It seems hat we are missing the status "other" or "others", that we have in different Logical Nodes (like the fault loop FltLoop in the fault locator, RFLO).
Hello friends, a question for IEC 61850 people.
According to the IEC 61850 standard (Ed. 1), the Autorecloser logical node should report in the data object AutoRecSt:
1 if Ready
2 if In progress
3 if successful
Edition 2 of the standard says:
1 if Ready
2 if In progress
3 if successful
4 if...
The new specification IEC 60255 for line distance protection will define SIR. For phase-ground faults you need, to my opinion, to consider also the earth-return impedance, which is function of positive sequence impedance and zero sequence impedance. It is common to assume negative sequence...
In the SCD file (that can be done with Digsi or with another 61850 engineering tool) you should create the input section ("GOOSE" receive) for the IED that has to receive the GOOSE message described in the sender IED.
The software tool of the receiver IED should import the SCD file, read the...
I was there the first time, and NOBODY had the green tie :-)
The SW is Helinks.
I am sorry if I did not participate very much to the forum in the last months. I'll try to catch up again!
Inputs and outputs can be supervised, actually. It depends how much you want to go deep with the supervision.
The problem is if the self-supervision should be supervised, which is possible, but then we enter in MTBF/complexity issues and supervising the self-supervision brings the system to be...
By the way, I call them L1, L2 and L3 or W1, W2 and W3.
But let me know one thing, that I never understood? What is this story that in USA (California) they don't use ABC (positive sequence set) but, it seems to me, a "negative sequence set" (ACB). Is that really true?
Since we are looking for...
Interesting discussion.
Phase "A" does not exist in principle, but it HAS to exist (as lot of you have mentioned) and the utilities have to define it, hopefully without confusion :-)
I had to "rotate" some GIS because of this confusion, not a cheap confusion.
I would like to inform all of you about this course:
http://www.stri.se/metadot/index.pl?id=9332&isa=Category&op=show
I am planning to be there, I hope I will see some of you.... just try to wear a green tie :-) or invent a sign so that we can recognize each others... It will be cool!
By the...
Yes,
the IP address is not part of the GOOSE message. It must be the network analyzer that sends some IP level message to the IED and asks for "who has this MAC address?" and the IED answers. After that, the network analyzer replaces the MAC address of the IED with its IP address.
But I am not...
Hello,
I have a question: does anybody know if the IP address of the IED "sender" is available in the GOOSE data stream?
In 99% of the cases, the network analyzer (Ethereal) does not show the IP address of the IED sender, it only shows the MAC address of its ethernet port. BUT sometimes...
To my opinion and experience, the trip umit is not needed. There are anyway a lot of specifications where it is requested direct connection between relays and Circuit Breaker coils, no aux. relay in between.
Lock-out relay is another issue.
I also do not agree with the fact that you need to...
Hello,
I have replied several days ago on this topic, but it seems something went wrong.
I'll try again.
Integrated disturbance recorders in the protective relays are a must. The fault recorder is the most important information for post-fault analysis. You really can see what "the relay" has...
