NDLI: Load frequency control scheme design considering flexible disturbances

Content Provider	IET Digital Library
Author	Chen, Chunyu Zhang, Kaifeng Ding, Zhetong Dong, Wenjie Li, Xiaoqiang Liang, Rui
Abstract	Good power quality cannot be achieved without the frequency stability of power systems. Nevertheless, with the large-scale integration of highly flexible renewable energy sources (RESs) such as wind and solar energy, frequency stability is threatened by RES-generated disturbances due to their volatility and intermittency especially in the very short time scale. Therefore, a new frequency control scheme should be designed to attenuate these highly time-varying disturbances. In this study, load frequency control (LFC) considering flexible RES suppression is investigated. Inspired by the idea of disturbance estimation and compensation, a novel active disturbance rejection (ADR) scheme is proposed. Unlike previous ADR-based LFC schemes, the proposed one can significantly reduce estimation errors via a novel extended state observer. Then a sliding mode control scheme is used to force the area control error to slide along the equilibrium, thus significantly attenuating the power imbalance. Simulation results show the effectiveness of the proposed schemes.
Starting Page	4142
Ending Page	4149
Page Count	8
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 19, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.1289
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/19
Journal	IET Renewable Power Generation
Publisher Date	2020-12-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Disturbance Rejection Scheme Area Control Error Compensation Control of Electric Power System Control System Analysis Control System Synthesis Disturbance Estimation Flexible Disturbances Flexible RES Suppression Frequency Control Frequency Stability Good Power Quality Highly Flexible Renewable Energy Source Highly Time-varying Disturbances Large-scale Integration Load Frequency Control Scheme Design Load Regulation Multivariable Control System Nonlinear Control System Observers PI Control Power Generation Control Power Imbalance Power System Power System Control Power System Economics Power System Interconnection Power System Managemen Power System Operation Previous ADR-based LFC Scheme Renewable Energy Source RES-generated Disturbances Short Time Scale Sliding Mode Control Scheme Solar Energy Stability in Control Theory Synthesis Method Variable Structure System Volatility
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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