Generator hunting when parallel

  1. Feb 26, 2012 #1
    Evening to all, I'm electrician onboard AHTS vessel. Currently I've have problem with generators onboard my vessel. For your info, we have 4 generators onboard. When paralleling with generator No. 1 and 2, the generator will be hunting if the load is low. But if running only generator 1 or 2, there are no problem. This happened also if we paralleling with 3 generators with generator no. 2. I suspected that there is a problem with generator No. 2. Hope I can get information regarding this matter. Thanks.
     
  2. jcsd
  3. Feb 26, 2012 #2
    What drives each generator?
     
  4. Feb 26, 2012 #3

    jim hardy

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    Check droop settings on governors?
    Sounds like #2 is different trom 1 & 3 somehow.
    Could be as simple as excess play or friction in mechanical throttle linkage...
     
  5. Feb 27, 2012 #4
    What type of governors do you have mechanical or electronic?
    What size are your generators?
    Do you have a large load that you can switch on and off easily?
    When running single generators does the frequency remain stable?
     
  6. Feb 27, 2012 #5

    psparky

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    What does "hunting" mean in this application? Surging or something like that?
     
  7. Feb 29, 2012 #6
    What does "hunting" mean in this application? Surging or something like that?
    It means that the load is constantly shifted from one generator to another and the back again.
     
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