Generator Tripping on Over Current

Another ESO incident.

Current from the grid flowing back into the windings comes first to my mind.

sure fire case of a grounded flux capacitor

Loss of excitation protection was not installed.

Next question.

Loss of excitation.

Reverse power; i.e., power is going from the grid (or other generator) into the generator that lost excitiation, thus driving it like a motor.

As already stated here, more succinctly:#5

And here:#1

So because two people have already posted (very sparingly I might add. So sparingly that the OP may, or may not fully understand what the problem is!!), a third person (Moi!) is not allowed to post in a more proper and full manner that would be difficult to misunderstand????

To remind you, here are all three posts, my post was as follows:-

Maybe am looking at this a little too simply but loss of excitation means that instead supplying current to the grid, it (the generator) will start to "take" current "from" the grid.

It turns a generator from a generator to a giant motor and could severely damage the generator and possibly the prime mover....possibly personnel too...

....so good generator installations have a "reverse power" sensing that drops the connection to the grid as good as "instantly" when this happens...

It would appear that you need to fault find your excitation circuits and control.....maybe even the hardware mounted on the generator itself, whatever that is!!!

Post #1 (The first one that you "accidentally" mentioned second for some obtuse reason!!):-

Another ESO incident.

Current from the grid flowing back into the windings comes first to my mind.

Badly spelled words are shown underlined, in the also grammatically poor Post #5 (I wonder who that was ):-

Reverse power; i.e., power is going from the grid (or other generator) into the generator that lost excitiation, thus driving it like a motor.

The post you mentioned first was actually second!!! Possibly yours?

But in the future, DO try to do it like a man, using your own name for example.......

All I can say is "what a W*****!!!"

By the way, if you send me your email name for real, I will send you that perfect name for you in full AND the link on the Oxford dictionary so that you know exactly what it means.....in case you don't already!!

The English definition reads (The US definition would be erased from CR4) :-(

A contemptible person (used as a generalized term of abuse).

Maybe a bad hair day?

But here on CR4, you are certainly not alone!!!!

Thankfully though, you are in a VERY tiny minority! All with the same first names "Anonymous Poster".....Got it?

And the protection circuitry tripping out, as it is supposed to act, is why this is another ESO incident. Some prime mover mechanical connections have a planned weak point (shear pin) that will mitigate the mechanical damage if the relay contacts are fused closed or foolishly bypassed.

It was good of you to connect the dots already pointed out. I (for one) forget that we attract people in and out of engineering that need the dots connected.

Many thanks for your friendly comments redfred. I wish you a great day.

The "Anonymous Poster #1" (who we probably all know EXACTLY who he is), simply does not "get it!".....either with the technology, the spelling of certain word, or the use of good manners......