Intertrip/Interlocking between IED which using different communication protocol
Intertrip/Interlocking between IED which using different communication protocol
(OP)
Dear Experts,
As per the subject, if an upstream IED using Modbus and downstream IED using IEC61850 communication, how to implement the intertrip/interlock function between them?
The upstream and downstream equipment are located very far from each other where hardwire connection is not possible and fiber optic is the only solution.
As per the subject, if an upstream IED using Modbus and downstream IED using IEC61850 communication, how to implement the intertrip/interlock function between them?
The upstream and downstream equipment are located very far from each other where hardwire connection is not possible and fiber optic is the only solution.






RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
Depends on what you mean by "very far". You would need dark fiber available to use the SEL-2505, but with single-mode, it has a range of 80 km.
RE: Intertrip/Interlocking between IED which using different communication protocol
If you proivde details on the two IED's you are using we might be able to proivde a better answer.
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
Using a converter sounds like the feasible solution. The fiber optic cable need to go through a FO patch panel if I'm not mistaken. I need to use two/four core for the intertrip/interlocking?
RE: Intertrip/Interlocking between IED which using different communication protocol
Regards
Marmite
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
Regards
Marmite
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
you can use only dedicated devices, Im strongly not recommended use any media converters.
interlocks is additional signal, same FO
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
1. Downstream IED must be compatible with IEC61850 as per project specification.
2. Upstream (separate power provider)IED not necessary to follow IEC61850 and they can use whatever communication protocol.
3. Intertrip/Interlock between the IED must be thru fiber due to the long distance.
4. Upstream IED not confirm having fiber optic connection port. Downstream IED fiber optic connection will be used to connect to electrical control system. Most probably there won't be additional fo ports available.
SEL device help to convert the fiber optic signal. But it didn't solve the communication protocol issue.
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
Or I can use the protocol converter as jghrist stated. But when you said 'would not be fast enough to meet your requirements for IEC61850' are you referring to the GOOSE messaging?
RE: Intertrip/Interlocking between IED which using different communication protocol
Using two SEL-2505's would be the simplest and probably most economic solution if the Mirrored Bits communications would be acceptable.
RE: Intertrip/Interlocking between IED which using different communication protocol
RE: Intertrip/Interlocking between IED which using different communication protocol
Thanks you for your supportive answers. I have few options now and will choose the most economical solution when finalize the design.