Electrical system design : RMUTL 1

2

Electrical system design : RMUTL 2

2.1 - 10-20 kV

-

-

-

-

-

Electrical system design : RMUTL 3

2.2 2.1

10-20 kV

230 kV

230 kV

230 kV 69 kV

69 kV

24 kV

24 kV 416/240 V

24 kV 416 / 240 kV

69 kV 24 kV

2.1 Electrical system design : RMUTL 4

1) ( Generating System )

2) ( Transmission System )

Electrical system design : RMUTL 5

3) ( Distribution System )

4) ( Utilization System )

Electrical system design : RMUTL 6

2.3

3

- ( . )

Electricity Generating Authority of Thailand ( EGAT. )

- ( . )

Metropolitan Electricity Authority ( MEA. )

- ( . )

Provincial Electricity Authority ( PEA. )

Electrical system design : RMUTL 7

2.4

2

1. ( Independent PowerProducer IPP )

2. ( Small Power Producer SPP ) Electrical system design : RMUTL 8

1) -

-

- 5

Electrical system design : RMUTL 9

2) -

- 6-8

- , ,

3) - 15

-

-

Electrical system design : RMUTL 10

4)

-

-

Electrical system design : RMUTL 11

-

-

- ( Overhead Aerial Line )

- 4 500 kV 3 3 50 Hz

230 kV 3 3 50 Hz

115 kV 3 3 50 Hz69 kV 3 3 50 Hz

Electrical system design : RMUTL 12

2.5 3

- - -

( Subtransmission System )- 230 kV- 115 kV- 69 kV

Electrical system design : RMUTL 13

( Distribution System )

- 69 kV 115 kV 24 kV

12 kV

- 69 kV 115 kV 2

- ( Power Transformer )

2-4

-

8 MVA 12 kV

15 MVA 24 kV

. 12 kV 24 kV

24 kV Electrical system design : RMUTL 14

24 kV

69 kV , 1 69 kV , 2

Station Service 24 kV

(ONAN/ONAF1/ONAF2)

HV CB

36/48/60 MVA

69 kV/24 kV

HV CBTie CB

69 kV/24 kV

36/48/60 MVA (ONAN/ONAF1/ONAF2)

HV CB HV CB

2.2 .

Electrical system design : RMUTL 15

( Utilization System )

- 24 kV 12 kV 416/240 V 3 4

12 kV 24 kV

416 V

240 V

416 V

N

C

B

416 V

A

240 V

240 V

2.3 .

Electrical system design : RMUTL 16

2.6

1)

-

-

-

Electrical system design : RMUTL 17

2)

- 230 kV, 115 kV 69 kV

-

3)

-

4)

- 100 kW

Electrical system design : RMUTL 18

1) 22 kV Conventional Solidly

Grounded System

- - 3 3 3 4

3 3

1 2

22 kV

22 kV 22 kV

22 kV

C

B

A

2.4 22 kV Conventional Solidly Grounded System

Electrical system design : RMUTL 19

2) 33 kV Multigrounded System WithOverhead Ground Wire

-

-

3 4

C19 kV

1 2

Overhead Ground Wire

33 kV

A

33 kV

33kV

B

N

2.5 33 kV Multigrounded System With Overhead Ground WireElectrical system design : RMUTL 20

( Overhead Aerial System )

2 - Radial Line

4

1

.

2

3

115 kV/22 kV

22 kV/400-230 V

2.6 Radial Line

Electrical system design : RMUTL 21

- Tie Line

.

.

B

.

.

A

2.7 Tie Line Electrical system design : RMUTL 22

1) 1

1 2 230 V

1 3 460/230 V

1

230 V

230 V

230 V

460 V

1 2

1 3

1

2.8 1

Electrical system design : RMUTL 23

2) 3 4

- 400/230 V

3

22 kV

33 kV

400 V

400 V

230 V

230 V

230 V400 V

N

B

C

A

3 4

2.9 3

Electrical system design : RMUTL 24

2.7

300 kVA (Low Voltage)

(Medium Voltage)

(High Voltage) (Substation)

Electrical system design : RMUTL 25

1) 220 V 1 2

- 5 ( 15A ) , 220 V

- 15 ( 45A ) , 220 V

- 30 ( 100A ), 220 V- 50 ( 150A ), 220 V

Electrical system design : RMUTL 26

()

2) 380/220 V 3 4

- 15 ( 45A ) , 380 V

- 30 ( 100A ) , 380 V

- 50 ( 150A ) , 380 V

- 200 A , 380 V- 400 A , 380 V

Electrical system design : RMUTL 27

()

3) 12 kV 3 3

15A ( 300 kVA )

750 A ( 15000 kVA )

4) 24 kV 3 3

10A ( 400 kVA )625 A ( 25000 kVA )

Electrical system design : RMUTL 28

1)

Wh

2.10

Electrical system design : RMUTL 29

2) -

-

-

Electrical system design : RMUTL 30

CT

VT

Wh

LA

LA

2.11

Electrical system design : RMUTL 31

CT

VT

Wh

LA

2.12 Electrical system design : RMUTL 32

CT

24 kV Gas-Insulated RMU

12/20 kV 240 mm

Wh

2

VT&

2.13

Electrical system design : RMUTL 33

CT

24 kV Gas-Insulated RMU

12/20 kV 240 mm

Wh

2

VT&

12/24 kV 24 kV

2.14

Electrical system design : RMUTL 34

CT

24 kV Gas-Insulated RMU

12/20 kV 240 mm

Wh

2

VT&

12/24 kV 24 kV

2.15

Electrical system design : RMUTL 35

2.8 ( Distribution Circuit Arrangements ) 5

1. Radial System

2. Primary-Selective System

3. Secondary-Selective System

4. Secondary Spot Network System

5. Looped Primary System

Electrical system design : RMUTL 36

Radial System

-

-

LVCB

LV MV

Fuse

TR

LVCB

LV = Low VoltageMV = Medium VoltageTR = TransformerMDB = Main Distribution Board

MDB MDB

2.16 Radial Circuit

Electrical system design : RMUTL 37

LVCB

TR1

Fuse

LVCB

TR2

Fuse

LVCB

TR3

Fuse

CB

MVMV

CB

LVCB

TR3

Fuse

LVCB

TR2

Fuse

LVCB

TR1

Fuse

CB

CB = Circuit Breaker ( )LVCB =

( ) ( )

2.17 Radial Circuit

Electrical system design : RMUTL 38

Primary-Selective System-

2.18 Primary Selective

LVCB

TR1

CB

MV

Fuse

TR2

LVCB

CB CB

FuseFuse Fuse

Electrical system design : RMUTL 39

Secondary Selective System-

-

2.19 Secondary Selective

Normally Open

Service Bus

TR1

Fuse

MV

CB

Fuse

LVCB

Primary

TR2

LVCB

Electrical system design : RMUTL 40

4

1.

2. AirForced Cooling 30-40 %

Electrical system design : RMUTL 41

3.

4. ( Overload )

Electrical system design : RMUTL 42

Normally

TR1Fuse

MV

CB

LVCB

CB

Open

TR2

LVCB

FuseCB

2.20 Secondary - Selective

Electrical system design : RMUTL 43

Secondary Spot Network System

-

-

- (Network Protection)

Circuit BreakerPrimary Switch or

Network Protector

CB

MV MV

Fuse

TR1

Fuse

TR2

CB

2.21 Secondary Spot Network

Electrical system design : RMUTL 44

Looped Primary System

- Close Loop- Open Loop

Isolating Switches

MV

CB

CB

2.22 Close Looped Primary

Electrical system design : RMUTL 45

RMU RMU RMU RMU

CB CB

CB

MV

TR 1 TR 2 TR 3 TR 4

2.23 Open Looped Primary

Electrical system design : RMUTL 46