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Load frequency control scheme for a microgrid system with the application of hTLO-DE algorithm

Indrajit Koley orcid id ; Department of Electrical Engineering, Siliguri Institute of Technology, Siliguri 734009, India
Asim Datta ; Department of Electrical Engineering, Tezpur University, Tezpur, Assam 784028, India
Goutam Kumar Panda ; Department of Electrical Engineering, Jalpaiguri Government Engineering College, Jalpaiguri 735102, India

Puni tekst: engleski pdf 748 Kb

str. 133-146

preuzimanja: 160



Load frequency control (LFC) is a crucial feature of electric power systems to maintain a balance between power supply and load demand, thus avoiding a deviation of the grid frequency. The present work aims to implement an effective LFC scheme for a microgrid system consisting of a diesel generator (DEG), a wind turbine generator (WTG) and a battery storage system. Proportional-integral-double-derivative (PIDD) controllers are used to implement the proposed LFC scheme. The controller parameters are computed using an innovative hybrid teaching-learning-optimization differential-evaluation (hTLO-DE) algorithm. The main scope of the work lies in application of hTLO-DE optimized PIDD controllers in DEG-WTG-battery storage based MG system. The results obtained with PIDD controllers are compared with those obtained with the traditional PI and PID controllers. A critical analysis shows that the PIDD controller can provide better dynamic responses in terms of settling time and magnitude of oscillations compared to PI and PID controllers. The frequency responses of the system are studied under different scenarios of generation and load variations, which establishes the robustness of the proposed PIDD-based LFC scheme.

Ključne riječi

load frequency control (LFC); diesel/wind/battery; microgrid system; hTLO-DE algorithm; PIDD controller

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