avr basic

1 6 9 17 24 26 28 31

(Resistance)

PR I R

(Inductance)

PX I X

2 (R) (X)

PR = I2R

PX = I2x

2 (I) VS VR (Equivalent Circuit) 1

1

VR = VS - IR - IX .{

{ 2

VR = VS - I(R - jX) .|

2 VR VS

S LVSI VR

R X

S (Source)L (Load)

IXIR

I VR

VS

3 () ( 22 33 ) 10%

1. (R)

2. (X) (Series Capacitor)

3. 2

3.1 1 3

4 3.2 (Power Factor)

3

4.

AVR

4

I1 I2S L2VS VR

R1 X1

VRAVR

R2 X2

L1

5 (VR) (VR)

5

6

Auto Transformer Auto Transformer

VP NP

VS NS

6

(VP) (VS)

(VP) (VS) 2

1. 2.

VP NP NS VS

..}

..~

S

S

P

PNV

NV =

P

SPS N

NVV =

7

7 Auto Transformer

Auto Transformer 3 1. (NMain )2. (NAux)3. (NTap)

NAux NTap NTap NTap NAux NMain NTap () Auto Transformer ( 7) 6

VP VSNMain

NTap

NAux

8NP = NMain + NAux + NTapNS = NMain + NAux

NMain + NAux + NTap NTap NTap NMain NMain + NAux Auto Transformer

..

..

AuxMain

S

TapAuxMain

p

NNNNNVV++ =

TapAuxMain

AuxMain(PS NNN

)NNVV ++=

9

Auto Transformer

8

4 1. (Sensing Device) (Instrument Transformer)

2. (Control Relay) (Voltage Regulating Relay)

SOURCE

LOAD

10

9 Voltage Regulating Relay Type MK30

3 - (Voltage Level) {

93 130 ( 22.5 22 33.8 33 2.5% ) 22 22000/110 22.5

VL

= 112.5 V

- (Bandwidth) } ( 275 22 412 33 )

V22000

110X22500VL =

11

0.6-6% Bandwidth Bandwidth 22 Bandwidth 1.5%

= 337.5 V

337.5

- (Time Delay) 1 10180 2 Linear (lin) Integrate (Int) 22.5 , Bandwidth 1.5%, Time Delay 180 Int 21.5

U|%| E|%| Bandwidth

V100

1.5X22500Bandwidth =

12

= 2.96

10 Time Delay Integrate (Int)

60 60

3. (Actuator) (Motor Drive Unit) ( 10 )

2.96

1.522.5

21.5)X100-(22.5

=%%E

U

%E%U

180

Time (s)

13

10 Motor Drive Unit Type MA9

{

|

} 21

~

30 1

4. (Tap Changer) (OLTC) 1 10 ( 10 ) 3 K ( 1 2) 1 21 22 23.1 - 17.6

{

|

}

~

14

1 23.1 21 17.6 ( 275 ) 23.1 33 34.6 - 26.4 ( 1 = 34.6 , 21 = 26.4 , 412 )

11

11 22 (VIN) 23.1 20.35 2.75 275 (10 = 2.75 ) 1 (VOUT) 23.1 20.35 10 23.1 K 1 K 2 ( 11) 1 ( 12- 21) 17.6 23.1 33 34.6 24.6 412

(NMain)

(NAux) (NTap)

11 10 9 8 7 6 5 4 3 2 1

KVIN

OLTC

AVR

VOUT

12

15

12 K 1

12 K 2AVR

VINVOUTNMain

NTap NAux

AVR

VINVOUT

NMain

NTap NAux

16

3 ( 1 2 )

13

14

5 5 6 6

17

Auto Transformer

15

1. Main Tank 2 (OLTC)

2. Conservator Tank 2 Main Tank Main Tank OLTC Main Tank

3. Radiator Main Tank Main Tank

4. Air Breather - 2 Conservator Tank ( OLTC)

Main Tank

Conservator Tank

Radiator

AirBreather

OLTC

18

- Conservator Tank () - (Rubber Black) Air Breather

16

Main TankOLTC

Conservator Tank

Buchholz Relay Oil Flow Relay

Pressure Relief

Oil Level Guage

19

1. Over current Relay OLTC 2

1.1 OLTC1.2 OLTC

2 Over current Relay

() 2. Buchholz Relay Main Tank Conservator Tank

Main Tank Conservator Tank Main Tank

17 Buchholz Relay

Main Tank Conservator Tank 2 1 1.4 (0.15) / ( Main Tank) 2 Main Tank Buchholz Relay Buchholz Relay 450 (20) 1 Main Tank

2

1

Alarm Trip

Main Tank Conservator Tank

20

2 Buchholz Relay ( 2 1 )

18 Buchholz Relay

3. Oil Flow Relay OLTC Conservator Tank OLTC Conservator Tank Buchholz Relay 1.2 (0.1) / Oil Flow Relay Oil Flow Relay Protective Relay Tap Changer Protection

21

19 Oil Flow Relay

4. Pressure Relief Device Explostion Vent Main Tank OLTC Tank Pressure Relief Device

20 Pressure Relief Device

TANK

22

Tank Tank ( 0.7 (0.07) /) Pressure Relief Device Pressure Relief Device

21 Pressure Relief Device

Pressure Relief Device Main Tank OLTC OLTC

5. Temperature Device Temperature Guage ( 22) () () Temperature Device 2

- (Alarm) 80 85 OC- (Trip) 85 - 90 OC Temperature Device

()

75 95 OC () 85 105 OC ()

23

22 Temperature Gauge

6. Oil Level Guage 2 OLTC Main Tank Conservator Tank

23 Oil Level Gauge

24

() Flag Flag 2

1. Buchholz tripping 1. Buchholz warning2. Tap changer protection 2. Transformer liquid level max3. Temperature tripping 3. Transformer liquid level min4. Explosion vent 4. Tap changer liquid level max5. Over current relay trip 5. Tap changer liquid level min

6. Temperature warning

Flag Flag 1-4 5 1

24

Flag

,

25

(Over voltage relay) . 10% ( 24 kV 22 kV 36 kV 33 kV) Over voltage relay 4

25 Over voltage relay

(Power supply transformer) 5400 kVA 3 6600-380/220 V

26

26

.

27

Source LoadR

{|}

~

}

~

27

28

{ | } ~

1

{

|

}~

} ~

28

1. | 2. } ~ 3.

1. - } ~- /()

- - /

2. 2.1

- AUTO OFF- 1- OFF - - - |- } ~

Source LoadR

{|

~

}

29

2.2 - 1

OFF OFF

-

- } ~- ( Non-reclosing)- |- - - - ON - OFF AUTO- AUTO MANUAL AUTO

3. - 1- ( Non-reclosing)- |-

30

1.

2. 3.

4.

5. 1

6. 2 -

7.

.

1. (A) (MVA) 22 kV 33 kV

5.7 150 -8 200 -12 300 20016 400 -18 - 300

2.

PAUWELS - TRAFO OSAKA

TRAFO - UNION ELEKTRO - BAU

TIRA - THAI EKARAT

THAI - TRAFO CHAREAN - CHAI

EKARAT

TYPE MK20

TYPE MK20

1. 2. (Voltage Level) 3. (Voltage Level) 4. (Time Delay)5. ( linear integrade) 6. (Bandwidth)7. ( )8. Under Voltage9. (Auto , Manual Off)

10. ..11. 12. 13. ..14.

TYPE MK30

TYPE MK20

1. (Auto , Manual Off)2. 3. 4. 5. 6. 7. (Time Delay)8. ( linear integrade)9. (Bandwidth)10. (Voltage Level)11. (Local Remote)12. Under Voltage13. Over Voltage14. Over Current15. 16. 17. 18. 19. (V kV)20. 21.

. ... .1. .......2. ..... ......3. ........4. ... Type .. ...5. Type..6. ..Type

6.1 (Voltage Level)6.2 (bandwidth)...6.3 (Time Delay)..

7. (Alarm). ( Trip). ...

8. 8.1 Main Tank ..(, , )8.2 OLTC...(, , )

1. . 2. 1 () 3. 1 () 4. . 5. 1 () .(, ) ....6. 1 () .(, ) .

... .. A .. . ... Bandwidth.. Voltage Level Time Delay ( ) Linear ( ) Integreate

1. ( ) ( ) ( ) / 2. ( ) ( ) 3. ( ) ( )

4. 4.1 ............. 4.2 .............. 5. 5.1 Main Tank ( ) ( ) ( )

OLTC ( ) ( ) ( ) 5.2 ( ) ( ) ..5.3 ( ) ( ) .5.4 ( ) ( ) .5.5 ( ) ( ) .

6. 6.1 ( ) ( ) 6.2 ( ) ( ) 6.3 ( ) ( )

7. 7.1 .....7.2 .....7.3 ..

8. Over Voltage Relay8.1 .....8.2 .....

8.3 ...

(.) ..

avr basic

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