Sudden Reduction of Load
Sudden Reduction of Load
(OP)
hi every body
i am facing a strange problem
we have a generation power station that feeding 8 OHL MV 13.8kv feeders
and in one specific feeder @ peak load ( 4.2 MW ) suddenly the load goes down for 2 MW and then retain gradually to 4.2 MW withen 3-4 minutes.
we checked the OHL and nothing found.
and the poeple in the generation side saying that the problem is not fron their side.
is there any way to locate the source of this problem ? and is there some kind of a protection relay that could act like this during specific conditions?
i am facing a strange problem
we have a generation power station that feeding 8 OHL MV 13.8kv feeders
and in one specific feeder @ peak load ( 4.2 MW ) suddenly the load goes down for 2 MW and then retain gradually to 4.2 MW withen 3-4 minutes.
we checked the OHL and nothing found.
and the poeple in the generation side saying that the problem is not fron their side.
is there any way to locate the source of this problem ? and is there some kind of a protection relay that could act like this during specific conditions?






RE: Sudden Reduction of Load
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Sudden Reduction of Load
Industrial process that had a hicup? Some pick up load again in that interval.
Can't be many large loads on a 13.8 kV feeder. Give them a ring to find out.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Sudden Reduction of Load
If it's have some time sequency, it's seems as industrial process. Call to your customers and check with them.
As Gunnar say, it's also seems as LS and load restoration
or as decoupling and re-connection to grid.
Maybe you have on this line customer with generator with paralell operation to grid.
In all cases you need check this with customers.
Regards.
Slava
RE: Sudden Reduction of Load
RE: Sudden Reduction of Load
is it possible that we have one lightning arrestor which is not working as designed?
and is there some kind of a protection relay that could act like this during specific conditions?
and there is any industrial consumer at that feeder?!
RE: Sudden Reduction of Load
RE: Sudden Reduction of Load
RE: Sudden Reduction of Load
I am going to check the Electric motors & motor controls engineering forum now and look for a post that goes
"For some reason all the motors in our plant drop off line together. It takes us 3 to 4 minutes to restart everything. Managment is furious."
This would be the first most probable cause. (And the second most probable and maybe the third also.)
respectfully