We have a 33/11kv switchyard having 12.5 MVA power transformer. We export &

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.

Question Posted / pradeep kumar dalai

3 Answers
6615 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power throu..

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

We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power throu..

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

We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power throu..

Answer / ab. khalil khan

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

Post New Answer

More Electrical Engineering Interview Questions

When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?

1 Answers MCL, Star Wire,

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

0 Answers

the power consumption of perminant magnet moving coil?

1 Answers

How many gap between finger contact in a.c.b. and v.cb.?

0 Answers

Write a note on materials used as a fuse element.

0 Answers Bhel,

wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

0 Answers FLS,

What mean 150 amp hour write on battery.

1 Answers Syncom,

compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

0 Answers

What is the required value while doing the megering

1 Answers

A two-terminal variable resistor is known as a

1 Answers

a solenoid of inductance 250mH and resistance 10ohm is connected to a battery. the time taken for the magnetic energy to reach 1/4th of its maximum value will be?

1 Answers SSC,

What is different between MCB & MCC & isolator switch

1 Answers Standard Chartered,

For more Electrical Engineering Interview Questions Click Here