We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when

We have 2 no. 4MW DG set. and GEB supply.
But, we running, only 1 DG set. when we done APFC/Power
factor setting : 0.90, then winding temp. Low. but when
setting done : 0.83, then Winding temp. increase.
WHY Why ? ? ?, plz give me answer.

Question Posted / ashok_sharma

4 Answers
7583 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power ..

Answer / suthan prabhu

The reacive power taken by the load will be same but the
current supplied by the source will increase bcoz the p.f
is decreased from 0.9 to 0.83.hence the winding temperature
increased.

Is This Answer Correct ?

5 Yes

0 No

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power ..

Answer / gurucharan singh

this is clear that at lower pf settings, its the DG which
compensate for the KVAR. which results in the high winding
temperature. For this check the plant loads connected. And
KVAR supplied by EB & DG. Also during parallel with grid DG
generally act as KVAR compensator along with KW supplied.

Is This Answer Correct ?

2 Yes

1 No

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power ..

Answer / sudheer

i think the main reason is load. when the power factor is
0.90 then the generator run smoothly and not over loaded.

Is This Answer Correct ?

2 Yes

1 No

We have 2 no. 4MW DG set. and GEB supply. But, we running, only 1 DG set. when we done APFC/Power ..

Answer / rajnikant dodiya

Simple,
power factor increse, current decrese ane hence losses
(I^2R) reduces. But if Power factor reduces, losses
increases with square of current which makes dg to be hot
compared to increase pf.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar

1 Answers

What is the instrument to check the rotating diode fuse of alternator in running conditions?

1 Answers

Wat is meant by OLTC?

1 Answers

define reflection method?

1 Answers

why capacitor bank is not used in generator power

7 Answers Caterpillar,

how to can we synchronize different capacity of DG sets.60kva& 250kva?

2 Answers Power Plant,

Which type of starter to used which type o motor

0 Answers Crew pvt ltd,

what is the spdt

1 Answers

what is amf panel & how it is working

6 Answers ATS,

How to calculate the Sizes of the cable required for one specific load? Is there any formula for that? ( EX: For 400KW load,50mtr Length, What is the LT cable Size required?)

2 Answers Texmo,

In UPS, battery connections if parallel connection given, what will happen?

2 Answers

How many earthing pits required for diesel generator set ? Why ?

1 Answers

For more Electrical Engineering Interview Questions Click Here