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!
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!
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
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?
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,
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.
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
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?.
+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.
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/
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
+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.
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
Thank you for all the hard work making these videos available to the public. It is much appreciated.
The best lectures I saw on Distance protection...
one of the best description of this topic
shortest explanation i ever heard, thank you!!!!
These materials will certainly help me on doing my job.
Fantastic. Thank you so much for this video.
it’s very useful to understand how distance relay work.
More videos please.
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!
full detail and thorough description, thank you...
Good work 👍
Very precise and great use of graphics. Thanks for uploading.
+ayush shringi Thanks
Best
This is a high-quality explanation
Very clear explanation! Thanks. At last, now I understood them.
It's very clear and understanding for everyone 🙏
Plz make more the videos like this, i love it! Thank you
Best lecture on 21 relay
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!
You'd have to model the system and decide how far, and in what direction, you want zone 3 to protect.
Excelente explicación de la función 21. gracias por el video.
Good explanation of POTT Schemes.
Deep Informative .. Simple Explanation .. Thanks For Sharing .. Keep Going
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!
Forward is towards the protected device (the line in this case), reverse is current flowing away from the protected device.
Thanks for uploading this video. Nice and clear, great job.
Great explanation... Very easy to understand...
And please continue in making videos like this. Thank you for a great presentation. I really loved it!!!
Good work can u provide same to other protections
We're in the middle of a book right now. Hopefully we'll get back to some videos this year.
looking forward for more lectures on other protection schemes too
Thanks for making it so simple
Epic video, really intuitive! keep the excellent work!
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
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?
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,
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.
pls make video with 78 function for generator protection
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
Excellent video and very useful to me..
I wish our professor showed us that video in class.. Now I clearly understand what he was talking about
Thanks for sharing. Very well explain
Is this the same as three stepped distance protection?
Yes
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?.
+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.
A very clear and informative video, thanks!
+Phil Moseley Thanks
Can you please explain the difference among POTT, PUTT, DCB schemes
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/
VERY NICE AND CLEAR EXPLANATIONS
Thanks for the efforts
Thank you for this presentation!
I'd like to know whether there are softwares that allow to test and simulate distance peotection.
Thanks again
Thanks for the comment. You can try these animations relaytraining.com/tag/line-distance-protection-21/
Valence Electrical Training Services
Not that I know of other than the ones in the comments.
Sir, you are amazing.
pls update more training videos
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
got it...
can you send to me also
put the link here please
thank you sir, can you share the software used to make this animation please?
They were created in flash and you can play with in the link in the description.
hi... can u p[lz share video on relay settings calculations & distance relay testing... thanks in advance
+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.
Great explanation.
Thanks
Great presentation
Sir can yu explain about zone protection
That's what this video is about
Thanks for the video. This was very useful information.
Thanks. Glad you liked it
Excellent presentation
TS?
Very much helpful . thank you. Keep doing
Very clean explanation. Like and subscription :)
superb understanding video
every good, thanks you must great man. perfect voice！
great work!
is this mho relay or impedance relay that is being used?
An MHO relay is an impedance relay with a circle characteristic
Very Informative. Thanx :)
Amazinggggggggggggggggg! it's very helpfull for electrical engineering
Thank you ever so much !
Good job fantastic video
Thank you .. simple and straightforward :) =D
+mohamed yassin Thanks!
Good animation
Excelent video thanks for sharing it!!!
Thank you very much
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
Thanks.
MRS WATTON WHATS GOOD!
so good ..
hi all are nice works thank u !
Thanks so much -Now am researching for distance relay scheme plz I need support
Nice chanel, and grate vídeo
Thank you for the tutorial... :-)
+Tanvir Ahmed Thanks!
Nice bro
GOOD
Please ziv
Hindi me bnaye sir
waseva