NDLI: Robust H∞ load-frequency control in interconnected power systems

Content Provider	IET Digital Library
Author	Chuang, Ning
Abstract	This study describes a robust load-frequency control (LFC) scheme in a two-area interconnected power system with uncertain disturbances. A sector-bounded H ∞ control approach is used for compensating of the non-linearities based on a minimum order dynamic LFC model to avoid the complexity of a high-order model. The simulation in time domain from the use of the proposed controller has been compared with the use of a conventional proportional–integral (PI) type controller affected by the same load change. The simulated results have proved the significant improvement over the PI controller and have verified the effectiveness of the proposed robust H ∞ controller which can minimise the frequency deviations significantly. This approach treats the tie-line power exchanges in the presences of external disturbance, parameter uncertainties and accidental crashing of generating units as the structural or model uncertainties discussed in this study. Simulation results also show that the proposed H ∞ controller guarantees robust performance and fast response under a wide range of operating conditions and system uncertainties.
Starting Page	67
Ending Page	75
Page Count	9
ISSN	17518644
Volume Number	10
e-ISSN	17518652
Issue Number	Issue 1, Jan (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/10/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2015.0412
Journal	IET Control Theory & Applications
Publisher Date	2016-01-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Accidental Crashing Compensation Control Nonlinearities Control of Electric Power System External Disturbance Frequency Control Frequency Deviation Minimisation High-order Model H∞ Control Load Regulation Minimum Order Dynamic LFC Model Model Uncertainties Nonlinear Control System Nonlinearity Compensation Operating Condition Optimal Control Parameter Uncertainties Power System Control Power System Economics Power System Interconnection Power System Managemen Power System Operation Robust Control Robust H∞ Load-frequency Control Sector-bounded H∞ Control Approach Stability in Control Theory Structural Uncertainties System Uncertainties Tie-line Power Exchange Time Domain Two-area Interconnected Power System Uncertain Disturbances Uncertain System
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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