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Member

Join Date: Feb 2008
Posts: 5

Automatic power factor

02/22/2008 12:55 PM

At Lt side automatic capacitor panel is connected. during the Electricity board supply the same is connected. whether i can connect the capacitor panel during the DG supply. as to increase some loading capacity of DG. whether there will be any problem in the load side / DG.

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Guru

Join Date: Jun 2007
Location: chennai,India
Posts: 592
Good Answers: 19
#1

Re: Automatic power factor

02/22/2008 9:39 PM

This topic has been dealt with in detail.Please go through the posts in this forum.

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Ramesh,Freelance Electrical/automation Consultant
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Guru
Engineering Fields - Systems Engineering - New Member Hobbies - Model Rocketry - New Member

Join Date: Dec 2006
Location: Long.92E,Lat.26N
Posts: 1336
Good Answers: 14
#2

Re: Automatic power factor

02/23/2008 9:19 PM

Logical/Correct approach is to connect each motor(or other load) with a capacitor--for it to look like cosΦ=1

You pay minimum to Electricity Board {--SEB}-- SEB most unhappy that way:

And DG sees minimum load-- good for DG

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Power-User

Join Date: Jan 2008
Location: northeast florida
Posts: 130
Good Answers: 3
#3
In reply to #2

Re: Automatic power factor

02/24/2008 8:00 PM

MUKULMAHANT

DID YOU REALLY MEAN TO IMPLY THAT ONE SHOULD CONNECT A CAPACITOR TO EACH MOTOR, "(OR OTHER LOAD)". THE "OTHER" LOAD COULD WELL BE PURELY RESISTIVE , IN WHICH CASE, POWER FACTOR CORRECTION IS NOT REQUIRED.

DONZI

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Anonymous Poster
#4

Re: Automatic power factor

02/28/2008 4:13 AM

Power factor correction is large concept. Different methodoliges are adopted since the basic intention is to adjust the power factor by varying current or voltage. APFC can be done in thy feeders or it can be done in the Substation also. ie., in the Sending end (Bus Capacitor Bank) or near to load end (Feeder Capacitor Bank). The current in one phase will be sensed and used as refernce current to on/off the capacitor switch. The current range will be set in the control panel.

In the Manual Bus Capaciotr bank there will be a separate CB with CT. In case of low voltage then immediately the capacitor bank will be turned on Bus to maintain the voltage.

Regards,

N.Suresh

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Anonymous Poster (1); donzi (1); MUKULMAHANT (1); ramvinod (1)

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