Home Electrical Engineering Forum General Discussion Advantages and disadvantages of Leading power factor

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• #10432
Keymaster

HAI IAM VISSU,

IAM WORKING AS AN ELECTRICAL ENGINEER IN SPINNING MILL.

RECENTLY APSPDCL POWER BILLING ON KVAH INSTEAD OF KWH.

SO WE HAVE TO MAINTAIN PF 0.99 TO UNITY OR LEADING PF.

IF WE MAINTAIN LEADING POWER FACTOR , ANY DISADVANTAGES ARE THERE?

PLS LET ME KNOW.

#11932
Keymaster

capacitive property of ckt. will increase

#11933
Keymaster

dear mr vissu

HELLOO!!!!!!!!!

now you must be aware that maintaining unity p f is very advantages in many ways. if you are in some states like maharastra or gujrat you can avail an incentive of 7 % max instead of a penalty of 7 % on your running monthly bill. your supply/load  needs to be studied like wise to design a suitable capacitive compensation. SO MANY MORE ADVANTAGES ARE ALSO THERE.

call me if you need ahy help

anil sonar .09970093675

For PRATEEKSHA CONSULTANCY

#12029
Keymaster

You will produce the reactive power that go back to the main line

#12047
electricalexpert65
Participant

visweswar rao said:

HAI IAM VISSU,

IAM WORKING AS AN ELECTRICAL ENGINEER IN SPINNING MILL.

RECENTLY APSPDCL POWER BILLING ON KVAH INSTEAD OF KWH.

SO WE HAVE TO MAINTAIN PF 0.99 TO UNITY OR LEADING PF.

IF WE MAINTAIN LEADING POWER FACTOR , ANY DISADVANTAGES ARE THERE?

PLS LET ME KNOW.

Yes! There are definite problems. Your EB or DISCOM calculates the monthly average power factor by the formula PF = kWh/kVAh. Please note that you do not gain any big advantage even with leading power factor. Because even with leading power factor the kVAh is going to be more and kWh less. SO, you will still have poor power factor and will be penalised. There could be other probelms such as voltage boost, etc. with leading PF

#12070
Keymaster

i 100% agree with electrical expert.

#12073
erickench
Participant

0.99 PF is a very good number.

#12084
bvcshekar
Participant

visweswar rao said:

HAI IAM VISSU,

IAM WORKING AS AN ELECTRICAL ENGINEER IN SPINNING MILL.

RECENTLY APSPDCL POWER BILLING ON KVAH INSTEAD OF KWH.

SO WE HAVE TO MAINTAIN PF 0.99 TO UNITY OR LEADING PF.

IF WE MAINTAIN LEADING POWER FACTOR , ANY DISADVANTAGES ARE THERE?

PLS LET ME KNOW.

as of now APSPDCL considers leading pf as unity power factor and therefore lead is advantageous. But if all the consumers do not switch off capacitors when load is not there merely to get tariff benefit then EB will introduce lead as lead metering in which case lead will pull down your pf similar to lag and kvah will be greater than kwh. 0.99 pf is quite good. Do not think of over compensation.  Are your loads fixed or varying?

bvc

#12093
Keymaster

If you have pf  0.99  or more that is mean you are  improve the main electric network , and the company of electruc  should give you the bonus for that .

and you have also avery emportant  advantage  , your  load Ampere ,ll be decrease that is mean you can add more load and that is mean also  your panel and circuit braker ,ll be  work at the good  status >

Eng.   Ali Younes

#12155
Spir Georges GHALI
Participant

visweswar rao said:

HAI IAM VISSU,

IAM WORKING AS AN ELECTRICAL ENGINEER IN SPINNING MILL.

RECENTLY APSPDCL POWER BILLING ON KVAH INSTEAD OF KWH.

SO WE HAVE TO MAINTAIN PF 0.99 TO UNITY OR LEADING PF.

IF WE MAINTAIN LEADING POWER FACTOR , ANY DISADVANTAGES ARE THERE?

PLS LET ME KNOW.

Dear ;

Certainly, you will some advantages when the Power Factor will be high, but be carful, because if you have a capacitive PF, then it's possible that the level of voltage will be higher that will be danger for some sensitive equipments,so, for that reason the ideal value for PF is : 0.93-0.96 but not more, because if you try to achieve 0.99 then certainly during switching-off for 1 big step ( 50 or 60kVAR ) you will have a capacitive power factor.

Regards.

#13016
Anonymous
Guest

@guest said:
mr sonar

i gone through u r answer but not getting idea clearly i want to know in slip ring induction motor why they use resistive load to improve power factor why not capacitive one ?

also i want to ensure what are the advantages of leading and lagging power factor

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