Power System: AC Power Supply System
Topics Discussed:
1. AC power supply system layout.
2. Why thermal power plant is constructed away from human population.
3. Why nuclear power plant is constructed away from human population.
4. Why hydro power plant is constructed away from human population.
5. Need of long distance transmission lines.
6. Need to step up the voltage.
7. Generating transformer.
8. Standard transmission voltages.
9. Line and phase voltages.
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Music:
Axol x Alex Skrindo - You [NCS Release]
https://www.youtube.com/watch?v=sA_p0...
- AIEFA PATNA for GATE/ESE: pls upload power system cgapter by chapter
- Akshay Bose: Thanks sir
- Karthik Reddy: Could you say me please
- Akanksha Pathak: Why are we stepping down the voltage while transmission?
- Sandip Prajapati: Superb video very easily understand good
- Pralay Aryan: @nesco academy thankyou so much brother u got me prepared for my interview.
- eric owino: fantastic. am studying power engineering and i really like your explanation
- Alex stevensen: The high voltage part is connected in delta configuration there is no neutral to connect. Even if the load is unbalanced it works. Say the final output side is in a Y configuration then if one phase is loaded more then that translates to the primary side of the transformer into an extra current draw of one of the three coils in delta say between L1-L2. That extra current simply gets delivered by the corresponding delta coil at the power station, the current in the other two coils and their shared line L3 stays the same, the system works even when 'unbalanced'. The power station acts as a delta 3phase voltage source you can load it in any way you want you could even hook-up just one coil/phase between L1 and L2 and it would work.
- SWETA KUMARI: nice video sir
- Karthik Reddy: The potential of neutral wire is zero.Then how current flows in birectional i.e.,ac
- Ch Rajasekhar: Sir why in india the ac voltage is constant ie; 230v, 50HZ, what happens if the frequency or voltage changes?
- Feel good to see patel: Pleade
- tab: why step up after generating when we have to step it down finally?pls replu sir thanks in advance
- Pranjal Barman: most helpful video
- ShEbA sMiLy: Near 7:40 p=i^2R true but p=v^2/R is also true so if we increase voltage and since R is constant so ain't power dissipation will be more. I know the ans but why and how ☺. Pls reply if anyone knows
- Bipin Jha: What is highest primary and secondary distribution voltage?
- Ajaykumar mahera: why there is no return path(neutral) for 3-phase load????
- Saurav nagarkoti: sir 33kv is a transmission line or a distribution line? very confused
- Rupankar Borah: Sir why we need so many power transformer? Instead can we directly step down 400kv to 11kc
- alan sanchez: Thanks so much for the video
- rupam9423: Cant we have only one substation ? as one station is enough to step down that large voltage installing a transformer of that much capacity.
- NAGA CHAITANYA VEMURI: Is every house is getting single phase power only???
- shoikot hassan: Nice sir..respective salute to you
- TheDestroyerTown873 Official: Huh, thanks for the voltage type.
- Nihal Pavar: Very good
- pragati bhogunkar: super sir it's so help full 👌👌👌
- Saurav nagarkoti: but I think it comes under secondary transmission
- rajendra singh chundawat: Superb dear Great explain more video about sub stations ht power please
- KISHORE MADDI: why only we divide it with root 3 not any other number .is it because of three wires r, y,b??????????
- Phani Kumar Tellagorla: can please tell why frequency of the supply is limited to 50hz why not the other
- Abbas Hussain: One of the best n easiest explanations any one can give..... Salute to sir
- tab: ShEbA sMiLy same dobt
- Alex stevensen: The short or usual answer is that those three currents cancel each other out. But that's not even necesary it's three voltage/power sources in a triangular formation. It's a bit the same when you connect two DC power supplies together +12 volt and -12 Volt they have a common ground but you can load it any way you want, they are really 'independent' although they share one single common wire. It's the same thing but then in a delta configuration and AC. The lines are shared but the sources can work 'independently' so to speak. The currents always cancel each other out but it doesn't have to be in a three phase sense it also works 'unbalanced'. It doesn't have to be fully 'symetrical' in a three phase sense.
- NAVNEET SABRE: hi. thats a great question. in my opinion the power are dropping gradually not directly because....... 1.if power drops directly then rating of transformer is very high and the losses of transformer increases. 2.transmission lines needs to maintained. high power is flowing through it over long distance leads to higher losses. 3.if we done that what u had thought so might be we save loss in energy,but simultaneously cost of the system increases drastically. see i may be wrong. but i think this is the best suitable answer which i have.:)
- Oleg Isaev: for example if we double the voltage, in order to get same power(lower amp by 2), we have to increase total resistance by 4.times(doing that by increasing the impedance of the transformer), and since the resistance of the wire stays the same and this is a series circle, now the (Rwire/Rtotal) will be smaller fraction than before. in some rough calculation it will shows that voltage drop across the length of the wire will be twice smaller and since the amp is lowered too, the power dissipation across the wire will be somewhere around 4.times less.
- kamran kami: small industries need 25 KW medium industries need 25 to 100 KW large industries needs more then 500 KW Housing societies usually needs 400 V L-L So due to this variation of loads we cant give 11 KV to all consumers
- Dheeraj ojha: Sir why have you stopped making videos regarding power system... Plz cover complete power system... Plz
- kamran kami: to decrease losses
- Nikhil Shendge: Just 18 min vdo but I must say sir u clr all concept which I don't understood in my entire engineering! 😇
- PANKAJ PAL: these video so helpful thanks for this
- CRAZY INDIAN: few more like neso academy , and whole business of coachings will come to end.. you really did a fab job bro..
- Fahim yaman: Please make videos on control system as well. Too good. 👍
- ahia ali: Thanks mate helped a lot!
- Koppula Sridevi: Why u have taken the transmission part along that much of length only????
- Pravin Kumar: Rupankar Borah Because we have to transmit Power to different area( states). If We directly Step down to 11 kv and then send to all the area then there will be high transmission losses. and some residitensal area Reqire 33 Kv too.
- sanjit kumar: Sir. please upload all power system videos
- sharaban tahora: thanks for the lesson. is there any way when i can recognize transmission part without looking at the diagram?
- hussein shutari: thank you so much, actually your manner is very wonderful. some things else, could you explain one lecture by your manner about per unit system, what does it mean and some examples how to solve a practical problem in term of per unit system.
- Mahesh Sanapala Janasena: Please upload all the videos of power systems
- Atul Patil: Important point didn't mention ,,,connection of generation transformer ,transmission transformer and distribution transformer
- Hasib Cheragee: thanks for your clear explanation
- Alex stevensen: Ok I'm trying to figure out what would happen when the power transformers are in Y config. With a connecting neutral the neutral would carry the difference. Offcourse they don't like a neutral because normally it doesn't transport any power. If you were to omit the neutral and still use Y then I guess that current would show up in the other two phases but that would be out of phase I guess, so called blind current. It would show up 120º out of phase in L2 and L3 at the receiving transformer and they add up to a total 90º out of phase in the L2 and L3 lines. It will work but it will generate extra out of phase currents but that would otherwise be carried by the neutral so in the end there's not much difference I suppose. But I'm not sure all of this is correct. It get's somewhat more complicated when the recieving transformer is in Y and the power station in delta. Those to 'systems' are 60º apart so to speak. So it's like a Y loading inside a delta source. One Y phase gets it's power from two delta coils and the third delta is at 90º. So an extra loading on one phase would be delivered by two coils at the power station. It's a little bit difficult to figure out what happens with regards to blind current in this situation. The extra Y current is out of phase with each of the delta coils, I guess those two swap 90º out of phase current back and forth. But that current would have to flow through the lower part of the schematic but that part is 'symetrical' to the upper Y leg. No wait they deliver that out of phase current to the upper leg together there's no 'net' 90º current there, they add up (logically). Anyway.. I'm not a power distribution engineer, interesting subject though. Oh one more thing the mid in a Y receiving transformer (without neutral, unconnected) would not start to 'float' in case of unbalance it's not like resistors it's a transformer those voltages are 'fixed', the mid point stays in the middle even if only one coil is delivering current. Besides some small effect from some copper resistance.
- pooja rani: thanku
- SUCHITRA BADOLA: I have a question when we are stepping Up the voltage by using step up transformer the energy transmit to 11/400 kv but at the receiving end next transformer we received 400 kv energy so why so much energy waste in stepping up at previous transformer. The energy can be transmit at 220 kv even if we include IIR loss there is much energy.
- Suraj Bhushan: Thanks sir please upload next video as early
- Saikat Dutta: acc to ur 'v' it must be pot diff between the sending and receiving end...not only of sending end.Mind that p=v^2/R is loss only when 'v' is pot diff across the resistance(R).
- Ritayan Mitra: awsome lecture sir _/|\_
- Mansoor Ahmad: Distribution line
- Kean Choung: can you tell me about auto- recloser operation ?
- Salma Aga: Sir plz upload , gate eee lectures
- Jack Krieger: Great video.Very nice explanation.
- Feel good to see patel: Sorry its please
- Damyom Gamlin: Please make videos of all portions
- guddu babu: please upload all power system vidio
- SANJIT EKKA: Thanks sir This video helps me a lot
- rockstar maahi: Sir plz upload some more video related to power system
- Mohit awalekar: effectively explained sir !
- kailas watane: Nice explanation...Thanks
- SUCHITRA BADOLA: sharaban tahora it's kv
- Jimmy Yuson: Sir may i ask if there is a standard distance between lines of a transmission line...
- guddu babu: please upload sir
- Varsha Paliwal: Sir what is the means of phase in electricity or electrical engineering
- Akanksha Pathak: Why are we stepping down the voltage while transmission?
- Kc Balaji: How to STEPUP 230V to 600v
- RAKESH SINGH: 3 phase voltage is how many ?sir,please leply
- kamran kami: primary distribution
- Henry G: Well done very good example!
- Nikhil Shendge: Sir, how to recognize generation, transmission, distribution part?
- Aashirwaad Ajeet: very nice explanations sir
- mounika monu: Please upload remaining videos of power systems
- Guled Farah: You are really amazing and thank you very much!
- sharaban tahora: its 400V not KV
- guddu babu: thank u so much sir
- Feel good to see patel: Do more videos sir
- Ravidas Sonkamble: Your lecture...much benefit..to everyone
- panorma view 360 view: Great job sir. We are paying lakhs only for attendance
- mudabbir ali: what will happen if i connect my house with only Red and Blue wire. will i get 400V?
- Kean Choung: thank you for your good lesson
- Against Reservation: Excellent Man!
- rohit Singh: I want the lecture of microprocessor . Can u get this or not ... Plzz do it
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AC Power Supply System | |
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| Education | Upload TimePublished on 24 Jan 2017 |
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