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Class start 5:48 Transmission line and Tower Transmission line 7:27 Buses: node of power system - transmission line just a link connected two buses - act like branch of network - bus act node in the network - transmission line made of conducting materials Which material is preferred to transmission line 10:23 Material used 10:44 Aluminum is preferred - Light weight - Lower cost - More resistivity than copper 13:25 Area(Aluminum) > area (copper), for same lengh of transmission line - Less corona 16:29 Redius kom hole corona Loss beshi , redius beshi hole corona loss kom 17:27 Corona - any wire flow current, due to current electric fields creat er charpashe . Air takhon ionised hoye conductor hisebe byabohar hoi. Desirable characters 19:45 - low power loss and high efficiency 19:55 Generator er current jodi Transmission line e nosto hoye jay , tahole toh Loss. - 21:14 voltage drop should be as low as possible Line a voltage drop jeno kom hoi Line a power loss o jeno kom hoi Rating of transmission line 22:35 Voltage rating 22:46 Rms line to line voltage of transmission line , thus is proposonal to insulation Line voltage barale insulation o barate hobe Current rating 25:01 Rms line current carried by transmission line It's Proportion to x section area of conductor MVA rating 26:05 Root(3)*V load *I load Dielectric Breakdown 28:20 Insulator conductor hoye gele seta hoi Dielectric Breakdown Why Dielectric Breakdown comes ? 29:52 Electric fields kono atom er upor deoya hole field er dike positive charge abong biporit dike negetive char chole giye electric dipole toiri hoye jay . Jodi electri field er di pole er modheyr akorshon break korte pare tahole dipole ar electron free hoye jay . Abong atom gulo ionised hoye conductor er moton achoron kore . Etay Dielectric Breakdown er karon Dielectric strength 31:48 Kono atom er dipole hobar pore maximum strength jar pore or electron proton er akorshon theke chinno hoye jay .abong free electron toiri hoi. Dielectric strength is not voltage rating Dipole wala Insulator ke di electric material bole Dipole 34:35 Positive and negetive charge separate from small distance but still bount together p=qd Leakage current 37:16 Transmission line o tower er modhey Proper Insulator na thakne electric fields er karole kichu current tower hoye ground a chole jay . Tate current loss hoi . 38:38 - Transmission line is always trited as star connection so load is in series Machine and transmission line 44:47 Different Machine protechted Transmission line exposed Er jonno maje maje Transmission line Over voltage hoye jay . Tate Leakage current bere jate pare. Tai insulation sobsomoi over voltage rating a banano hoi. Insulation is proposonal to over voltage in transmission line. Insulation is proposonal to voltage rating in Machine. cause of over voltage - lightning over voltage 48:10 Lighting transmission line er upor charge arop kore fole V=Q/C sutro anusare , line er voltage o barbe. Why lightning creat 49:39 When uesd lightning over voltage 52:38 - when transmission line voltage is below 345 KV Lightning theke bachar jonno ki kora hoi 53:30 Lightning always strikes highest conductor. Er jonno akdom upore akta overhead shield wire ba ground wire thake jeta direct ground kora thake . Main 3 phase transmission line thake er niche . Fale lightning ese ei top e thaka overhead shield wire a pore , abong main transmission line rokhha pay. Switching over voltage 56:31 When Circuit breaker open ,it's behave a capacitor which frome a LC oscillator with line inductance Vmax = 2 Vs If voltage rating > 345 KV Then , insulation is proposonal to switching over voltage
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sir plz provide direct link for notes .. b cz it is difficult to find topic wise notes from telegram for those student who could not attend the live class as there is a so many massages in telegram grp
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Sir lighting occurs due to the Collision between the clouds or an imbalance occurs between the clouds and ground and the air surrounding Vibrates and creates thunder finally produce an electric discharge which is known as lightning
Moving particles In cloud get ionised and hence carry charge. Whenever charge particles Collide with the Opposite charge particles then lightening happen..... opposite charge particles may moving nearby the earth's surface.
whenever charge particles collide with neutral atom under the influence of electric field (which is generated by power line ) then light&sound generate. that is corona
Sir lighting current ka use hm transmission line me nhi kr skte Lighting current ko over head line se ground nhi krke use direct transmission line me uska use nhi kr sakte kya sir
Lightning over voltage occurs due to potential difference between the two clouds which have opposite charge on each other or in single cloud in which opposite charge developed in two sides or between earth and cloud ☁️ is greater than dielectric strength of mediam between them.
lightning ground pr aati h kuki ak atmospheric capacitor ban jata h, in this cloud and earth surface work as capacitor plates and between these two, atmosphere work as an insulating medium, or jab clouds pr jyada charge collect ho jata h tab hota h dielectric breakdown , or cloud or earth k beach charge flow hota h.
the lower surface of the cloud is negatively charged and the upper portion is negatively charged. now when two clouds rubes each other then a huge amount of charge transfer occurs in between the clouds. and if the time constant of this charge transfer is low than a huge amount of current flows between the clouds. this is why we have seen sparking or lightning.
Sir Lighting Over voltage kaliya agar humna Shield wire sa ground may pass kar diya then Lighting Over voltage ka base pay Insulator ko kyue add Kara line (Under 345 KV) may??
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Class start 5:48
Transmission line and Tower
Transmission line 7:27
Buses: node of power system
- transmission line just a link connected two buses
- act like branch of network
- bus act node in the network
- transmission line made of conducting materials
Which material is preferred to transmission line 10:23
Material used 10:44
Aluminum is preferred
- Light weight
- Lower cost
- More resistivity than copper 13:25
Area(Aluminum) > area (copper), for same lengh of transmission line
- Less corona 16:29
Redius kom hole corona Loss beshi , redius beshi hole corona loss kom
17:27 Corona - any wire flow current, due to current electric fields creat er charpashe . Air takhon ionised hoye conductor hisebe byabohar hoi.
Desirable characters 19:45
- low power loss and high efficiency 19:55
Generator er current jodi Transmission line e nosto hoye jay , tahole toh Loss.
- 21:14 voltage drop should be as low as possible
Line a voltage drop jeno kom hoi
Line a power loss o jeno kom hoi
Rating of transmission line 22:35
Voltage rating 22:46
Rms line to line voltage of transmission line , thus is proposonal to insulation
Line voltage barale insulation o barate hobe
Current rating 25:01
Rms line current carried by transmission line
It's Proportion to x section area of conductor
MVA rating 26:05
Root(3)*V load *I load
Dielectric Breakdown 28:20
Insulator conductor hoye gele seta hoi Dielectric Breakdown
Why Dielectric Breakdown comes ? 29:52
Electric fields kono atom er upor deoya hole field er dike positive charge abong biporit dike negetive char chole giye electric dipole toiri hoye jay . Jodi electri field er di pole er modheyr akorshon break korte pare tahole dipole ar electron free hoye jay . Abong atom gulo ionised hoye conductor er moton achoron kore . Etay Dielectric Breakdown er karon
Dielectric strength 31:48
Kono atom er dipole hobar pore maximum strength jar pore or electron proton er akorshon theke chinno hoye jay .abong free electron toiri hoi.
Dielectric strength is not voltage rating
Dipole wala Insulator ke di electric material bole
Dipole 34:35
Positive and negetive charge separate from small distance but still bount together p=qd
Leakage current 37:16
Transmission line o tower er modhey Proper Insulator na thakne electric fields er karole kichu current tower hoye ground a chole jay . Tate current loss hoi .
38:38 - Transmission line is always trited as star connection so load is in series
Machine and transmission line 44:47
Different
Machine protechted
Transmission line exposed
Er jonno maje maje Transmission line Over voltage hoye jay . Tate Leakage current bere jate pare.
Tai insulation sobsomoi over voltage rating a banano hoi.
Insulation is proposonal to over voltage in transmission line.
Insulation is proposonal to voltage rating in Machine.
cause of over voltage
- lightning over voltage 48:10
Lighting transmission line er upor charge arop kore fole V=Q/C sutro anusare , line er voltage o barbe.
Why lightning creat 49:39
When uesd lightning over voltage 52:38
- when transmission line voltage is below 345 KV
Lightning theke bachar jonno ki kora hoi 53:30
Lightning always strikes highest conductor. Er jonno akdom upore akta overhead shield wire ba ground wire thake jeta direct ground kora thake . Main 3 phase transmission line thake er niche . Fale lightning ese ei top e thaka overhead shield wire a pore , abong main transmission line rokhha pay.
Switching over voltage 56:31
When Circuit breaker open ,it's behave a capacitor which frome a LC oscillator with line inductance
Vmax = 2 Vs
If voltage rating > 345 KV
Then , insulation is proposonal to switching over voltage
Dhonnobad bhai! Thanku❤
@@SurashreeBhowmik swagotom .
Great ❤ .. bahut bahut dhanyawad 🙏
Thanks vai.
Thank you sir❤
due to deference b/w voltage of cloud and ground.
Thank you sir
Class 5:47 se suru h .....😀😀😀😀😀
Notes kaha se milega
Vs(1-coswot) -> when wot is pi , then Vmax=0 not 2Vs
Sone, chandi ki taar to banaoge nhi varna bhale hi public ko shock lag jaye, public utar ke le jayegi😂🤣🤣😂
First time itne acche se kahi smjh aaya lightning effect...very well explained sir....thanks a lot
Je ka liya kam aiya ga boliya
Samik Pal, whoever you are
Thank you soo much for the playlist!!
It's impossible without Ankit sir
Kya seen h 🥴
Power Systems Complete Playlist: ua-cam.com/play/PLs5_Rtf2P2r5tl_TgUqApSbUX720qkBTL.html
Sir ... please reply me that whether a new comer can study power system with the help of this playlist...I mean ... should one begin with it?
sir ,,where can i get notes,,iam upsc aspirent
Sir ,please provide the notes
Sir how we get theory notes?
Starts at 5:45
Sir you have done really great work for all students who can't afford coaching classes. Sir thank you so much... I heartly respect your work sir...
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+ and - , charge separated by a distance but still bound together 👫 ... Known as dipole🙂
Nice explain through 👩❤️👨
Thank you bhai, huma toh pta hii ni tha 😂😂
Pls add english translation below , because other states people also understand, it's my humble request
sir plz provide direct link for notes .. b cz it is difficult to find topic wise notes from telegram for those student who could not attend the live class as there is a so many massages in telegram grp
Yes sir plz provide
Watching your lecture in 2023 November 😊
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thanks sir for keeping our concepts clear.... we are with you
Yes
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dipole___two opposite charges seprated by a distance but still bound together is callsed as dipole
_
Big fan of u sir.....
Notes telegram group pe nahi mila hai power system ka 1 and 2 day ka please share the notes
muje bhi bta dena...please....link mile to
But I found the link & got pdf , dear
Bta do yr iska notes knha hai mai bhut search kiua but nai mil
Sir PLZZ use only English many people don't no hindi🙏 apart from that ur awesome
But many people don't know English also
Sir aap idhar hi ITNA behatar class le rahe h Thanks
Outstanding performance .
17:08 sir, moving charge creates magnetic field.how electic field comes and cause corona ?
+ and - charge seperately by distance but still bound together
A saperated positive & negative charge of a atom but also bound together called dipole
Lightning because of when different charged cloud comes in contact with each other
Pdf kidher milti hain PlS anyone suggest
Gold and silver wires could be stolen throughout the world in all countries not just India.
The distance between two poles separated by bound together .
Class is entertaining with ur jokes😂😂
Agar Current ki direction jaana ho to tum electron bankar ghus jao line mein😂😂😂
Sir lighting occurs due to the Collision between the clouds or an imbalance occurs between the clouds and ground and the air surrounding Vibrates and creates thunder finally produce an electric discharge which is known as lightning
Can anybody tell me...this is power system 1 or 2....
Lightning occurs due to free charges that present in our atmosphere .
Moving particles In cloud get ionised and hence carry charge. Whenever charge particles Collide with the Opposite charge particles then lightening happen..... opposite charge particles may moving nearby the earth's surface.
whenever charge particles collide with neutral atom under the influence of electric field (which is generated by power line ) then light&sound generate. that is corona
Sir apne machine ke lecture me btaya tha ki aluminum ki tar nhi bna skte h...uski sirf sheet bna skte h....🤔🤔
Sir lighting current ka use hm transmission line me nhi kr skte
Lighting current ko over head line se ground nhi krke use direct transmission line me uska use nhi kr sakte kya sir
Sir's voice and face are very similar to MS Dhoni 😂
Lightning over voltage occurs due to potential difference between the two clouds which have opposite charge on each other or in single cloud in which opposite charge developed in two sides or between earth and cloud ☁️ is greater than dielectric strength of mediam between them.
lightning ground pr aati h kuki ak atmospheric capacitor ban jata h, in this cloud and earth surface work as capacitor plates and between these two, atmosphere work as an insulating medium, or jab clouds pr jyada charge collect ho jata h tab hota h dielectric breakdown , or cloud or earth k beach charge flow hota h.
Electron banke ghus jao 😂😂😂😂
Hello sir you are doing selfless service for financially unstable students,god bless you sir regards
they are seperated by distance but bound together
the lower surface of the cloud is negatively charged and the upper portion is negatively charged. now when two clouds rubes each other then a huge amount of charge transfer occurs in between the clouds. and if the time constant of this charge transfer is low than a huge amount of current flows between the clouds. this is why we have seen sparking or lightning.
thank you so much kreatryx channel...Love you sir ji❤❤❤
Bhai notes ki pdf kaha hai...
Sir mai apk channel se avi join hui to plz mujhe bataiy mujhe power system k notes kaise milege
Lighting
When Positive charge will explore negative charge till the lightning strikes or thunders
Two ice are collide each other then charge is induce
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Lighting is Charge flow in the cloud
when a negative and positive charge are separated by a distance but bound together is called dipole
Well said...
Transmission lines are connected in delta...
28:00 Wire dekh kar agar current ki direction bata do to tum insan nahi bagawan ho😂😂😊
Am I the only one who is facing lag issue with this video ?
lightning indused due to friction of clouds
Sir please Notes available karado🙏
Clouds ka uper ka sira positive hi kyu hota h?
This board is so much better than the white board 😍🤩🤩🤩🤩
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Sir notes available kara dijiye plz
Ye unacademy waale pdhate km ehsaann jyada krte hain.
Have anyone power system notes??...
When a lot of ions neutrilize, lighting occurs...
Due to force of clouds
Video is having some problem.i can't see live.it has some technical issue.video and voice is not in synchronism....pls check sir
Sir Please check sound and image are not synchronism
Can anyone provide me the notes?
Indra dev ka hatiyar weapon😂😂
Too lagging class please makeas fast
Sir transmission line ka critical impedance hamesha constant kaise rahata h jabki itana inductance aur capacitance h aur hamesha Resistive kaise
Sir aapka sara lecture ka picture nhi dikh raha tha 😔
Sir Lighting Over voltage kaliya agar humna Shield wire sa ground may pass kar diya then Lighting Over voltage ka base pay Insulator ko kyue add Kara line (Under 345 KV) may??
Sir iska pdf Khan milega
Very attractive presentation , thanks sir
Hm line ki direction bhi pta kr skte h
Lightning is caused by cloud friction
Thanks a lot sir
Sir, Transmission line ko insulation nahi hota kya jaise hamare household wires ko hoti hai.
dought cleared sir...
Dielectric Breakdown
Collision between clouds
Kya tmlog ka v lag issues aa rha h is video me
Yrr koi notes Vali link share kr do
Okay! So I used to think Indra uses his Vajra to make those lightning ⚡ occur!!😂😂
😂😂😂
Sir, your video is very helpful for us.
Video start at 6:00
@Nitish I don't have time and even 4-5 minutes shouldn't be wasted of any GATE aspirants
Sir aap jaise Teacher humme University m mil jaaye to hum backbencher bhi top karenge power system m,,,,👍👍👍👍
Bilkul
This method is better ji
Sir, why the magnet is not a dielectric or insulator, but still the magnet have dipole... ?