supply to power stations Challenging Weather

Reduced rainfall at hydro catchments

3 2 4

High unplanned generator outages Major Challenges Faced by Transmission Grid System

1

Gas supply issues

5

North-Central Flow Constraint

6

0% 10% 20% 30% Jan-13 Apr-13 Jul-13 Oct-13 Jan-14 Apr-14

Generator Outages 2013 - 2014

Unplanned Deration Planned

• Total generators outages

(plan and forced) averages at 17% for last 2 years.

• Highest outage rate was

29%, on 22 Jan 2014.

• We are operating at 30%

reserve margin now.

• Reserve Margin is expected

to drop to 25%

1000 2000 3000 4000 Jan-13 Apr-13 Jul-13 Oct-13 Jan-14 Apr-14 MW

Generator on Forced Outages 2013-2014

• Forced Outage in system can

reach up to 3800MW on certain days.

HIGH UNPLANNED GENERATOR OUTAGES

2,000 4,000 6,000 8,000 Jan-13 Apr-13 Jul-13 Oct-13 Jan-14 Apr-14

MW 900 MW

1800 MW

Yellow Warning

• 13th – 27th May 2013
• 13th Nov – 6th Dec 2013
• 20th – 24th Jan 2014

Orange Warning

• 6th – 8th May 2014
• 26th – 27th May 2014

Red Warning

• 7th May 2014

2300 MW Actual OR Minimum Operating Reserve OR target was reduced to 1800MW due to:-

• Demand increase
• To meet schedule outage requirements

LOW GENERATION OPERATING RESERVE

237 239 241 243 245 247 249 1-Sep 1-Dec 1-Mar 1-Jun

TMGR LAKE LEVEL

'1112 current level '1213

CHALLENGING WEATHER

135 137 139 141 143 145 147 1-Sep 1-Dec 1-Mar 1-Jun

KNYR LAKE LEVEL

'1112 Current Level '1213

• Current lake level at Kenyir is the

lowest for the last 14 years.

• Current water inflow in the

catchments area are below average.

• The year end target levels for

Kenyir and Temenggor revised due to impounding work for Hulu Trengganu project and the anticipated El-Nino impact.

• Available water resources must

be carefully utilized to ensure full capacity throughout the year and 2015.

• Water resources also must be

ensured available to meet the relevant agencies minimum discharge requirements.

WATER SUPPLY TO POWER STATIONS

• Raw water supply to power stations are

essential for the plant operation.

• All power station are listed as ‘sasaran

penting’, thus water supply will be given top priority by water suppliers.

• Station have identified the risk and

established mitigation actions if water supply is disrupted.

• Survival rate, 3 to 10 days.
• High risk states are N. Sembilan and

Selangor.

• Concentration of power stations

GAS SUPPLY

• 12 number of planned gas curtailments.
• 72 days with shortfall exceeding 400mmscfd.
• Critical shutdown planned in 2014
• June, 28 days of TTM shutdown during high demand period.
• August, 14 days of TCOT shutdown.

Kulim Lumut Kuala Berang Temerloh Bentong Gua Musang Kuala Lipis Jerantut Muadzam Shah Mentakab Kuala Pilah Segamat Mersing Kluang Kuah

• Sg. Petani

Dungun Taiping Teluk Intan Kuala Selangor Kuala Kubu Baru Banting Gemas Muar Batu Pahat Pontian Kechil Seri Iskandar Kampar Melaka Seremban Georgetown Kota Bharu Kuala Terengganu Ipoh Kuantan Shah Alam Kangar

JOHOR PAHANG MELAKA NEGERI SEMBILAN SELANGOR PERAK KEDAH PULAU PINANG KELANTAN TERENGGANU PERLIS WILAYAH PERSEKUTUAN

LANGKAWI

PAHLAWAN

Pasir Gudang

BERSIA KENERING TEMENGOR KENYIR SG PIAH UPPER SG PIAH LOWER JOR WOH ODAK CHENDEROH PERGAU

Johor Bahru

PRAI SEGARI CONNAUGHT BRIDGE SERDANG KAPAR POWERTEK PD POWER GENTING SANYEN TJPS YTL PASIR GUDANG PAKA YTL

Ayer Tawar Batu Gajah Papan Kuala Kangsar Bukit Tambun Junjung Gurun Bedong Kota Setar Chuping Bukit Tarek KL (N) KL (E) Hicom G KL (S) Salak Tinggi Melaka Kg Awah Skudai Telok Kalong Tanah Merah Yong Peng (N) Butterworth Bukit Tengah

GELUGOR JANAMANJUNG TTPC MELAKA

Gelang Patah Alor Setar

7498 MW

• 16,583 MW

MAXIMUM DEMAND (28/05/14)

• 7,498MW

CENTRAL AREA MAX. DEMAND

THREAT OF LOSS MAJOR TRANSMISSION CORRIDORS

Proposed network configuration during and after commissioning of JMJG U4 (Before Point A is ready)

JMJG500 BTRK500 U1 U3 U2 ATWR275 ATWR500 U4

L1 L2

 Split JMJG500 and ATWR500 with either 1400MW or 1700MW direct to BTRK

Transmission constraint with JMJG U4

Proposed network configuration during and after commissioning of JMJG U4 (After Point A is ready)

L1 L2

Point A

 Split JMJG500 with either 1400MW or 1700MW direct to BTRK

Transmission constraint with JMJG U4

E-ATTEND SCHEME

• The original 500kV LILO configuration has the risk of Out of Step and

voltage problems for contingency n-2 BTRK-JMJG/ATWR

• Incompletion of point A will further reduce system reliability where:
• Propose to split JMJG and ATWR with 1400MW or 1700MW

directly connected to BTRK

• n-1 of the circuit with 1700MW attached will possibly trigger UFLS
• Contingencies can cause overload on the parallel 275kV lines can be

handled by a Special Protection Scheme called E-ATTEND with enhanced functionality – to reduce generation at JMJG/SGRI and/or trip SGRI and/or load shedding in Central area

• E-ATTEND scheme recommends to include these functions:
• HVDC Run-back
• Direct Hydro Intertrip Scheme (DHIS)
• Event-based Load Shedding (at 49.5Hz)

DEMAND CONTROL IN MALAYSIAN GRID CODE

Operating Code No. 4 (OC4) governs the procedures to be followed by the GSO and Users to facilitate Demand Control

in the event that

insufficient generating capacity

is available to meet forecast or real-time Demand the possibility of frequency excursions

• utside the limits

given in the Planning Code.

Demand Control shall include but not limited to the following actions on load or demand:

• (1) Automatic load or demand shedding;
• Under frequency Load Shedding Scheme
• Under Voltage Load Shedding Scheme
• (2) Manual load or demand shedding; and
• Load Shed & Restore (LSR)
• ROTA Load shedding
• (3) Reduction of load through voltage reduction;

These provisions may be used by the GSO to prevent System thermal overloads

• r System voltage collapse on any part of the Grid.

25

YELLOW WARNING ORANGE WARNING RED WARNING

NOTIFICATION FOR DEMAND CONTROL

26

12000 13000 14000 15000 16000 17000 18000 19000 1-May 2-May 3-May 4-May 5-May 6-May 7-May 8-May 9-May 10-May 11-May 12-May MW

System Availability vs Maximum Demand

Genenator Availability Maximum Demand

JMJG U1 PLPS BLK JMAH U1 JMJG U2 JMJG U3 SRDG GT1 TJGS ST1C KLPP GT11 PDPS GT2 PKLG U2

• Multiple forced outages of generators since 2nd May 2014.
• Availability reduced from 18400MW to 15900MW.
• System survived on 6th May 2014 – Imported from EGAT and Singapore.
• Generation and demand unbalance very huge on 7th May 2014. GSO

resorted to load shed to protect the grid system.

GENERATION SHORTAGE TO MEET THE DEMAND

0800 0900 1000 1100 1200 1300 1400 1500 1600 1700

9:00 - 17:00

Steel Mills were requested to stop arcing in order to reduce demand.

0700 0600

@ 0524hrs

TJGS Blk 1 (240MW) tripped due to faulty control valve.

7th May 2014 morning, generation availability was already low due to previous day forced outage of JMJG U2 and U3. @ 0900hrs

started IMPORT from Singapore & Thailand.

@ 1238hrs

PKLG U2 (145MW) tripped due to cooling water pump failure.

@ 1450hrs

PKLG U1 (285MW) tripped due to cooling water pump failure.

@ 1345hrs

RED warning

was issued.

@ 1411hrs

ROTA was initiated and followed by EMLS which amounting to a total of 470MW load interruption.

15:35 - 17:20

Restoration of supply after PKLG U2 was back online @1521hrs. Red Warning was cancelled @1720hrs with Orange Warning reinstated.

SEQUENCE OF EVENT ON 7th MAY 2014