Numerical on Newton-Raphson Method of Load Flow | Part 1
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- Опубліковано 5 лют 2025
- Note: At time 14:40, please read the substituted values of the variables/parameters of P3° as,
P3° = 1.04[31.6228*1.05*Cos(108.4349° + 0° - 0°) + 35.7771*1*Cos(116.5651° + 0° - 0°) + 67.2309*1.04*Cos(-67.2490°)]
= 1.04[-10.5000 - 16.0000 + 27.0400]
= 0.5616 p.u.
The elements of Ybus used in this problem have been calculated in the following video lecture (starting at time 2:25):
ua-cam.com/video/t9tf-pgac_g/v-deo.html
Note: At time 14:40, please read the substituted values of the variables/parameters of P3° as,
P3° = 1.04[31.6228*1.05*Cos(108.4349° + 0° - 0°) + 35.7771*1*Cos(116.5651° + 0° - 0°) + 67.2309*1.04*Cos(-67.2490°)]
= 1.04[-10.5000 - 16.0000 + 27.0400]
= 0.5616 p.u.
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
sir you are one of the best teachers
Excellent explaining sir.. very detailed teaching..thank you very much..
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Thanks from Kenya you are a life saver.
You can download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Very good explanation sir....this video's are very helpful to me
Thank u so much sir for these problems. These are very much helpful for revision during our exams.
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
The method of explaining is very well. The doubt clear very easily
Thank you for the feedback
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Very nicely explained sir ❤
Thanks so much Dr for the easy explanation.
Dr, do you have a lecture video on 4 buses using Newton Raphson method?
Very nice explanation. Thank you.
Allah bless you Dr , these videos are very useful.
Very precisely explained sir.
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Excellent effort Prof. Please do make videos about Brute Force technique.
amazing lecture sir
Dr, I have been following your series on power/load flow analysis and it has been quite engaging to be honest....like the way you make problems quite ease to comprehend. Now my challenge/confusion is that i do before while solving do take the powers(P & jQ) for PV bus as positive and the powers for load buses as negative...going through your series especially during the gauss-seidel method I didn't see anything like such. Please Dr can you clarify me. Thank YOu
The load power and the generator power at each bus have been combined together (Represented by Si). Where, Si = SGi - SLi = (PGi - PLi) + j(QGi - QLi). Please see (at time 5:55) the following video lecture:
ua-cam.com/video/2DSfg266UVc/v-deo.html
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
جزاك الله خيرًا وبنا لك قصرًا في الجنة.
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?
👌👌👍
Happy teacher's day Sir
Thanks a lot
Thanks sir so easy to understand
Thank you so much 💓 sir
3:14 Why do we have delta p2, p3, q2 but not delta q3?
because p2, p3, q2 have specified values, where q3 specified is unknown
Because q3 unknown
Sir ,how to calculate angle 21,22,23 like wise ??..here theeta 21 is 63.43degree ,but u have given 116.5651?
We have Y21=-10+j20 = 22.3606∠116.5651°. It can also be observed that Y21 lies in second quadrant. Hence, it's angle will lie between 90 degrees and 180 degrees.
@@DrAfrozAlam but sir how Y12 can be -10+20i??..by calculation I got +10-20i
Remember that Y21 = - y21. For more details, you may watch the following video lecture before solving numericals:
Bus Admittance Matrix (In Hindi): ua-cam.com/play/PLEVP-S4VFKO-BAGScDSifBQQLGXRPwjvb.html
Sir how did u calculate theta(21) and theta(22) extra
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
@@DrAfrozAlam thnx sir
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
i have question and i want to solve it?
Excellent sir..., too good.
Thank you Ganesh
Bus 2 is PQ bus , where Q is specified , then why deltaQ2 and not deltaQ3 ?
Because, Q3 is not specified parameter
@@DrAfrozAlam OK, I got it. Since Q3 is not specified we can't calculate deltaQ3 as in case of Q2 which is specified. Thank you
Most welcome dear. Before solving numericals, it is advised to learn the theoretical concepts. If you need, you may watch the following lectures:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
@@DrAfrozAlam sure sir , I have electronics background, but, slowly I am getting it.
Thank you Dr.👌👌
You are most welcome
Sir 23:55 min me 2 * kese hua
what is the value of teta21 and delta1 I am confuse
To understand this, you need to watch the following lectures before solving problems:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
You can download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Why we are not calculating Q3
Before solving numericals, it is advised to learn the theoretical concepts. If you need, you may watch the following lectures:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Super
Sir how we write it as del p2, del p3, del Q2
And also how we take v2=1pu, del2=0pu, del3=0pu. Please reply me sir🙏
For details of each and every steps of N-R method of load flow, you may watch following lectures:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Thank you very much sir....Thanks a lot
Most welcome Pranjal
Jazakallah sir
How to do for 2nd itteration sir?
Before solving numericals, you should watch the following video lectures to understand each step:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Sir p3 zero ki term m wo value kaisey cancel hue hai and what is the meaning of r or r -1
Please explain this bs isi confusion ki wjh s y topic complete nhi hua hai abhi tk please explain this 😟😟😟
Before Solving the problem, please watch the following lectures (to understand various steps in details):
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Note: At time 14:40, please read the substituted values of the variables/parameters of P3° as,
P3° = 1.04[31.6228*1.05*Cos(108.4349° + 0° - 0°) + 35.7771*1*Cos(116.5651° + 0° - 0°) + 67.2309*1.04*Cos(-67.2490°)]
= 1.04[-10.5000 - 16.0000 + 27.0400]
= 0.5616 p.u.
Sir in calculation of p3 where is the term y33 magnitude?
Please check at time 14:11
Note: At time 14:40, please read the substituted values of P3° as,
P3° = 1.04[31.6228*1.05*Cos(108.4349° + 0° - 0°) + 35.7771*1*Cos(116.5651° + 0° - 0°) + 67.2309*1.04*Cos(-67.2490°)]
= 1.04[-10.5000 - 16.0000 + 27.0400]
= 0.5616 p.u.
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
Thank You sir..
Q2 m - nhi + aayega
hi we need manual solution of text book (power system analysis and design ) B A GUPTA third edition ..... please
Hallo Mr Dr.Afroz Alam at first thank you very much for this videos generally its very helpfull. I have a question the derivation from 54.2799 should be negative because cos derivation is -sin (dP2/ddelta2= -54.2799) do I have maybe false ???
In the following video lectures, the various steps have been explained in detail:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Download hand-written lecture notes (pdf) using the following link:
drive.google.com/file/d/10_A3zXCcfjhpf32bLFA2vzmXjzmhV9Xf/view?usp=sharing
explain in a detail way
don't tell us to solve
we don't even know how to solve prblm....
For detailed explanation, first you need to watch the following lectures:
Newton-Raphson Method of Load Flow: ua-cam.com/play/PLEVP-S4VFKO9HEb7Mozh_sEQzekft-DLn.html
Too long
Yes, because you are solving a numerical on "Newton-Raphson method of load flow", which is not an easy task.
Ye topic banaya hi kyu hai to phir