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Valence Electrical Training Services
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Добавлен 14 мар 2013
An online channel for relay testers to discuss protective relay testing techniques and training basd on the principles of The Relay Testing Handbook
Understanding PUTT Communication Assisted Protection Schemes
We're continuing our end-to-end testing series by looking at the Permissive Under-Reaching Transfer Trip communication-assisted trip schemed. You can read the transcript at relaytraining.com/understanding-putt-communication-assisted-trip-schemes-video/
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.com/tag/end-to-end-testing/
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...
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.com/tag/end-to-end-testing/
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...
Просмотров: 14 586
Видео
Understanding Permissive Over Reaching Transfer Trip POTT Communication Assisted Trip Schemes Video
Просмотров 38 тыс.6 лет назад
We're continuing our end-to-end testing series by looking at the Permissive Over-Reaching Transfer Trip communication-assisted trip schemes. You can read the transcript at relaytraining.com/understanding-permissive-over-reaching-transfer-trip-pott-communication-assisted-trip-schemes-video/ You can play with these animations at our website relaytraining.com/pott-animation/. Each of the most comm...
How to Communicate With Relays and Test Sets With Ethernet Communication
Просмотров 6 тыс.7 лет назад
Sometimes the hardest part of relay testing is getting your laptop to talk to the relay or test-set. The previous video in this series demonstrated serial connections between your computer, relays, and test-sets. We highly recommend you watch it first at ruclips.net/video/tNS-qamFPjc/видео.html. Watch this video to learn how to connect to a test-set or relay via Ethernet communication. Get more...
How to Communicate With Relays and Test Sets Via Serial Communication
Просмотров 10 тыс.7 лет назад
Sometimes the hardest part of relay testing is getting your laptop to talk to the relay or test-set. Watch this video to learn how to connect to a test-set or relay via serial communication. The next video in this series discusses Ethernet communication. You can watch it here ruclips.net/video/zvRCxI31R2g/видео.html Get more information in the blog post that spawned this video series at relaytr...
Direct Transfer Trip and Direct Under-Reaching Transfer Trip Schemes Video
Просмотров 36 тыс.8 лет назад
We're continuing our end-to-end testing series by looking at the two simplest communication-assisted trip schemes used. Watch this Direct Transfer Trip and Direct Under-Reaching Transfer Trip Schemes Video to learn more about these two schemes. You can read the transcript at relaytraining.com/direct-transfer-trip-direct-reaching-transfer-trip-schemes-video/. You can play with these animations a...
Thank You for Your Support!
Просмотров 7928 лет назад
Big Changes are Coming Soon at Valence Electrical Training Services. You can read all the details here. (eepurl.com/bPrgf9) 2015 was an incredible year for Valence Electrical Training Services. We: * Sold over 5,000 copies of The Relay Testing Handbook to date * Trained over 150 students in our hands-on protective relay training classes across the USA and Canada * Found new venues that allow us...
Phasor Diagrams for Relay Testers
Просмотров 43 тыс.9 лет назад
We just released our latest online training course about phasor diagrams for relay testers and this video summarizes the topics in that course: Waveform diagrams contain every detail of an electrical system, but that information can be difficult to understand without a lot of effort. Phasor drawings take the complex information embedded in waveform drawings and convert it into phasor diagrams s...
Understanding Line Distance protection (21)
Просмотров 175 тыс.9 лет назад
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 (als...
Transmission Line Protection (21)
Просмотров 174 тыс.10 лет назад
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 first video in our end-to-end testing series starts with an introduction to transmission line protection (als...
Understanding How Different Relays and Test-Sets Calculate Frequency
Просмотров 10 тыс.10 лет назад
Relays that use time delays in seconds are easy to test because seconds is an universal unit that can only be interpreted one way. Relays that use time delays in cycles are easy to test as long as the relay and the test-set use the same reference. Cycles can be defined by the generated frequency, or by the nominal (or system) frequency. If the relay and the test-set do not use the same referenc...
Understanding Microprocessor Based Relay Logic Part 4 - Relay Settings and Test Procedures
Просмотров 9 тыс.10 лет назад
This is a re-creation of the first paper I ever presented from the NETA conference in 2001 that was the foundation of The Relay Testing Handbook series. Part 1 gives a brief history of protective relays to see how technology has changed over the years and presents some pros and cons for each generation of relay. (ruclips.net/video/q_E_Gv_9_LQ/видео.html) Part 2 will discuss Digital Relay Logic ...
Understanding Microprocessor Based Relay Logic Part 3 - Relay Control Schemes
Просмотров 10 тыс.10 лет назад
This is a re-creation of the first paper I ever presented from the NETA conference in 2001 that was the foundation of The Relay Testing Handbook series. Part 1 gives a brief history of protective relays to see how technology has changed over the years and presents some pros and cons for each generation of relay. (ruclips.net/video/q_E_Gv_9_LQ/видео.html) Part 2 will discuss Digital Relay Logic ...
Understanding Microprocessor Based Relay Logic Part 2 - Digital Logic
Просмотров 12 тыс.10 лет назад
This is a re-creation of the first paper I ever presented from the NETA conference in 2001 that was the foundation of The Relay Testing Handbook series. Part 1 gives a brief history of protective relays to see how technology has changed over the years and presents some pros and cons for each generation of relay. (ruclips.net/video/q_E_Gv_9_LQ/видео.html) Part 2 will discuss Digital Relay Logic ...
Understanding Microprocessor Based Relay Logic Part 1 - History of Protective Relays
Просмотров 27 тыс.10 лет назад
This is a re-creation of the first paper I ever presented from the NETA conference in 2001 that was the foundation of The Relay Testing Handbook series. Part 1 gives a brief history of protective relays to see how technology has changed over the years and presents some pros and cons for each generation of relay. Part 2 will discuss Digital Relay Logic (ruclips.net/video/DEN-ZEtEZ5c/видео.html) ...
Thanks 👍
shortest explanation i ever heard, thank you!!!!
This is a very high-quality explanation.
This is a high-quality explanation
Dude these Video’s are BAD ASS!!! Thank you for taking the 1000s of hours and (TIME) to Produce Amazing content!!! 5 STAR!!! I walked around the switch yards dazed and confused now I know there is a structure to the operation and not JUsT FM
excellent video. Thanks for sharing
Superb .
Thank you, this video is excelent 😎
thanks sir which program for simulation
We had it custom made in articulate
ruclips.net/channel/UC1HLWRE0yyuht7aFmK1MQgg
Thanks.
Awesome 👏 thank you for the video 🙏
Hi sir, I have a doubt ..i connected 2 pt in same phase.for example In R phase .Say the first PT output is 1S1 and 1S2 and the second PT output is 2S1 and 2S2 .and i measured the voltage between 1S1 and 2S1.and i got 126V .Actually the voltage should be zero.because the i connected both PT in same phase.but iam getting voltage ..so what should be the reason.kindly help me.Hope you will understand my question
I love Colonel Volt
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.
pls update more training videos
Joia
Thanks for the efforts
I am an Indian graduated in electrical and electronics engineering , in india thare is no carrier options i would like to move to usa , how can I get a job thare
Very nice explanations, thanks. But we need more, we need to know the quadrants labels accordingly to the reference used U or I. This course does not explain anything about how the position and name of the quadrants are changed depending on the chosen reference.
That's an interesting take. I've been testing relays since 1995 and never paid attention to quadrant labels until I had to write something about it. Why would this be useful to a relay tester?
Hindi me bnaye sir
Thanks. Very informative.
yes thanks you
Thanks for sharing. Very well explain
This what i searching for last few weeks really very nice presentation and thanks for making available in free videos
Lol
This record was really interesting and useful. I really enjoy watching it. I really thank you for preparing such a video.
Great video and hello Real Pars narrator!
The video sound is pretty good, beyond my imagination
Differential protection with communication how it will work
Thanks ad for good video!
Wow. This video is really good. Your explanation is so clear.
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
Hi, I like your lecture. Thanks
👍
Thank you very much~!! It is great explanation.~~~!!!!
How to choose permissive schemes (PUTT or POTT) for a line?
You have to do a system study to see if your system has enough energy to over-reach or under-reach, then decide whether you want security or reliability.
one of the best description of this topic
It's very clear and understanding for everyone 🙏
I would love if you would compare POTT vs PUTT, cause I can't see the difference. Yes i understand that the PUTT only transfer a Z1 puckup, and POTT looks at Z2 pickup. But could you make an example where it would behave differently? Thank you.
The POTT Video at ruclips.net/video/vVSDE59vJlc/видео.html shows an example of a POTT scheme failure that wouldn't have happened if a PUTT scheme was applied because the Under-reach transfer trip signal would never have been sent in the first place
@@Relaytraining is this mean we should choose PUTT over POTT? Is there any advantage of POTT over PUTT. Some one told me it is faster but I'm not quite understand because at the fault location we consider z1 and z2 pickup happen at the same time.
@@tossapolpholthip4338 I think so. The only argument I've ever heard for POTT over PUTT that made any sense was if you have a very weak source, and I've forgotten the part that makes sense as I write this.
@@tossapolpholthip4338 There is no difference in speed between POTT and PUTT at the same location with the same relays. The Zone 1 and Zone 2 math is the same inside the relay. All delays are caused by communication between devices, which would be the same regardless of POTT or PUTT.
@@Relaytraining when fault occurs the impedance Z will quickly decrease from load impedance to fault impedance in zone 1 and it should hit zone 2 barrier before it hit zone 1 hence z2 pickup should happen before z1 pickup/trip. I’m not so sure about above statement so I need second opinion. But if the impedance just jump to z1 then z1 and z2 should pickup at the same time.
thank you guys for such intuitive video. It was really helpful!!
Very well explained
Nice video sir 🙏from SAP
Nice video..
Thank you it will surely helps me alot.
Thank you for this amazing explanation!
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
Sir can yu explain about zone protection
That's what this video is about
Thank you, very nice animations that helped me understanding these parts 3 months ago.
Great Explanation... Really interesting and appreciating.