Visualization of dynamic simulation data for power system stability assessment

Chong Suk Song, Gilsoo Jang, Chang Hyun Park

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Power system analyses, which involve the handling of massive data volumes, necessitate the use of effective visualization methods to facilitate analysis and assist the user in obtaining a clear understanding of the present state of the system. This paper introduces an interface that compensates for the limitations of the visualization modules of dynamic security assessment tools, such as PSS/e and TSAT, for power system variables including generator rotor angle and frequency. The compensation is made possible through the automatic provision of dynamic simulation data in visualized and tabular form for better data intuition, thereby considerably reducing the redundant manual operation and time required for data analysis. The interface also determines whether the generators are stable through a generator instability algorithm that scans simulation data and checks for an increase in swing or divergence. The proposed visualization methods are applied to the dynamic simulation results for contingencies in the Korean Electric Power Corporation system, and have been tested by power system researchers to verify the effectiveness of the data visualization interface.

Original languageEnglish
Pages (from-to)484-492
Number of pages9
JournalJournal of Electrical Engineering and Technology
Issue number4
Publication statusPublished - 2011 Jul


  • Dynamic security assessment
  • Geographic data views
  • Power system visualizations
  • Rotor angle stability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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