NDLI: Robust, coordinated control of SSO in wind-integrated power system

Content Provider	IET Digital Library
Author	Wang, Tong Yang, Jing Padhee, Malhar Bi, Jingtian Pal, Anamitra Wang, Zengping
Abstract	This study presents a robust, coordinated control methodology for damping sub-synchronous oscillations (SSOs) while considering power output variations from multiple wind farms. The proposed damping control strategy utilises the mixed H 2/H ∞ control with regional pole placement to suppress the oscillations. For ensuring applicability over a wider operating range, the convex polytopic theory is utilised by using different operating points as the vertices of a convex polytope. The centralised, coordinated controller for damping SSOs is designed using linear matrix inequalities. Furthermore, unmeasurable state variables, if present, are represented by corresponding output variables. The damping signal is implemented as active power and reactive power modulation of the rotor-side converter of the doubly fed induction generators. A 4-machine, 2-area system and a 39-machine New England system are used to demonstrate the performance of the proposed control. The simulation results show that the polytopic controller can not only provide requisite damping to the SSO modes of interest, but also has good control performance when the wind power outputs change over a wide range.
Starting Page	1031
Ending Page	1043
Page Count	13
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 6, Apr (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.0410
Journal	IET Renewable Power Generation
Publisher Date	2020-01-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Algebra Asynchronous Generator Asynchronous Machine Centralised Control Centralised Controller Control Control of Electric Power System Control System Analysis Control System Synthesis Convex Polytopic Theory Coordinated Controller Damping Damping Control Strategy Damping Signal Doubly Fed Induction Generators H∞ Control Linear Matrix Inequalities Mixed H2-H∞ Control Multiple Wind Farms Optimal Control Oscillation Power Converter Power Generation Control Power Supplies to Apparatus Power System Control Power System Stability Reactive Power Modulation Regional Pole Placement Robust Control Robust Control Methodology Rotor-side Converter Rotors SSOs Stability in Control Theory Sub-synchronous Oscillations Synthesis Method Wind Power Plant Wind-integrated Power System
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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