We have a 33/11kv switchyard having 12.5 MVA power
transformer. We export & import power through this
transformer. When we export power, the PF will be depend on
GRID PF & when we import power the PF will be depend on our
load PF. but the problem is that,when neither we export nor
import but our 33KV vCB is in close position,our meter read
the power factor 0.14 to 0.25 at that moment. So how can be
we improve the power factor at that moment.
Answers were Sorted based on User's Feedback
Answer / k.prakashchandra
You should realise that when there is no load on
transformer, the pf is almost zero
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / vinova
try to put some light load on your transformer during this
period if you you wnt to keep the pf high during this
period. it happens because under no load condition the
power fector angle is near 75 and power fector is high. it
happens because tansformer need reactive power for
energising its magnatic circuit. as the outer load is zero
during no load the internal load of transformer is
inductive.
Is This Answer Correct ? | 2 Yes | 1 No |
are load variation in your plant? If variation for some minutes are in your plant then this problem should be created. In load time power factor was normal but on no load time power factor was abnormal, because we have maintain the power factor in on load position.At no load time capacitive power has make a leading power factor.for detail pl. cont. to Ab. Khalil 9977278622
Is This Answer Correct ? | 1 Yes | 0 No |
Whag is the PS class of accuracy of CT?
what is iron loss?
What is the difference between MCCB,ELCB,RCB & MCB
why we get 2 differnet values for power factor in 2 watt meter method in 3 phase
function of apfc pannel
what is ACB
How to calculate the NGR value for a 2.7MVA Transfomer, 11KV system where the fault current has to be limited to 50A?
what is meant by PU value ? anyone can you explain briefly to me ?
In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?
what is the difference between real and reactive power? and what is the importance of these
What is FM200 Fire Supresion System??
hi, i finished b.tech eee in 2008, im worked in dg sets mfg company , now i left job in 6months back, now again i want get job core side, how can i get? is there any couses we have learn to get better oppurtunity? /