Trouble in generators

K

Thread Starter

Kuummaarr

Generator unable to maintain load in auto mode. When running on load individually then it is working fine.

One of the generator on the ship is not responding to auto controls. when sharing load with the other running generator, it takes more load after some time, and the governor motor contactors for raising and lowering the speed are continuously operating.

Please advice.
 
O.M.G.

If this is happening on a ship, that sails between ports on navigable waterways, GET SOMEONE ON-BOARD TO HELP SORT THE PROBLEM.

Please.

PLEASE.

<b>PLEASE</b>
 
This may be due to mismatch in governor responses. One which has gone fast shares more load and then keeps on dancing with servomotor oscillating between raise and lower. Matching the response of governor may help.
 
A ship without power in navigable water-ways is dangerous--to itself and other vessels, too.

I should have asked: <b>When did this problem start?</b>

Because, one presumes the two generator-sets have been synchronized together before without problems, which begs the question: <b>What changed?</b>

There is so little information provided it's virtually impossible to say what the problem might be. We don't know what kind of prime movers are driving the generators; what kinds of governors the prime movers have; how the two are sized relative to each other.

But the implication is: It worked at one time. So, <b>What changed?</b>

If "nothing" changed, then has someone checked the governors of the generator prime movers to see if there are any alarms?

If it's due to a mismatch in governor responses, what caused the mismatch (presuming it worked properly before this issue started)?

What governor modes are each of the two units running in when synchronized?

Is there some kind of load-sharing scheme in use controlling the load of each of the two units?

What energizes/de-energizes the governor motor contactors, and is that device/control system working properly without alarms?

What is happening to the frequency of the shipboard system (we presume it's AC).

Again, too little information was provided. And without more information, there's not much more that can be said.

Except, <b>What changed?</b> and <b>"BE CAREFUL!"</b>
 
Top