Advanced EMT and phasor-domain hybrid simulation with simulation mode switching capability for transmission and distribution systems

Qiuhua Huang, Vijay Vittal

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Conventional electromagnetic transient (EMT) and phasor-domain hybrid simulation approaches presently exist for transmission system level studies. Their simulation efficiency is generally constrained by the EMT simulation. With an increasing number of distributed energy resources and nonconventional loads being installed in distribution systems, it is imperative to extend the hybrid simulation application to include distribution systems and integrated transmission and distribution systems. Meanwhile, it is equally important to improve the simulation efficiency as the modeling scope and complexity of the detailed system in the EMT simulation increases. To meet both requirements, this paper introduces an advanced EMT and phasor-domain hybrid simulation approach. This approach has two main features: First, a comprehensive phasor-domain modeling and simulation framework which supports positive-sequence, three-sequence, three-phase, and mixed three-sequence/three-phase representations and second, a robust and flexible simulation mode switching scheme. The developed scheme enables simulation switching from hybrid simulation mode back to pure phasor-domain dynamic simulation mode to achieve significantly improved simulation efficiency. The proposed method has been tested on integrated transmission and distribution systems. The results show that with the developed simulation switching feature, the total computational time is significantly reduced compared to running the hybrid simulation for the whole simulation period while maintaining good simulation accuracy.

Original languageEnglish (US)
Article number8356599
Pages (from-to)6298-6308
Number of pages11
JournalIEEE Transactions on Power Systems
Volume33
Issue number6
DOIs
StatePublished - Nov 2018

Keywords

  • EMT and phasor-domain hybrid simulation
  • multi-area Thévenin equivalent
  • simulation mode switching

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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