Quick Reference: DSO Operational Data (Jan 2022)

DSO

OPERATIONAL DATA

QUICK

REFERENCE HANDBOOK

Y2022

Distribution System Operator
Tenaga Nasional Berhad
Edition: 1/2022
January 2022



CONTENTS All information is taken
based on information that
1. Maximum Demands has been registered in the
DSO SCADA Master System
2. Renewable Energy on 31 December 2021 and
Grid System Operator
3. Summary of Electrical Substation (GSO) website.

4. Numbers of Electrical Substation in
MRCC

5. Numbers of Electrical Substation in
SRCC

6. Numbers of Electrical Substation in
NERCC

7. Distribution Cable Network Data

8. PSI SCADA Master System- Common
Abbreviation

9. PSI SCADA Master System- Common
Symbol

10. ISMS IEC 27001:2013

TNB HIGHEST MAXIMUM DEMAND FROM

Y2016-Y2021

The following information is taken from Grid System Operator website/
System Demand Profile for Peninsular Malaysia @ https://www.gso.org.my/
SystemData/SystemDemand.aspx

18,808 MW
18,566 MW 10 MAR 2020 18,585 MW
18,338 MW 18 APR 2019 13 OCT 2021

17,790 MW 15 AUG 2018
17,788 MW 23 OCT 2017

20 APR 2016

16,822 MW

21 APR 2015

2015 2016 2017 2018 2019 2020 2021

Peak demand for Maximum demand

Y2021 is the highest level of
electrical demand
was achieved on monitored in a particular period
13rd October 2021 usually for a month period.

at 18,585MW (https://www.tnb.com.my/commercial-industrial/maximum-
demand)

RENEWABLE ENERGY IN TNB
DISTRIBUTION NETWORK (MEDIUM VOLTAGE)

Distribution network Renewable
electrical substation Energy
control by Distribution Installed
System Operator for the Capacity
whole Peninsular
Malaysia. 256

plants

Installed capacity for

Clean Energy

in
Distribution Network is

690.62 MW

Data as per 31st December 2021

RENEWABLE ENERGY IN TNB

DISTRIBUTION NETWORK (MEDIUM VOLTAGE)

*Source from Wan Norefendi. He now serves as a Senior TOTAL INSTALLED
Engineer RE/MicroGrid/NEDA. Expert on RE at DSO. CAPACITY

NUMBERS

Solar 154 432.87 MW

Hidro 34 108.05 MW

Biogas 61 99.40 MW

Biomas 7 50.3 MW

RO STATE SOLAR BIOMASS BIOGAS HYDRO SCADA CAPACITY
RO1 CONNECTION (MW)
JOHOR 8 11kV 14 0
RO2 N. SEMBILAN 19 0 5 0 22 37.5228
TOTAL 6 1 0 0 24 52.856
MELAKA 7 0 11 12 6 13.7526
RO1 PAHANG 34 0 8 1 23 76.536
SELANGOR 1 3 0 0 42 59.2157
RO2 WP K. LUMPUR 0 0 0 0 1
TOTAL WP PUTRAJAYA 9 0 0 0 0 1
10 0 3 3 9 0
PERLIS 7 0 1 0 13 18.5
KEDAH 19 0 14 8 8 15.916
P. PINANG 5 1 0 2 30 8.2
PERAK 5 0 1 4 5 64.991
TERENGGANU 130 0 57 30 7 7.344
KELANTAN 5 190 12.731
3 0 0 368.5651
JOHOR 1 33kV 0 0 3
N. SEMBILAN 2 0 0 0 1 63.98
4 0 0 0 2 8
MELAKA 3 0 4 0 5 8
PAHANG 0 1 0 0 7
SELANGOR 0 0 0 0 0 22.52
WP K. LUMPUR 0 0 0 0 0 33.18
WP PUTRAJAYA 4 0 0 1 0
1 0 0 0 6 0
PERLIS 2 1 0 1 1 0
KEDAH 4 0 0 1 3 0
P. PINANG 0 0 0 1 5 86.89
PERAK 24 0 4 4 1 20
TERENGGANU 0 34 25.98
KELANTAN 2 33.5
20
322.05

DISTRIBUTION NETWORK ELECTRICAL
SUBSTATION (As registered in PSI SCADA Master System)

Distribution network PMU
electrical substation
control by Distribution 459
System Operator for the
whole Peninsular substations
Malaysia.
PPU

1,026

substations

SSU

533

substations

PE

85,619

substations

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Metro Regional Control Centre. (MRCC)

(Substation data displayed is as of 31 December 2021)

128 432
PPU
PMU

substations

SSU 216 27,952 PE

SSU (PRIMARY)

VOLTAGE SSU SSU CONS Summary: Number of electrical
LEVEL (KV) 208 8 substation in the Metro Regional
Control Centre (MRCC).
33

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
27,952 782 1,725 25,445

SECONDARY SUBSTATION EQUIPPED WITH SCADA

TOTAL PE FTU RTU
8,826 4,323 4,503

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Metro Regional Control Centre. (MRCC)

(Substation data displayed by state)

SUMMARY TABLE OF SUBSTATIONS BY STATE

STATE WILAYAH PERSEKUTUAN SELANGOR
PMU KUALA LUMPUR 84
PMU

44

TOTAL 128
PPU
PPU 258
174

TOTAL 432
SSU
SSU 33KV 133
76

SSU CONS 3 4

TOTAL 79 137
SSU SECONDARY SUBSTATION 499

283

SS 444 1,281

TS 7,212 18,233

TOTAL 7,939 20,013

SECONDARY SUBSTATION EQUIPPED WITH SCADA FACILITY

FTU 1,822 2,501

RTU 2,087 2,416

TOTAL 3,909 4,917

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Southern Regional Control Centre. (SRCC)

(Substation data displayed is as of 31 December 2021)

205 222
PPU
PMU

substations

SSU 159 PE

29,256

SSU (PRIMARY)

VOLTAGE SSU SSU CONS Summary: Number of electrical
LEVEL (KV) 147 13 substation in the Southern Regional
Control Centre (SRCC).
33

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
29,256 1,389 622 27,245

SECONDARY SUBSTATION EQUIPPED WITH SCADA

TOTAL PE FTU RTU
7,672 4,358 3,314

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Southern Regional Control Centre. (SRCC)

(Substation data displayed is as of 31 December 2021)

SUMMARY TABLE OF SUBSTATIONS BY STATE

STATE NEGERI SEMBILAN MELAKA JOHOR PAHANG
PMU 36 PMU 99 43
27
67
TOTAL 205
PPU 22
15 PPU 119 0
21 22

TOTAL 222 180
SSU SSU 33KV 283
19 12 92 5,038
5,501
SSU CONS 4 0 10
738
TOTAL 23 12 102 466
SSU SECONDARY SUBSTATION 1,204

394 381 434

SS 88 17 234

TS 4,366 3,068 14,773

TOTAL 4,848 3,467 15,441
FTU
SECONDARY SUBSTATION EQUIPPED WITH SCADA FACILITY

762 633 2,225

RTU 566 550 1,732

TOTAL 1,328 1,183 3,957

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Northern Eastern Regional Control Centre (NERCC)

(Substation data displayed is as of 31 December 2021)

126 372
PPU
PMU

substations

SSU 158 PE

28,411

SSU (PRIMARY)

VOLTAGE SSU SSU CONS Summary: Number of electrical
LEVEL (KV) 155 3 substation in the Northern Eastern
Regional Control Centre (NERCC).
33

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
28,411 370 1,617 26,424

SECONDARY SUBSTATION EQUIPPED WITH SCADA

TOTAL PE FTU RTU
7,534 3,391 4,143

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Northern Eastern Regional Control Centre (NERCC)

(Substation data displayed is as of 31 December 2021)

SUMMARY TABLE OF SUBSTATIONS BY STATE

STATE PULAU PERAK PERLIS KEDAH KELANTAN TERENGGANU
PINANG PMU
PMU
TOTAL 27 41 4 24 12 18

PPU 126 52
TOTAL PPU
78 92 8 69 73
SSU
SSU CONS 372 7 12
SSU 33KV
TOTAL 71 41 0 24

SSU 30000 0
SS
TS 74 41 0 24 7 12
TOTAL 21 92
SECONDARY SUBSTATION
FTU
RTU 2 243 6 14
TOTAL
269 699 42 310 241 156

5,937 9,745 746 5,560 3,420 2,807

6,208 10,687 794 5,884 3,682 3,055
324
SECONDARY SUBSTATION EQUIPPED WITH SCADA FACILITY

888 1,114 30 815 220

1,447 1,012 116 831 404 333

2,335 2,126 146 1,646 624 657

DISTRIBUTION CABLE NETWORK DATA

(As registered in PSI SCADA Master System)

The following cable 179,403 km
information is taken
from PSI SCADA Master Total Cable Length
System, registered and
maintained by Section 108,278
of SCADA Network
Management. The number of sections
throughout the DSO

61,974 km / 35,335
sections

MRCC

55,410 km / 36,306
sections

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NERCC

DISTRIBUTION CABLE NETWORK DATA

Cable data displayed is as of 31 December 2021

MRCC SRCC NERCC

CABLE TYPE # section sum length # section sum length # section sum length
(km) (km) (km)
050ABC11
070ABC11 00 2 0.4 00
070ABC33
095ABC11 7 8.7 96 236.64 407 670.87
150ABC11
185ABC11 3 14.01 2 22 59 78.29
150ABC33
240ABC11 7 12.35 12 15.9 30 59.43
150SIL33
C11SM185 28 47.54 263 632.79 1073 3687.01
A11OH150
A11OH240 1 4.5 7 5.59 33 40.11
A33OH185
A33OH200P 104 285.05 277 450.07 630 2336.4
A33OH300B
A33OH300P 163 376.51 100 294.05 821 1488.63
C11OH0225
C33OH16 00 397 499.98 907 1344.03
300OH132ACSR
33UGOIL400 00 4 5.98 655 474.41
33UGOIL500
025_PILC 00 70 173.26 150 300.66
035_PILC
070_PILC 32 58.22 60 191.81 64 93.44
095_PILC
120_PILC 505 3921.94 25 39.3 49 227.67
150_PILC
185_PILC 00 00 26 70.27
300_PILC
400_PILC 00 00 17 83.56
20PILC6_6
70PILC6_6 00 00 2 2.22
C11UG185_PILC
C11UG225_PILC 00 54 29.78 00
C11UG300_PILC
70XLPE6_6 00 00 24 26.45
A11UG070
A11UG095X 00 00 4 41.29
A11UG120
A11UG150X 4 4.22 00 4 14.6
A11UG185
A11UG240TRI 2 12.4 3 27.96 4 11.86
A11UG240X
A11UG300 00 102 187.78 103 138.82
A11UG500X
A33UG300X 00 3 1.85 28 33.89
A33UG400
A33UG630X 15 24.58 449 732.29 1066 2366.86
A33UG630X(3x)
C11UG500X 00 16 19.55 47 84.61
C33UG150X
C33UG25_1CORE 34 40.27 907 2291.81 1558 2530.44
C33UG240_3CORE
16 12.22 317 338.48 933 855.52

1129 696.97 5443 6155.81 4357 5836.52

230 143.49 976 947.92 782 738.61

00 308 250.71 2 2.3

00 2 1.8 00

00 5 5.65 00

00 4 4.96 3 1.1

00 3 0.95 00

00 4 3.9 2 1.76

00 7 10.7 00

29 17.64 27 47.37 48 71.92

1 0.07 3 4.9 15 20.44

19 14.13 18 12.38 47 63.51

944 895.26 5944 8146.25 5465 11211.35

874 747.44 200 220.19 142 164.72

52 49.91 00 00

27755 44165.92 17796 26462.31 15190 22638.86

130 135.22 38 34.05 31 35.08

00 702 1906.3 629 1084.35

3 4.4 00 10 19.47

00 2 6.73 5 8.8

1804 4827.08 861 2611.17 1089 2849.02

00 00 1 0.9

1441 5447.07 795 2368.51 85 114.64

00 00 5 22.84

00 00 6 19.82

3 7.35 2 10.9 29 51

DSO SCADA MASTER SYSTEM

DSO manage to

Control and Monitoring of
Distribution Network
Infrastructures at

Peninsular Malaysia

through PSI SCADA
Master System.

SCADA Master System

Common Abbreviation

No Abbreviation Description

1 ELEC_NET Electrical network

2 TEO Technological operation (Operate)

3 TS Transformer substation

4 SS Station Switch

5 MF Medium voltage feeder

6 OF Outgoing feeder

7 TXF Transformer feeder

8 LBS Load break switch

9 CBM Circuit breaker medium feeder

10 LTF Low voltage transformer feeder

11 PS Primary Substation

12 MBB Medium voltage busbar

13 BB Busbar

14 BS Bulk supply

15 MV Measured value

16 OW Operator Workplace

17 PIC Picture

18 BB1 Busbar Left

19 BB2 Busbar Right

20 TOW Tower for medium voltage

21 mys Malaysia Southern

22 mym Malaysia Metro

23 myne Malaysia Northern Eastern

24 AFOR Automated Feeder Optimisation and Reconfiguration

25 FLISR Fault, Locate, Isolation and Service Restoration

SCADA Master System

Symbols commonly seen in the SCADA Master System

No Symbol Description

1 Circuit breaker : Travel

2 Circuit breaker : Invalid

3 VCB : Travel

4 VCB : Invalid

5 RMU (LBS Type) : Travel
6 RMU ( LBS Type) : Invalid
7 Measure value not updated
8 Measure value invalid
9 Red circle : Not in normal position
10 Circuit breaker in CLOSE position
11 Circuit breaker in OPEN position

SCADA Master System

Symbols commonly seen in the SCADA Master System

No Symbol Description

12 Yellow square - Normal Off-Point (NOP)

13 Note ( Tie with equipment)

14 Temporary free note (Not tie with any elements)

15 Manual update with inhibit

16 Manual update without inhibit

17 Substitute value

18 Alarm processing disabled

19 Inhibit

20 Upper or Lower Limit value setting changed from
default setting

21 Red colour background- Upper limit warning

22 Orange colour background- Lower limit warning

Green colour background- Discrepancy between
23 estimator calculation and scada measure value

reading.

INFORMATION SECURITY MANAGEMENT
SYSTEM (ISO/IEC 27001:2013)

DSOis the first Regional
organization
in Distribution OPERATION 1
Network that first certified
is certified ISO/IEC Dec 2013
27001: 2013 Information
Security Management Regional
System.
OPERATION 2
first certified
Oct 2015

The implementation of
ISMS in DSO is managed by

SCADA Network
Management.

INFORMATION SECURITY MANAGEMENT SYSTEM
(ISO/IEC 27001:2013)
DSO ISMS Team Members

How to Implement ISMS in DSO

*Source from Yang Hajarul Aira, Central Working Group Committee Members ISMS (DN), Tenaga Nasional Berhad.
She now serves as a Senior Engineer Master System/Facility Management NERCC.

PHYSICAL SECURITY ZONE
(PSZ)

IDENTIFIED AREA THAT LOCATE ALL
THE CYBER ASSETS



Issued by: Address:

DMS Distribution System Operator, TNB,
SCADA Network Management, MSRCC, Ground Floor, TNB Transmission, Building,129,
Distribution System Operator. Jalan Bangsar, PO BOX 11050,
59200 Kuala Lumpur, Malaysia

# Edition 1/2022 was released based on operating data dated 7 January 2022
# For use in DSO only