GAIN-PHASE MARGINS BASED STABILITY ANALYSIS OF TIME DELAYED HYBRID LOAD FREQUENCY CONTROL SYSTEM

EROL H., AYASUN S.

REVUE ROUMAINE DES SCIENCES TECHNIQUES-SERIE ELECTROTECHNIQUE ET ENERGETIQUE, cilt.66, sa.2, ss.119-124, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 66 Sayı: 2
  • Basım Tarihi: 2021
  • Dergi Adı: REVUE ROUMAINE DES SCIENCES TECHNIQUES-SERIE ELECTROTECHNIQUE ET ENERGETIQUE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, zbMATH
  • Sayfa Sayıları: ss.119-124
  • Anahtar Kelimeler: Hybrid power systems, Microgrids, Power system stability, Renewable energy sources, Smart grids, GENERATION/ENERGY STORAGE-SYSTEM, DEPENDENT STABILITY, POWER, OPTIMIZATION, CONSTANT, DESIGN
  • Gazi Üniversitesi Adresli: Evet

Özet

The stability analysis of a hybrid load frequency control (LFC) system with communication delays is presented comprehensively in this paper. Stability analysis, which contains delays, is done by using an exact and a direct analytical method. In the computation of delay margins gain and phase margins are also taken into account. Hybrid LFC schemes installed with proportional-integral (PI) controllers is carried out in case studies. In this method stability and relative stability regions are obtained. Also, the stability boundary curves are obtained as a function of the PI controller parameters. Gain and phase margins can be selected by considering time delay margin suitable with the controller gains for robustness purposes.