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power factor

Created by: Jason85 at: 7/5/2013 7:12 AM (7 Replies)

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7/5/2013 7:12 AM	Rate (0)
Jason85 Posts: 39 Rating: (9)	Hiiii, Which power factor is more suitable leading or lagging?
Jason85 Posts: 39 Rating: (9)
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7/5/2013 7:47 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 11/23/2024 Posts: 8092 Rating: (883)	Unity power most suitable. In this case active power = reactive power (KW=KVA)

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7/5/2013 8:04 AM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	chet Hiiii, Which power factor is more suitable leading or lagging? Hello, Lagging vs. leading is another way of saying the net reactance is either inductive or capacitive. This is slightly simplistic, and what we are talking about above is really DPF, or Displacement Power Factor. Non-linear loads don't really shift the current waveform, they distort it. The current waveform starts to look like a square wave, and square waves contain harmonics. So non-linear loads add harmonic distortion, and this tends to mimic a capacitively reactive load, adding some leading power factor. So when we say power factor, we really must include DPF plus harmonic distortion in total. Read entire story here
	VANDE MATARAM.....
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This contribution was helpful to 1 thankful Users Jason85

7/5/2013 10:53 AM	Rate (1)
Ayman Elotaify Platinum Member Joined: 5/28/2008 Last visit: 9/3/2025 Posts: 4522 Rating: (843)	PISCEAN 2010 Unity power most suitable. In this case active power = reactive power (KW=KVA) I am sorry to tell that this piece of info is not correct. P = Active Power [kW] Q = Reactive Power [kVAR] S = Apparent Power [kVA] S^{2 =}P² + Q2 P = S* Cos (Phi) Q = S* Sin (Phi) While Cos (Phi) = PF The ideal System happen if (Phi = 0), i.e. PF = 1, In this case Active Power [kW] = Apparent Power [kVA] And Reactive Power [kVAR] = 0 Hope this helps.
	Ayman Elotaify
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7/5/2013 11:38 AM	Rate (2)
jeet2907 Posts: 235 Rating: (52)	Any time the power factor is less than 1, whether it is leading or lagging, the efficiency is less than optimal. As power factor declines, more power is required to do the same amount of work. Leading or lagging simply refers to the load being more capacitive or inductive. The disadvantage of a lagging power factor is that the load is highly inductive. Where power factor declines, greater losses are registered in the generation/distribution/transmission areas. for your information, Power factor has nothing to do with efficiency. As power factor reduces, the true power of the circuit is unaffected, while the apparent power increases. The operation of load devices, such as motors, are completely unaffected
jeet2907 Posts: 235 Rating: (52)
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This contribution was helpful to 2 thankful Users DILIP_1111 Jason85

7/5/2013 12:47 PM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 11/23/2024 Posts: 8092 Rating: (883)	Ayman Elotaify PISCEAN 2010 Unity power most suitable. In this case active power = reactive power (KW=KVA) I am sorry to tell that this piece of info is not correct. P = Active Power [kW] Q = Reactive Power [kVAR] S = Apparent Power [kVA] S^{2 =}P² + Q2 P = S* Cos (Phi) Q = S* Sin (Phi) While Cos (Phi) = PF The ideal System happen if (Phi = 0), i.e. PF = 1, In this case Active Power [kW] = Apparent Power [kVA] And Reactive Power [kVAR] = 0 Hope this helps. hello, Yes it was typing mistake(I wrote reactive power instead of apperant power) But if you noticed further I have mentioned KW=KVA. So no need to Hope this is clear.

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7/5/2013 1:16 PM	Rate (0)
AMAZINGAHMED Gold Member Joined: 8/27/2006 Last visit: 10/22/2024 Posts: 719 Rating: (88)	I've seen this picture and I thought it would be funny and might clear things up. Attachment Root-Beer-Mug-PF.jpg (351 Downloads)
	The more you know, The more you know that you don't know
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This contribution was helpful to 2 thankful Users IBN-Service Vithani

7/5/2013 5:40 PM	Rate (0)
Vithani Platinum Member Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	chet Hiiii, Which power factor is more suitable leading or lagging? Hello I just want to add - in industry you will find PF always lagging or near to unity Leading pf may have some worst effect specially on generator - here is one note on that More on this - you can google it - this is very basic of electricals and you will find a lot nice explanation Regards, Devesh Vithani
	I dont Like people driving Fast, thats the reason I overtake them ;)
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