ADRC for Decentralized Load Frequency Control with Renewable Energy Generation

Sergio A. Dorado-Rojas, John Cortés-Romero, Sergio Rivera, and Eduardo Mojica-Nava

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@inproceedings{dorado-rojas2019,
  title = {{{ADRC}} for {{Decentralized Load Frequency Control}} with {{Renewable Energy Generation}}},
  booktitle = {2019 {{IEEE Milan PowerTech}}},
  author = {{Dorado-Rojas}, Sergio A. and {Cort{\'e}s-Romero}, John and Rivera, Sergio and {Mojica-Nava}, Eduardo},
  year = 2019,
  month = jun,
  doi = {10.1109/PTC.2019.8810873},
}

Abstract

This document presents an application of Active Disturbance Rejection Control (ADRC) in a secondary frequency regulation problem with an active participation of renewable photovoltaic and wind generators. This problem is known as Load Frequency Control (LFC). The ADRC technique uses a reduced set of information of the model by grouping the effects of non-modeled dynamics, exogenous disturbances, and parameter uncertainties into a generalized equivalent disturbance, which in this case is estimated by an Extended-State Observer. This makes it possible to design a decentralized controller that achieves the bifold control objective of a secondary LFC strategy in each area. The proposed controller is able to regulate the frequency of each area and the tie-line power exchanges in presence of several load disturbances. The simulation scenarios validate the control proposal and show the flexibility and advantages of the application of ADRC-based control techniques as decentralized solutions to an LFC problem.

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