Designing decentralized load-frequency controllers: An optimization approach for synchronous generators in islanded grids

S. Mohsen Azizi, S. Ali Khajehoddin

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this article, an optimal decentralized controller is designed for the load-frequency control (LFC) of a multiarea islanded grid with multiple synchronous generation systems. The decentralized controller includes various proportional-integral (PI) controllers that are simultaneously designed and optimized by using a classical descent-direction quasi-Newton (QN)-based technique. Optimal decentralized PI controllers account for the dynamic coupling amid the areas of the islanded grid with no communication links among them required and, hence, improve the frequency control performance. Simulation results confirm the effectiveness of the proposed decentralized PI control approach. The suggested PI controllers have a similar performance to decentralized eighth-order, linear-quadratic-Gaussian (LQG) integral controllers, which are designed in the decentralized servomechanism framework, whereas the proposed decentralized PI controllers have considerably lower-order structures.

Original languageEnglish (US)
Article number8245791
Pages (from-to)67-74
Number of pages8
JournalIEEE Industry Applications Magazine
Volume24
Issue number2
DOIs
StatePublished - Mar 1 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Designing decentralized load-frequency controllers: An optimization approach for synchronous generators in islanded grids'. Together they form a unique fingerprint.

Cite this