Analysis of stability of PV system using the eigenvalue according to the frequency variation and requirements of frequency protection

Research output: Contribution to journalArticlepeer-review

Abstract

Use of photovoltaic (PV) power generation system will become more widespread in the future due to anticipated cost reduction in PV technology. As the capacity of PV systems increases, a variation of power system frequency may prevent the stable output of PV system. However, the standard for the frequency protection of distributed generation in Korea Electric Power Corporation (KEPCO)'s rule does not include the setting of frequency protection. Therefore, this paper analyzes the correlation between the frequency protection requirements and the stability of grid-connected PV system for the adjustable operating setting of frequency protection. The distribution system interconnected with 3 MW PV system is modeled by Matlab/Simulink. The various values of frequency are simulated. For studied cases, the stability of PV system is analyzed. It is concluded that the setting of frequency protection is necessary to consider the stability of PV system.

Original languageEnglish
Pages (from-to)480-485
Number of pages6
JournalJournal of Electrical Engineering and Technology
Volume7
Issue number4
DOIs
StatePublished - Jul 2012

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Eigenvalue
  • Frequency protection
  • Matlab/simulink
  • Photovoltaic system
  • Stability

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