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Typical costs of transmission and distribution protection

Typical costs of transmission and distribution protection

Typical costs of transmission and distribution protection

(OP)
Hi everyone,

Thanks in advance for any help you may be able to offer. I am interested in overall costs of protecting transmission and distribution substations (including relays, wiring, CTS and VTs, comms) and feeders for an academic study that I (I am a University Lecturer), and a PhD student, are undertaking. I am based in the UK, but any answers from anyone, anywhere, are extremely welcome. I realise some information may be sensitive, so please feel free to use ball-park/anonymised figures - I am just trying to get an idea of typical values.

Can anyone give advice on:

  • Relay costs (e.g. differential, distance, overcurrent, busbar) for transmission and distribtution protection applications
  • Typical current/voltage transformer costs at different voltage levels
  • Cost of wiring between CTs/VTs and relays and breakers (for line, transformer, busbar)
  • Costs of protecting a transmission substation in terms of the above (encompassing busbars, feeders, transformers, etc.). Numbers of relays/CTs per feeder/bus etc?
  • Costs of protecting a primary distribution sub in terms of the above (in the uk, this may consist of two 33/11kV transformers, the busbar(s) and the outgoing 11kV circuits)
  • Any business case/cost benefit info relating to IEC 61850-9-2 - savings, installation/commissioning savings, through life costs savings, etc?
  • Thoughts on cost savings offered by non-conventional instrument transformers?
  • Anything else you think relevant smile
Thanks very much in advance.

RE: Typical costs of transmission and distribution protection

(OP)
Thanks very much for the FPelec.

Cheers

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