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Mixed time-frame simulation

Mixed time-frame simulation

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This chapter discusses the principles of mixed time-frame simulation with reference to a power system with LCC-based HVDC transmission system as part of it. This approach has been extended and used for other cases, such as to multi-terminal VSCbased HVDC. The smart grid initiative involves intertwining the electrical power network with sensors and communication infrastructure so as to control the system in a smarter way. The increasing interdependency of the electrical power system on signals and communication infrastructure greatly complicates the dynamic response and increases the need for co-simulation techniques. Moreover, the need to test equipment prior putting in service requires applying real-time simulation techniques to co-simulation.

Chapter Contents:

  • 12.1 Introduction
  • 12.1 Introduction
  • 12.2 Description of the hybrid algorithm
  • 12.2 Description of the hybrid algorithm
  • 12.2.1 Individual program modifications
  • 12.2.1 Individual program modifications
  • 12.2.2 Data flow
  • 12.2.2 Data flow
  • 12.3 TS/EMTDC interface
  • 12.3 TS/EMTDC interface
  • 12.3.1 Equivalent impedances
  • 12.3.1 Equivalent impedances
  • 12.3.2 Equivalent sources
  • 12.3.2 Equivalent sources
  • 12.3.3 Phase and sequence data conversions
  • 12.3.3 Phase and sequence data conversions
  • 12.3.4 Interface variables derivation
  • 12.3.4 Interface variables derivation
  • 12.4 EMTDC to TS data transfer
  • 12.4 EMTDC to TS data transfer
  • 12.4.1 Data extraction from converter waveforms
  • 12.4.1 Data extraction from converter waveforms
  • 12.5 Interaction protocol
  • 12.5 Interaction protocol
  • 12.6 Interface location
  • 12.6 Interface location
  • 12.7 Test system and results
  • 12.7 Test system and results
  • 12.8 Discussion
  • 12.8 Discussion
  • References
  • References

Inspec keywords: voltage-source convertors; power system transients; smart power grids; dynamic response; power system simulation; HVDC power transmission; power system control

Other keywords: mixed time-frame simulation; multiterminal VSC-based HVDC; co-simulation techniques; power systems electromagnetic transients simulation; real-time simulation techniques; smart grid; sensors; communication infrastructure; electrical power network; equipment test; power system control; LCC-based HVDC transmission system; dynamic response

Subjects: Control of electric power systems; Power engineering computing; Power system control; d.c. transmission; Power convertors and power supplies to apparatus

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