High-Gain Disturbance Observer-Based Robust Load Frequency Control of Power Systems with Multiple Areas

Ismi Rosyiana Fitri, Jung-Su Kim and Hwachang Song
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Ismi Rosyiana Fitri: Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea
Jung-Su Kim: Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea
Hwachang Song: Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea

Energies, 2017, vol. 10, issue 5, 1-21

Abstract: This paper proposes a high-gain disturbance observer (HDOB)-based controller for load frequency control (LFC) of power systems with multiple areas. The main goal of LFC problem is to maintain the frequency to its nominal value. The objective of this paper is to reject frequency variations due to abrupt load changes and diverse uncertainties (e.g., inertia and damping parameters, and interconnection topology, etc.) by employing the HDOB for the LFC. The simulation results demonstrate the effectiveness of the proposed HDOB-based LFC by showing that it successfully rejects frequency variations owing to load changes and frequency variations occurring in various locations in interconnected power systems. Besides, it is shown that the proposed LFC can eliminate frequency deviations although there are delays in transmission among the power systems with multiple areas.

Keywords: load frequency control (LFC); high-gain disturbance observer (HDOB) controller; area control error (ACE) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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