How To Design Long Transmission Line Model in MATLAB SIMULINK ? | Dr. J. A. Laghari

[@moatazmoneer9172]

Great Dr. Javed , it very helpful, my allah blessed you 🤲🏼🤲🏼

[@DrJALAGHARI]

Thanks for the compliments.

[@mohd-rw3yo]

thankyou Dr 🤲🏻 may Allah blessed you 🙏🏻

[@DrJALAGHARI]

My pleasure.

[@mohd-rw3yo]

​@@DrJALAGHARI Dr how if my value is 275kV. can i use the same value for length, impedance, reactance and frequency ? or i need to change all the parameters value ?

[@DrJALAGHARI]

@@mohd-rw3yo 275 KV is your sending end voltage or receiving end voltage? Yes first you have to do the calculations.

[@sangitakar3143]

These models are very helpful,Sir.

[@DrJALAGHARI]

Thanks for the compliments.

[@DrJALAGHARI]

Thanks for the compliments.

[@ahmednabil7036]

thank you brother this video is helpful

[@DrJALAGHARI]

Thank you so much for the compliments.

[@caesaraugustus9708]

assalam-walaikum allah is my god, thank you sir!!!!!

[@DrJALAGHARI]

Wa'alaikum salam JazakALLAH

[@aishahfarhani3201]

Great video, very helpful :) Thank you so much

[@DrJALAGHARI]

Thanks for the compliments. Do share it within your circle.

[@dineshmohapatra1355]

@@DrJALAGHARI yes sir definitely

[@quangvinh4701]

Dear Dr, kindly do a simulation of combining between PV array & wind Turbine system complete with a transmission line model also. Blessed you. Thks

[@DrJALAGHARI]

@@quangvinh4701 Thanks for the comment and suggestions. Sure.

[@Globaltalentgt]

Keep it up dear

[@DrJALAGHARI]

Thanks. Do share it within your circle too.

[@shahiduddinahmed4987]

Assalamualikum sir. It is a very helpful video.Can we do this with nominal T & π medium transmission line also?

[@DrJALAGHARI]

Wa'alaikum salaam thanks for the compliments. For medium lines, it need to be checked again.

[@MoeSalamaIbrahim]

5:34 Why did you write 0.99 mH for the second value of inductance? What does it represent and why does it only work for this example only?

[@DrJALAGHARI]

Thanks for the comment. Actually in long transmission line, if we use any value of inductance or capacitance it causes resonant frequency of such value that is high or low the time period of MATLAB setting. This causes MATLAB to stop running the simulation. That's why you have to check for different values. In this example, this values gives satisfactory results.

[@MoeSalamaIbrahim]

@@DrJALAGHARI Aha, I see. So do I have to try for slightly larger or smaller values for either L or C?

[@hossainahmad4138]

Thank You.

[@DrJALAGHARI]

Thanks for the compliments.

[@a.na_hammad6225]

Dr. Laghari, Can you help me, please?
I need to design a 4-phase, 6-phase, 9-phase, and 12-phase Power transmission lines and compare each one of them with the 3-phase power transmission lines in terms of Harmonics, Voltage regulation, Sag calculation, and power loss using Matlab.
Do you have any references or textbooks that can help me to do this project?

[@DrJALAGHARI]

Thanks for the comment. You may find any research paper closely related to this topic first. Then try to implement it. Otherwise, it will be difficult.

[@a.na_hammad6225]

@@DrJALAGHARI Do you have references or textbooks that can help me to learn the basics of building power systems using MATLAB?

[@DrJALAGHARI]

@@a.na_hammad6225 I don't think so. Only TH-cam videos are available that may help you.

[@vandaliztik9266]

In general, how to select the zero-sequence resistance, Matlab help document does not provide adequate guidance about how to set zero sequence parameters. I know the selection for L0 and CO should not result in invalid propagation. But how to specify them for a simulation?

[@DrJALAGHARI]

Thanks for your message. Actually in long transmission line analysis, we normally ignore resistance. Therefore, in most of the cases, its resistance is zero. However, if in any particular case, resistance is needed, then its positive sequence resistance will be equal to its original resistance. Please refer power system analysis aymmetrical components chapter, topic sequence imoedance of transmission line.

[@gauravchaudhary3213]

@@DrJALAGHARI And what about zero sequence parameters? How to know them if we only have per unit length r, l and c

[@DrJALAGHARI]

@@gauravchaudhary3213 zero sequence is almost three times the values of positive sequence resistance.

[@gauravchaudhary3213]

@@DrJALAGHARI par aapne to video me positive sequence or zeo sequence barabar liye hain

[@DrJALAGHARI]

@@gauravchaudhary3213 g bilkul. Yahan pr isse value se answer correct aa raha ha. Aur zero sequence value dee nahi ha iss liye.

[@shotsbylars]

Will this method work for medium transmission line?

[@DrJALAGHARI]

Thanks for the comment. No. It will not work for medium transmission line.

[@Burhankittens]

sir how to design medium transmission line

[@DrJALAGHARI]

The medium transmission line can be designed using three phase pi section block.

[@كرارحيدر-ي1ر7ب]

خوية ورطتنا بهاي فيديوات

[@DrJALAGHARI]

JazakALLAH

[@aakankshasingla1126]

Sending end current value is not coming right for me
Bohot der se try kar rhi hu sbb same kiya hai still 902 ki jaah 3098 aa rayi hai

[@DrJALAGHARI]

Thanks for the comment. Kindly check the parameters may be you are making mistake somewhere.

[@MayurSkills]

Same problem arising

[@anonymoushhh7755]

Can you help me on my fyp on power system project area in simulink?

[@DrJALAGHARI]

Thanks for the comment. Due to my busy schedule I may not be able to give you sufficient time in your fyp

[@subhashreejaysingh3339]

Grt

[@DrJALAGHARI]

Thanks for the compliments.

[@peyarkikahaneya2486]

Thank you so much sir.

[@DrJALAGHARI]

My pleasure

[@namnguyenbao313]

Thank you Sir!

[@DrJALAGHARI]

Most welcome

[@ansarihabiburrahman1551]

mashaallah.. Its wonderful, can we use the same model for Gas insulated transmission line?
If yes then, which parameter I must change ?? and how ?

[@DrJALAGHARI]

Thanks for the compliments. I am not sure about gas insulated transmission line.

[@ansarihabiburrahman1551]

@@DrJALAGHARI thanks sir jazakallah

[@novaeryan2568]

Thank you sir, and would you make a video about relay differential on power transformator,sir?

[@DrJALAGHARI]

Thanks for the comment and compliment. Yes. Sure I will make video on this topic too.

[@novaeryan2568]

ok sir, I can't wait to see your video, as a reference for my thesis 🙏🏻

[@DrJALAGHARI]

@@novaeryan2568 Right.

[@PavanKumar-if8yu]

Sir how to do using program

[@DrJALAGHARI]

Thanks for the comment. Kindly go through the book power system analysis by hadi sadat . its program is written there.

[@yassirmaataoui8250]

Thank you sir, i would ask you in this case what is the R/X ratio of line ? and how do you compute r0 ,l0,c0 ?

[@DrJALAGHARI]

Thanks for the comment. I think this example has given these values in the data.

[@seeker5496]

Yha constant .9295 kya hai

[@DrJALAGHARI]

Thanks for the comment. Ye values hain inductance ya capacitance k. kindly see the bok for the better understanidng.

[@vehiko]

Thank you for the video. But 100 percent efficiency, how is that possible? It`s ridiculous

[@DrJALAGHARI]

Thanks for your valuable comments. This example is taken from the book power system analysis by Hadi Sadat who is an authority in the field of power systems. Furthermore, it is already mentioned in the example that it is a lossless line. Therefore, obviously, it must have an efficiency of 100%. otherwise, it is not a lossless line. Additionally, transmission lines have always higher efficiency usually in the range of above 95% to 98%. Therefore, I couldn't see any ridiculous thing in this example. If you see any such thing kindly justify your perspective with arguments, and I will try to change my mind. Thanks.

[@BANJOABUBAKAROLAJUWONSTUDENT]

Assalam alaikum sir I sent you a mail sir,I didn't get a response

[@DrJALAGHARI]

Wa'alaikum salam thanks for your message and email. I have checked now. Basically I haven't worked on lightning. To do this, you may follow any research paper closely related to this topic then implement it in MATLAB. It would be easy.

[@eng.salehhesham3905]

great video but can you send simulink matlab file plz

[@DrJALAGHARI]

Send email to [e-mail], it will be sent to you.

[@AhmedAdel-fp2cg]

This T model???¿????

[@DrJALAGHARI]

Thanks for the comment. I couldn't understand your query?

[@aqibfayyaz5068]

Assalam.o.alaikum sir plz send me MATLAB Simulink File.

[@DrJALAGHARI]

wa'alaikum salam can you please share the email, i will send it to you.

[@gauravchaudhary3213]

Ye 5:35 par inductance ki value 97 se 99 kyo kar di

[@DrJALAGHARI]

This value is given in the data.

[@gauravchaudhary3213]

@@DrJALAGHARI par data me to 97 diya hai. Fir 99 kyo kiya

[@DrJALAGHARI]

@@gauravchaudhary3213 g exactly. Lekin iss 99 put kia ha taa k simulation stop na ho jae due to technical reason. You may check it.

[@christiantube5801]

Do its programming

[@DrJALAGHARI]

Thanks for the comment. Its program is available in the book Power system analysis by Hadi Sadat

[@mohitjoshi8041]

Ka2A

[@GauravYadav-wi2rr]

abe yr tu ye bata jo bola ki ye bs is example k liye valid hai to baki k liye hm kya value lenge timing 5:55 jldi bata

[@DrJALAGHARI]

Thanks for the comment. Hr transmission line k parameters mile hote hain. Wahe put krainge. Iss example ma wahi data use hoga jo iss example ma mile honge.