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PS2-Q8 : Migration

PS2-Q8 : Migration. This question refers to migration scenarios or procedures. Migration is very individual depending both on starting point and end point, which have to be clearly specified: Starting point : Hardwired or serial (proprietary) or mix

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PS2-Q8 : Migration

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  1. PS2-Q8 : Migration • This question refers to migration scenarios or procedures. Migration is very individual depending both on starting point and end point, which have to be clearly specified: • Starting point: Hardwired or serial (proprietary) or mix • End point: Completely IEC 61850 or retaining some of the existing non-IEC 61850 compatible equipment • Nevertheless, the migration procedure with all boundary conditions has to be clarified

  2. PS2-Q8 : Migration • Mixing parallel wired parts and parts with serial communication according to IEC 61850 needs a solution, mainly on station level being able to handle both. This requirement is typical for a stepwise retrofit over month or years. It is very convenient to keep interbay functions like interlocking hardwired at least for this period. • If some parallel wired parts should retained, a proxy server is needed representing the legacy data according the object model of IEC 61850 and communicating these according the rules of IEC 61850. • Future migration will be easy when it is based on an already existing system conformant with IEC 61850 and formally described by SCL.

  3. Existing Third Party Station Level IEC 60870-5-101 Protocoll Converter Time receiver Time server (SNTP) IEC 61850 Existing Installation before Retrofit Bay Control Protection Main 1 100 Mbit/s Ethernet Ring Bus with Switches Protection Main 2 Migration of 7 Feeders in total 380kV Feeder after Retrofit PS2-Q8 : Migration Example: Stepwise retrofit of the 380 kV Substation Laufenburg (Switzerland)

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