Newton Raphson Load Flow Solution - 3 Bus - Part 1 of 3

[@rememberbaloyi2212]

yho this video saved my life...i only saw this video on the day of exam, i never understand newton rampson but now i do..thank you so much for your explanation

[@harismyname]

literally saved my bachelor's. God Bless

[@pradeepyemula6015]

Glad to know this...!

[@snsQ8]

You forgot to add -p3 for Fp3 at 19:28 but it won't effect your final answer. Thanks for this great guide

[@mohamedragaa4776]

Precise and concise! Very well elaborated Pradeep.

[@Janakasrajapakse]

This is great lecture series. Thank you for your hard work

[@JohnHondo11997]

He's like "All this Newton-Raphson is making me thirsty!!" I also get parched with these equations so I'm right with you on that.

[@jhong358]

step 1, can I ask for more explanation on how the the corresponding pf equation is decided?

[@jasmineraees2697]

Amazing this is very well explained in details 👌thank you for your efforts👍

[@chinesetime8899]

bhai ye boht acha bnaya he apne, kia ap bta skty hain ke kis software mei banaya he ye lecture?

[@souravde6116]

In newton raphson method of loadflow, do the reactive power generation of the generator bus changes with load? If yes, then how. it could be incorporated in NR load flow as we donot use corresponding Q of that PV bus to calculate mismatch vector?

[@edmundsiew588]

Hi Sir, would like to check 3 bus , 3 unknown states. what if you have one slack bus and 2 PQ bus instead? There are 4 unknown states?

[@azvocal790]

nicely and clearly explained. i need to know how to put values in partial derivatives , the power factor and voltage angles as I'm not getting answer as given in Jacobian J1 and so on..plz explain.

[@abdullahalmahmud5298]

Would you help me to know which board are uesd by u to creat your video. It u b great help ful for me.

[@mohammedayaz9397]

sir please upload video lecture on voltage and frequency control, ( power system)

[@siddhantsarraf]

Using the generalized function the equation for f(p3) and f(q2) calculated has some flaw. You have not done minus of p3 and q2 respectively.

[@PradeepKumar-sv6bp]

Yes. Thanks for pointing out the mistake. Other's also commented about the same mistakes. Unfortunately, youtube has disabled the addtion of text boxes etc to hilighlight where the mistake was made. I can't redo / edit the video now. Anyways, in part 3 of the video, this mistake was corrected (while coding) and we got the right answer.

[@Peace4867]

This is a good tutorial. If there is a branch bus in the middle of transmission line which is not connected to either generation or load, do we still need to generate the power flow (P and Q) equation for this branch bus?

[@vishalsharma-cn7fh]

Sir do some numerical on newton raphson method

[@jblife123]

sir, please answer this... In a power system with 100 buses, 1 bus is taken as slack bus, 15 buses are PV buses and rest are PQ buses. The number of variables to be solved by Newton-Raphson method in polar coordinates is...

[@siddhantsarraf]

The no. of variables to be solved using newton raphson method is = 183 1. 15∆ from the pv bus 2. 84 v + 84 ∆ from pq bus Total no. Of variables = 84+84+15=183.

[@Dpfpv1]

why cant we use P2 equation for V2?

[@pradeepyemula6015]

Good Question. If 2 is a load bus, then both P2 and and Q2 will be known, and therefore you can use any combination (1) that is P2 equation for delta2 and Q2 equation for V2. or combination (2) that is P2 equation for V2 and Q2 equation for delta2. However, if 2 is a generator bus, P2 will be known and Q2 will be unknown, on the other hand |V2| will be known and delta2 will be unknown, that will leave only one combination, P2 equation for delta2. So, irrespective of load or gen bus, taking P_i equation for delta_i and taking Q_i equation for V_i always works, and it avoids confusion by being consistent.

[@sairam-fe1qx]

can you explain 3bus system for zip load model can you please provide the answer pradeep yemula sir

[@farajalyami2044]

I have same question and why we put it equal zeros

[@Aurisca]

It's been a while since I've done a NR problem but I believe you set them equal to 0 for conservation of energy. The equation is stating that the summation of all the P's from i to n is equal to Pk (and similarly with all the Q's from i to n is equal to Qk). This means that the total P and Q in the system, minus the summation of each individual bus's P and Q, is equal to 0 - i.e. energy is conserved.

[@shriharimadhav]

how the corresponding pf equation is decided??

[@farajalyami2044]

I have same question and why we put it equal zeros

[@skmmusic_23]

Plz upload the videos on all problems of power system analysis 2 for vtu exam purposes sir . ..

[@avinashbarwar1745]

Thank you so much, SIR. Wonderful explanation.

[@vincenthughes5795]

more explanations on the way would help

[@tufanbektas7937]

hi i just want to ask that what if our line between bus-1 and bus-2 has a real term like 2+j0.1 what will be our Y12? thanks

[@pradeepyemula6015]

Y12 = -(1/z12) = -(1/(2+j0.1)) = (-0.498753 + j 0.024938) = 0.5 < 177.4 deg

[@tufanbektas7937]

Pradeep Yemula that was pretty fast :) thanks for your answer sir!

[@asimaslam5423]

could you please tell me, which software is it that you use for making video? i know it's irrelevant to the topic, but i really want to know.

[@pradeepyemula6015]

1) I am using Mac Book Air laptop which has, the software for video recording the screen - "quick time player" 2) the software for writing on the screen with black screen is "supreme paint lite" available on Apple app store 3) for calculations I am using Octave (which is free - open source alternative for matlab) 4) the hardware is "wacom one" pen tablet

[@asimaslam5423]

thank you :)

[@northkoreasupremeleaderoff721]

Bratikincharu guruv gaaru

[@BurRun-kt3tf]

Thankអរគុណ❤

[@fatihserttas1473]

Thanks for your valuable lecture.

[@khumaranasibli7668]

Perfect explanation :)

[@TJBEATSAMV]

Thank you !!

[@JamesBrown059]

10:32 & 11:57 Highlight of the video

[@bigv364]

Incredible thank you

[@ggbc11]

Thank you very much!

[@aminezougali3545]

nta les hommes

[@mohamedezaldine6669]

thank you so much

[@suntharjee]

nice

[@ijaz09318]

Sir, When Azzan is Sounding from Mosque ,please Stop the Lecture for That Time,Jazakallah

[@هيفاءسلمانخضير]

اكو شرح بالعربي بلكت يفهم اكثر

[@khushimuskan9731]

sir your teaching method is good but why u r writing in yellow and red

[@howcreated_ideas]

Can't really understand is just explaining as memorize equation. You need to so iterative Taylor series vector calculus then Jacobian matrix. Your calculation is incomplete not accurate...

[@kunalsingh4156]

Aadhe gante to question likhne me lga dete ho. Let's say ,.. let's say karte karte. Question pahle se hi soch liya kare. Then lecture will be more effective.

[@amolnarang4043]

It gives deep understanding to the topic.

[@samwelwafula5262]

You do too much introduction. Go straight into solving. Sometimes the exam is just a few minutes away.

[@thenerdyouknowabout]

This is truely unintelligible.