Understanding Line Distance protection (21)

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  • Опубліковано 4 вер 2024
  • End-to-end testing can appear to be a daunting task. However, any relay tester can perform successful end-to-end tests with a basic a basic understanding of transmission line protection (or 21 impedance protection) along and some preparation before the testing is scheduled to begin.
    The second video in our end-to-end testing series continues our introduction to transmission line protection (also called impedance protection, 21-element protection, or line distance protection). We perform a series of end-to-end tests on a normal transmission line with standard line distance protection and compare the results to a POTT scheme to see how standard distance protection is different than communication-assisted tripping schemes.
    You can play with these animations at our website relaytraining.com/. Each of the most commonly applied protection schemes have their own animations and they can be found at relaytraining.c....
    The standard line distance animation can be found at relaytraining.c....
    The POTT scheme animation can be found at relaytraining.c....
    This video expands on the descriptions found in The Relay Testing Handbook: Principles and Practice, Testing Line Distance Protective Relays (21), and End-to-End Testing. You can order any of these books in print or as digital pdf downloads at our store (relaytraining.c....

КОМЕНТАРІ • 105

  • @jayschumacher815
    @jayschumacher815 6 років тому +7

    Thank you for all the hard work making these videos available to the public. It is much appreciated.

  • @suryanath8464
    @suryanath8464 6 років тому +9

    The best lectures I saw on Distance protection...

  • @sailorneptune50
    @sailorneptune50 3 роки тому +2

    one of the best description of this topic

  • @israel_theengineer
    @israel_theengineer 2 місяці тому +1

    shortest explanation i ever heard, thank you!!!!

  • @rezashah91
    @rezashah91 5 років тому +3

    full detail and thorough description, thank you...

  • @mt.penguinmonster4144
    @mt.penguinmonster4144 2 місяці тому +1

    This is a high-quality explanation

  • @paulohenriquebarbosa7479
    @paulohenriquebarbosa7479 5 років тому +1

    These materials will certainly help me on doing my job.

  • @ayushshringi6993
    @ayushshringi6993 8 років тому +2

    Very precise and great use of graphics. Thanks for uploading.

  • @dianacruise40
    @dianacruise40 5 років тому +2

    Fantastic. Thank you so much for this video.
    it’s very useful to understand how distance relay work.
    More videos please.

  • @njiodjipaudrey8599
    @njiodjipaudrey8599 4 роки тому +1

    Best lecture on 21 relay

  • @prasanthlaksumanan1281
    @prasanthlaksumanan1281 3 роки тому +1

    It's very clear and understanding for everyone 🙏

  • @gregoryhinshaw701
    @gregoryhinshaw701 6 років тому +1

    Good explanation of POTT Schemes.

  • @melitongojo4992
    @melitongojo4992 8 років тому +1

    Very clear explanation! Thanks. At last, now I understood them.

  • @fredr4258
    @fredr4258 6 років тому +1

    So far so good. Vids 1 & 2 seem very good. I've picked up a few things. Thanks for creating these vids and sharing them!

  • @juanpcie
    @juanpcie 7 років тому +2

    Excelente explicación de la función 21. gracias por el video.

  • @vincentgoh7984
    @vincentgoh7984 2 роки тому +1

    Thanks for the efforts

  • @AhmedKhaled-im1xs
    @AhmedKhaled-im1xs 7 років тому +1

    Deep Informative .. Simple Explanation .. Thanks For Sharing .. Keep Going

  • @ZahidHussain-wk1zl
    @ZahidHussain-wk1zl 5 років тому

    Great explanation... Very easy to understand...

  • @TrungNguyen-kp7pv
    @TrungNguyen-kp7pv 8 років тому +3

    Plz make more the videos like this, i love it! Thank you

  • @ricardoglover3449
    @ricardoglover3449 6 років тому

    Great explanation.

  • @iftekharbokshi7843
    @iftekharbokshi7843 2 роки тому +1

    Thanks for sharing. Very well explain

  • @sherubwangdi8552
    @sherubwangdi8552 5 років тому

    looking forward for more lectures on other protection schemes too

  • @deeputube100
    @deeputube100 7 років тому +1

    Thanks for making it so simple

  • @siddharthalakkakula9475
    @siddharthalakkakula9475 5 років тому +3

    And please continue in making videos like this. Thank you for a great presentation. I really loved it!!!

  • @subramanimuthusamy5970
    @subramanimuthusamy5970 6 років тому +1

    Excellent video and very useful to me..

  • @azzammeeralam7182
    @azzammeeralam7182 6 років тому +1

    I wish our professor showed us that video in class.. Now I clearly understand what he was talking about

  • @juliofh5623
    @juliofh5623 8 років тому +1

    Thanks for uploading this video. Nice and clear, great job.

  • @NatrajTNatarajant
    @NatrajTNatarajant 9 років тому +2

    VERY NICE AND CLEAR EXPLANATIONS

  • @apd6750
    @apd6750 7 років тому +1

    Thank you very much for the presentation! I would like to know how to calculate the magnitude of the worse case when the fault falls on zone 3 of relay.
    thank you!

    • @Relaytraining
      @Relaytraining  3 роки тому

      You'd have to model the system and decide how far, and in what direction, you want zone 3 to protect.

  • @chrispalmer853
    @chrispalmer853 9 років тому +1

    Great presentation

  • @londangema8282
    @londangema8282 4 роки тому +1

    Sir, you are amazing.

  • @samirdarji5237
    @samirdarji5237 6 років тому +1

    superb understanding video

  • @pujum
    @pujum 8 років тому

    A very clear and informative video, thanks!

  • @abburipavan1565
    @abburipavan1565 4 роки тому +1

    Good work can u provide same to other protections

    • @Relaytraining
      @Relaytraining  4 роки тому

      We're in the middle of a book right now. Hopefully we'll get back to some videos this year.

  • @fabifahrizal3931
    @fabifahrizal3931 Рік тому +1

    pls update more training videos

  • @sonumehta5847
    @sonumehta5847 9 років тому

    Excellent presentation

  • @greasyfingerss9811
    @greasyfingerss9811 6 років тому

    Epic video, really intuitive! keep the excellent work!

  • @rodeopriya
    @rodeopriya 6 років тому +1

    Good animation

  • @user-lk8ys7qy4c
    @user-lk8ys7qy4c Рік тому +1

    Thanks.

  • @shahidstark7308
    @shahidstark7308 6 років тому +1

    Very much helpful . thank you. Keep doing

  • @007NateNasty
    @007NateNasty 9 років тому

    Thanks for the video. This was very useful information.

  • @ameerhamza7385
    @ameerhamza7385 Рік тому

    How to understand forward and reverse direction for zone settings? Like in case of Relay2 we have set zone 1,2 from right to left but similarly for Relay1 its zone1,2 is from left to right!

    • @Relaytraining
      @Relaytraining  Рік тому +1

      Forward is towards the protected device (the line in this case), reverse is current flowing away from the protected device.

  • @doudou177
    @doudou177 5 років тому +1

    every good, thanks you must great man. perfect voice!

  • @user-tr4ge9oo9m
    @user-tr4ge9oo9m 8 років тому +2

    Very clean explanation. Like and subscription :)

  • @ameyamungi7993
    @ameyamungi7993 6 років тому +1

    Very Informative. Thanx :)

  • @davronengineer2519
    @davronengineer2519 8 років тому +1

    Thank you ever so much !

  • @beltsahdo12335
    @beltsahdo12335 7 років тому +1

    Good job fantastic video

  • @TrungNguyen-kp7pv
    @TrungNguyen-kp7pv 8 років тому +1

    Amazinggggggggggggggggg! it's very helpfull for electrical engineering

  • @holy_quran_karem
    @holy_quran_karem 8 років тому

    Thank you .. simple and straightforward :) =D

  • @phamquyen0201
    @phamquyen0201 3 роки тому +1

    pls make video with 78 function for generator protection

    • @Relaytraining
      @Relaytraining  3 роки тому +1

      I'll put it on the list. In the meantime, I have a whole chapter dedicated to 78-Protection and testing in The Relay Testing Handbook: Generator Relay Protection Testing

  • @janavax
    @janavax 9 років тому

    Excellent presentation. I have a question. Line distance protection advantage is its independence on change of the system beyond of the zone of protection (because is based on impedance) but is always described in scenarios where power flows in both directions, there are various zones of protection and a pair of relay are used, one at each extreme of the line. But in cases where there are just one zone of protection and unidirectional energy flow (for example in my case, a 40 KM 115kV single line feeding a radial/terminal substation), does it make sense to use line distance protection just at power source side?.

    • @Relaytraining
      @Relaytraining  9 років тому +1

      +janavax
      Sure. Many generator protections schemes apply distance protection looking out toward the system with significant time delays as backup protection to isolate the generator from faults external faults not cleared by external devices. Impedance protection would be applied anywhere that you want to create a specific zone of protection and can predict the impedance of that zone.

  • @alinaji6362
    @alinaji6362 7 років тому +1

    Thank you very much

  • @JatinderSingh-cs1kh
    @JatinderSingh-cs1kh 4 роки тому

    Communication assisted Protection Schemes could be good because the fault should be cleared in minimum time in order to save all the protection equipment and self isolate the Transmission line

  • @franklinelectricaciem
    @franklinelectricaciem 7 років тому

    Excelent video thanks for sharing it!!!

  • @vivekanandanbalakrishnan2035
    @vivekanandanbalakrishnan2035 7 років тому +2

    hi your videos are very helpful..am working in electrical protection designing..plz give me a video link that you mentioned as1st video of distance protection

  • @MoHersh
    @MoHersh 7 років тому

    MRS WATTON WHATS GOOD!

  • @pd7480
    @pd7480 9 років тому

    Hi I was wondering, what criteria would determine a communication based schedule like pott, or Ducb etc.
    I know line differential is used when line SIR is very high and distance based protection cannot be applied.
    You also mentioned that grid can't handle large duration of fault contribution.
    Can you please give a real world situation,

    • @Relaytraining
      @Relaytraining  9 років тому

      Parminder Dhawan
      Some choices are based on Technology such as line differential (need fiber), DCB or DCUB (need carrier equipment). PUTT schemes shouldn't be used in systems with weak infeeds.
      I was more talking about equipment rather than the grid. All equipment on the grid can withstand some fault current for a short duration. The longer the duration, the more the insulation breaks down or arcs form.

  • @hibazuberi140
    @hibazuberi140 7 років тому

    great work!
    is this mho relay or impedance relay that is being used?

    • @Relaytraining
      @Relaytraining  7 років тому

      An MHO relay is an impedance relay with a circle characteristic

  • @siddharthalakkakula9475
    @siddharthalakkakula9475 5 років тому

    Can you please explain the difference among POTT, PUTT, DCB schemes

    • @Relaytraining
      @Relaytraining  5 років тому

      You can follow this playlist ua-cam.com/video/s_IrsNHv4aQ/v-deo.html, or buy The Relay Testing Handbook: End-to-End Testing relaytraining.com/relay-testing-handbook-series-v3/

  • @rengaramanujan
    @rengaramanujan 6 років тому

    Nowadays distance relays modeld like D60 P742, REL670 are coming with 5 zones. what's the advantage of increasing this zones. Line differential are used only if the lines are less than 10km . How to communicate with remote end relay

    • @Relaytraining
      @Relaytraining  6 років тому

      The only advantage is increased flexibility for users who want to fine-tune their zone protection. I can't believe the maximum distance for a fiber optic connection between two line distance relays is 10km. Can you send the source information with this limit?

  • @yohannesedillu9496
    @yohannesedillu9496 9 років тому

    hi all are nice works thank u !

  • @mohdalarbab1145
    @mohdalarbab1145 6 років тому

    Thanks so much -Now am researching for distance relay scheme plz I need support

  • @oussamaaatiq8293
    @oussamaaatiq8293 8 років тому

    Thank you for this presentation!
    I'd like to know whether there are softwares that allow to test and simulate distance peotection.
    Thanks again

    • @Relaytraining
      @Relaytraining  8 років тому

      Thanks for the comment. You can try these animations relaytraining.com/tag/line-distance-protection-21/

    • @mohammadalzyoud3990
      @mohammadalzyoud3990 7 років тому

      Valence Electrical Training Services

    • @Relaytraining
      @Relaytraining  7 років тому

      Not that I know of other than the ones in the comments.

  • @ricardozelaya233
    @ricardozelaya233 6 років тому

    Nice chanel, and grate vídeo

  • @mukul039
    @mukul039 8 років тому

    Thank you for the tutorial... :-)

  • @user-lj1zq2zi6k
    @user-lj1zq2zi6k 8 років тому +1

    so good ..

  • @HarshPatel-jy4qf
    @HarshPatel-jy4qf 4 роки тому

    Is this the same as three stepped distance protection?

  • @electricaltech4u45
    @electricaltech4u45 6 років тому

    Nice bro

  • @whistleblower4922
    @whistleblower4922 4 роки тому

    Sir can yu explain about zone protection

  • @didilgialorosso8582
    @didilgialorosso8582 6 років тому

    thank you sir, can you share the software used to make this animation please?

    • @Relaytraining
      @Relaytraining  6 років тому

      They were created in flash and you can play with in the link in the description.

  • @shahzadhashmi1454
    @shahzadhashmi1454 8 років тому

    hi... can u p[lz share video on relay settings calculations & distance relay testing... thanks in advance

    • @Relaytraining
      @Relaytraining  8 років тому

      +Shahzad Hashmi Thanks for your comment. I've put your request on the list, but it is pretty far down at this point. We plan to put out more videos in 2016.

  • @lorenzodinizar
    @lorenzodinizar 7 років тому +1

    GOOD

  • @yalcntan6819
    @yalcntan6819 5 років тому

    TS?

  • @user-iu7rs5qq5t
    @user-iu7rs5qq5t 6 років тому

    Please ziv

  • @anantrampal376
    @anantrampal376 2 роки тому

    Hindi me bnaye sir

  • @mufudzifoto7964
    @mufudzifoto7964 4 роки тому

    waseva