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Energies 2017, 10(5), 595; doi:10.3390/en10050595

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

Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Akhtar Kalam
Received: 28 February 2017 / Revised: 21 April 2017 / Accepted: 22 April 2017 / Published: 29 April 2017
(This article belongs to the Section Electrical Power and Energy System)

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. View Full-Text
Keywords: load frequency control (LFC); high-gain disturbance observer (HDOB) controller; area control error (ACE) load frequency control (LFC); high-gain disturbance observer (HDOB) controller; area control error (ACE)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rosyiana Fitri, I.; Kim, J.-S.; Song, H. High-Gain Disturbance Observer-Based Robust Load Frequency Control of Power Systems with Multiple Areas. Energies 2017, 10, 595.

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