remote synchronization
remote synchronization
(OP)
In a system restoration after a black-start, it is necessary that the power plant will be connected to a system substation through a transmission line of 110km.
The synchronization equipment and synchronization circuit breaker are installed in the system bus running distant 110 km away from the generator bus incoming.
How to make an automatic synchronization knowing that the TPs are distant from governor/voltage regulator?
The synchronization equipment and synchronization circuit breaker are installed in the system bus running distant 110 km away from the generator bus incoming.
How to make an automatic synchronization knowing that the TPs are distant from governor/voltage regulator?






RE: remote synchronization
RE: remote synchronization
-please suggest the necessary equipment.
RE: remote synchronization
RE: remote synchronization
Attached is an example with GE synchronizer:
-bus running is at the substation system
-for simplicity, assume only GE4-T4 circuit. Bus incoming is at the power plant.
-GE synchronizer is installed at power plant.
- power plant is distant 110km from substation.
Slavag,
All communication link is by OPGW cables over 3 transmission lines.
How to connect:
- 25 at power plant to trip circuit breaker at substation?
- VT Busbars at substation with 25 at power plant?
RE: remote synchronization
in the substation install local synchronizing panel with four push buttons (f+, f-, U+, U-), double voltmeter, double frequency meter, synchronoscope and push button for close command, of course any rotated switch local/remote or emergency operation and two pcs of binary to FO converters.
four signal (f+, f-, U+, U-) send to GE control panel via OPGW.
RE: remote synchronization
Can you send a single diagram of your power plant? Typically BSDG sets are connected to a MV (4.16kV, 6.6kV, etc.) within your power plant. In my experience I have seen BSDGs synchornized accross the MV incoming breaker which is connected to the grid via a UAT-->GSU transformer--PTs were available on both side of the MV incoming breaker. I actually spoke with a SEL rep at a conference about a remote auto-synhchronization scheme using synchrophasors one time and he said it was possible. You may want to contact SEL.
RE: remote synchronization
good idea!
Could you explain better? : two pcs of binary to FO converters.
86ed,
what is BSDG?
where is remote synchronization in your example?
RE: remote synchronization
RE: remote synchronization
at local synchronization with the generator circuit breaker opened, the governor works with speed regulation. In this case, with the generator circuit breaker closed, the governor works with the power regulation.
Is this option a design practice remote synchronization?
Have you done this?
RE: remote synchronization
RE: remote synchronization
Is closing command of circuit breaker originated from
automatic, remote,by autosynchronizer
or
manual,local, by substation operator?
RE: remote synchronization
The line was a short 115 kV line (1.5 miles). There may be other issues to worry about on a longer higher voltage line.
RE: remote synchronization
is not autosynchronization system, is manual control.
You will close breaker manually too.
Issue is sent 4 outputs via FO, 25 function is included in the local cubicle for safety issue.
4 outputs are like to any trip or block/enable commands (DTT, PUTT or POTT) .
Again, it's same as manual control from control room, only instead wiring, fiber optic.
RE: remote synchronization
Thank you guys!
RE: remote synchronization
RE: remote synchronization