Previous in Forum: How to effectively use modern technology to reduce the effort of counting lights   Next in Forum: Negative Sequence Relay Working
Close
Close
Close
15 comments
Participant

Join Date: Nov 2016
Posts: 4

What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/04/2016 2:12 AM

I need some information regarding to the hidden failures in protecting substations. Particularly, summarize the following topics: - Causes of hidden failures (indicate references) - Examples of hidden failures (indicate references) - Conventional count measures (indicate references

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 180
#1

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 2:46 AM

CR4 is not a homework cheat site.

__________________
The reports of my death are greatly exaggerated.
Register to Reply
Participant

Join Date: Nov 2016
Posts: 4
#3
In reply to #1

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 2:53 AM

If you don,t know anything,better keep silent.

Register to Reply Off Topic (Score 9)
3
Guru

Join Date: Oct 2008
Posts: 42293
Good Answers: 1663
#5
In reply to #3

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 6:48 AM

"If you don,t know anything [about traditional relays] ,better keep silent."start studying them!!!

Do some research, independently!

The person you insulted has forgotten far more about relays that you will ever know.

Register to Reply Good Answer (Score 3)
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21001
Good Answers: 781
#2

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 2:48 AM

Various unspecified gremlins.

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
Participant

Join Date: Nov 2016
Posts: 4
#4
In reply to #2

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 2:55 AM

Can you elaborate more?

Register to Reply Score 2 for Off Topic
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 14331
Good Answers: 161
#8
In reply to #4

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 10:51 AM

These:

This is what happens when you feed your relays bad moths after midnight.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9191
Good Answers: 1046
#6

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 7:59 AM
Register to Reply
3
Guru

Join Date: Apr 2008
Location: Chicago
Posts: 3989
Good Answers: 144
#7

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 8:18 AM

I'd relay the message, but my list of contacts has currently eroded.

I hope doesn't put a bad crimp in your progress.

reference? Wire you short a few strands?

__________________
High Tolerance is Beautiful
Register to Reply Good Answer (Score 3)
Guru
Hobbies - DIY Welding - Wannabeabettawelda

Join Date: May 2007
Location: Annapolis, Maryland
Posts: 7363
Good Answers: 427
#9
In reply to #7

Re: what are the problems and failures that would be hidden in a traditional relays?

11/04/2016 1:21 PM

Nicely done and very informative. I do fear however that the self-imposed knowledge blocks will render such gems superfluous.

Register to Reply
Participant

Join Date: Nov 2016
Posts: 4
#10

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/05/2016 2:06 AM

Rude

Register to Reply Off Topic (Score 9)
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 180
#11
In reply to #10

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/05/2016 9:30 AM

I haven’t seen any post by regular members that could be classified as “rude”

Try asking other sites to do you’re homework, you’ll find out just how rude engineers can be.

__________________
The reports of my death are greatly exaggerated.
Register to Reply Off Topic (Score 5)
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 30453
Good Answers: 819
#12
In reply to #10

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/05/2016 2:10 PM

No-one else here has a problem with that.

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Guru

Join Date: Apr 2008
Location: Chicago
Posts: 3989
Good Answers: 144
#13

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/05/2016 8:08 PM

ask a silly question get a silly answer

..ask a good one..

ask a rude one...

engineer a better question and get a better answer

__________________
High Tolerance is Beautiful
Register to Reply
Guru

Join Date: Dec 2010
Posts: 1623
Good Answers: 111
#14

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/06/2016 1:23 PM

Define what you mean by "hidden failure" ....... you might get a better answer.

Real failures are never "hidden" - they are visible burnt & damaged equipment.

Sometimes there is no annunciation or operator observation to explain why the system tripped and no detectable damage....that is a failure to deliver ideal continuous power.

Register to Reply
Associate
Engineering Fields - Power Engineering - New Member

Join Date: Oct 2015
Posts: 33
Good Answers: 2
#15

Re: What are the Problems and Failures That Would Be Hidden in Traditional Relays?

11/27/2016 9:37 PM

I think one hidden failure or problem that you may encounter in traditional relays are the flexibility of these relays when adopting it or employing it in a modern powers system. Since traditional relays has a less functions compare to modern one's also you may want to consider its operating range and coverage in terms of protection zone. Further in terms of space and convenience in installing i think that a lot of traditional relays say 12 relays with a very specific function can be done by a single relay particularly a multifunction microprocessor based relays with lots of embedded function which will save space and time upon installation.

Register to Reply
Register to Reply 15 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
Copy to Clipboard

Users who posted comments:

67model (1); Aliyousuf (3); Brave Sir Robin (1); James Stewart (1); JE in Chicago (2); lyn (1); mrbrightside (1); PWSlack (1); Rixter (1); TonyS (2); Tornado (1)

Previous in Forum: How to effectively use modern technology to reduce the effort of counting lights   Next in Forum: Negative Sequence Relay Working

Advertisement