Quick Reference: DSO Operational Data (June 2021)

DSO

OPERATIONAL DATA

QUICK

REFERENCE HANDBOOK

Y2021

Distribution System Operator
Tenaga Nasional Berhad
Edition: 1/2021
June 2021



CONTENTS

1. Maximum Demands All information is taken
based on information that
2. Summary of Electrical Substation has been registered in the
DSO SCADA Master System
3. Numbers of Electrical Substation in on 8 June 2021 and Grid
MRCC System Operator (GSO)
website.
4. Numbers of Electrical Substation in
SRCC

5. Numbers of Electrical Substation in
NERCC

6. Distribution Cable Network Data

7. PSI SCADA Master System- Common
Abbreviation

8. PSI SCADA Master System- Common
Symbol

TNB HIGHEST MAXIMUM DEMAND FROM

Y2016-Y2020

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

18,566 MW 18,808 MW

18 APR 2019 10 MAR 2020

17,790 MW 18,338 MW

23 OCT 2017 15 AUG 2018

17,788 MW

20 APR 2016

16,822 MW

21 APR 2015

2015 2016 2017 2018 2019 2020

Peak demand was Maximum demand
achieved on
is the highest level of
10th March 2020 electrical demand
monitored in a particular period
at 18,808MW usually for a month period.

(https://www.tnb.com.my/commercial-industrial/maximum-
demand)

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

Distribution network PMU
electrical substation
control by Distribution 464
System Operator for the
whole Peninsular substations
Malaysia.
PPU

1,004

substations

SSU

609

substations

PE

85,068

substations

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Metro Regional Control Centre. (MRCC) Nos of Substation that has
(Substation data displayed is as of 8 June 2021) Txf based on voltage level

PMU 129 236

TX VOLTAGE LEVEL SUBSTATION NUMBER PMUs substations SSUs
(KV)
104
132/33 55
20
132/11

33/11

PPU 421

TX VOLTAGE LEVEL SUBSTATION NUMBER PPUs 27,737
(KV) 405
PEs
33/11

VOLTAGE SSU SSU CONS Summary: Number of electrical
LEVEL (KV) 28 substation in the Metro Regional
SSU Control Centre (MRCC).
33 208

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
27,737 647 1,806 25,284

SECONDARY SUBSTATION EQUIPED WITH SCADA

TOTAL PE FTU RTU
8,235 3,968 4,267

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Southern Regional Control Centre. (SRCC)

(Substation data displayed is as of 8 June 2021)

PMU

TX VOLTAGE LEVEL SUBSTATION NUMBER 209 216
(KV)
75 PMUs substations SSUs
132/33 19
132/22 133
132/11 1
33/22 8
33/11 1
22/11

PPU 215

TX VOLTAGE LEVEL SUBSTATION NUMBER PPUs 29,089
(KV)
33/22 1 PEs
33/11 186
22/11 Summary: Number of electrical
22/6.6 5 substation in the Southern Regional
11/33 17 Control Centre (SRCC).
11/6.6 1
1

SSU

VOLTAGE SSU SSU CONS
LEVEL (KV) 194 22

33

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
29,089 1,230 698 27,161

SECONDARY SUBSTATION EQUIPED WITH SCADA

TOTAL PE FTU RTU
7,510 4,278 3,232

DISTRIBUTION NETWORK ELECTRICAL SUBSTATION

Northern Eastern Regional Control Centre (NERCC)

(Substation data displayed is as of 8 June 2021)

PMU

TX VOLTAGE LEVEL SUBSTATION NUMBER 126 157
(KV)
2 PMUs SSUs
275/33 84
62 substations
132/33 26
2
132/11

33/11

11/33

PPU 368 28,242

TX VOLTAGE LEVEL SUBSTATION NUMBER PPUs PEs
(KV) 366

33/11

SSU

VOLTAGE SSU SSU CONS Summary: Number of electrical
LEVEL (KV)

33 158 3 substation in the Northern Eastern
Regional Control Centre (NERCC).

SECONDARY SUBSTATION (PE)

TOTAL PE SSU SS TS
28,242 300 1,489 26,453

SECONDARY SUBSTATION EQUIPED WITH SCADA

TOTAL PE FTU RTU
6,814 3,228 3,586

DISTRIBUTION CABLE NETWORK DATA

(As registered in PSI SCADA Master System)

The following cable 173,702 km
information is taken
from PSI SCADA Master Total Cable Length
System, registered and
maintained by Section 107,450
of SCADA Network
Management. The number of sections
throughout the DSO

56,651 km / 34,835
sections

MRCC

55,190 km / 36,059
sections

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NERCC

DISTRIBUTION CABLE NETWORK DATA

Cable data displayed is as of 8 June 2021

MRCC SRCC NERCC

CABLE TYPE # section sum length (km) # section sum length # section sum length
2 (km) 0 (km)
050ABC11 0 0
070ABC11 7 8.7 0.4 0
070ABC33 3 14.01
095ABC11 7 12.35 98 247.64 415 688.64
150ABC11 28 47.54
150ABC33 104 285.05 2 22 59 78.29
185ABC11 1 4.5
240ABC11 164 377.66 12 15.9 30 59.43
A11OH150 0 0
A11OH150ABC 0 0 262 630.43 1064 3653.88
A11OH240 32 58.22
A33OH185 505 3921.94 248 433.2 622 2309.69
A33OH200P 0 0
A33OH300B 0 0 6 5.44 33 40.11
A33OH300P 0 0
150SIL33 0 0 94 273.56 802 1439.09
C11SM185 0 0
C11OH0225 0 0 11 18.66 150 292.01
C33OH16 0 0
025_PILC 0 0 59 154.5 00
035_PILC 0 0
070_PILC 14 24.23 60 191.81 64 93.44
095_PILC 0 0
120_PILC 34 40.27 23 34.28 49 227.67
150_PILC 15 10.22
185_PILC 1135 701.55 00 26 70.27
300_PILC 231 143.55
400_PILC 0 0 00 17 83.56
20PILC6_6 0 0
70PILC6_6 0 0 00 2 2.22
C11UG185_PILC 0 0
C11UG225_PILC 0 0 392 477.95 910 1349.23
C11UG300_PILC 0 0
33UGOIL400 5 6.22 4 5.98 655 474.41
33UGOIL500 2 12.4
70XLPE6_6 0 0 54 29.78 00
A11UG070 29 17.64
A11UG095X 1 0.07 00 24 26.45
A11UG120 19 14.13
A11UG150X 941 894.82 102 187.78 103 138
A11UG185 884 758.96
A11UG240X 27338 38994.92 3 1.85 28 33.89
A11UG240TRI 52 49.91
A11UG300 133 138.21 460 760.76 1085 2400.57
A11UG500X 0 0
A33UG300X 3 4.4 16 19.55 47 84.61
A33UG400 0 0
A33UG630X 1811 4859.16 911 2295.87 1576 2545.19
A33UG630X(3x) 0 0
C11UG300 0 0 320 339.35 934 856.22
C11UG500X 1334 5243.1
C33UG150X 0 0 5472 6208.12 4379 5867.09

C33UG240_3CORE 3 7.35 987 963.24 790 744.59

C33UG25_1CORE 0 0 312 252.99 2 2.3
300OH132ACSR 0 0
2 1.8 00

5 5.65 00

4 4.96 3 1.1

3 0.95 00

4 3.9 00

00 4 14.6

3 27.96 4 11.86

7 10.7 00

28 52.07 49 74.57

3 4.9 15 20.44

18 12.38 47 63.51

5910 8089.87 5448 11180.36

201 220.79 143 166.52

17625 26452.05 15110 22571.33

00 00

38 34.05 31 35.08

668 1835.02 617 1066.56

00 9 19.44

2 6.73 5 8.8

824 2455.84 1073 2814.2

00 1 0.9

00 2 1.76

802 2388.52 85 114.12

00 5 22.84

2 10.9 29 51

00 6 19.82

00 4 41.29

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.



Issued by: Address:
DMS
SCADA Network Management Distribution System Operator, TNB,
MSRCC, Ground Floor, TNB Transmission, Building,129,
In collaboration with: Jalan Bangsar, PO BOX 11050,
Operation Support/DOMS 59200 Kuala Lumpur, Malaysia
Compliance and Technical Support

# Edition 1/2021 was released based on operating data dated June 8, 2021
# For use in DSO only