Automatic synch of gen

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1. Automatic
Synchronizing of
Generators

Application

2. Synchronizing

An attempt to connect two
alternating currents (ac)
machines or systems with the
following restrictions:
— Frequency difference (AF)
— Voltage difference (AV)

— Phase angle difference (AQ)

3. Typical Sine Wave

4. Line or Source
Voltage

Va

5. BECKWITH ELECTRIC

Phase at 0°

6. BECKWITH ELECTRIC

Phase at 40°

7. BECKWITH ELECTRIC

Phase at 80°

8. BECKWITH ELECTRIC

Phase at 120°

Es Eo sin 120°
Xs Xo

9. BECKWITH ELECTRIC

Phase at 160°

Es Fe sin 160°
XsXo

10. Phase at 200°

Va

|

Va

B

11. BECKWITH ELECTRIC

Phase at 240°

EsEo_ sin 240°
Xs Xo

12. P=

Phase at 280°

Va

PA

c B

Es Fe sin 280°
Xs Xo

13. BECKWITH ELECTRIC

Phase at 320°

Es Fe sin 320°
sa

14. Waveform Data

VAY

nani

rN
NY |

Synchronizing of 5-AT-Generator

15. Waveform Data

WVU

ANANDA RAN

Synchronizing of 6 Generator at Avon

16. BECKWITH ELECTRIC

Typical Scheme

Synchronizing a Generator Breaker

17. Schematic of a
Model System

18. Synchronizing
Procedure

. Speed and voltage
matching

. Phase angle matching

. Send close command

19. Typical Synchronizing

— L_ automatic
Manual Sync. one

Auto

Control Switch Synchronizer
(M-0193)

ran
Synchronism Check

(M-0188)

52b

Breaker Close Coil

-DC
Generator Synchronizing

20. Speed Matching

0 nro

g
E
a

e MUNI

Dräse

Results From Using Conventional
Pulse Frequency Modulation Matching Method

21. Speed Matching

cr

a
[Leon

T,
Tp ne cuan

Top «Jime seven

Using Proportional Pulse-Width
Modulation Method

22. Typical Synchronizing
Scheme

+De

Syne Selector Switch

Control Switch

Enable Sync
(M-0193) Synchronizer

Synch-Check
(M-0188) Relay

Breaker Close Coil

Operator-Assisted Automatic Synchronizing

23. Automatic
Synchronizing

System Sync-Check Relaying
There is a “static” angle across the
circuit breaker

Used to close the circuit breaker on a
power system for:

— automatic reclosing after a fault

- supervises SCADA closing

— supervise manual closing

24. Syncrocloser®
Interconnections

M-0194 GENERATOR CONTROL UNIT

ft

E

M-0193 SYNCROCLOSER” UNIT

M-0188 SYNCROCLOSER” CHECK RELAY

T

25. Synchronizing, Sync-Check
Relays and Generator
Control Features

Model No. motss | moros | morse | masse | mosoo | M0359

Device No. 1516

Y Standard "= Optional — Not Available
High Speed Sync-Check relay verifies Phase Angle within one cycle