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The nonlinear equivalent input disturbance‐coordinated control for a multi‐machine power system to enhance small signal and transient stability
Author(s) -
Cong Lanmei,
Li Xiaocong,
Chen Mingyuan
Publication year - 2018
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22709
Subject(s) - control theory (sociology) , transient (computer programming) , nonlinear system , electric power system , signal (programming language) , stability (learning theory) , control engineering , power (physics) , transient response , small signal model , mimo , converters , control system , computer science , engineering , control (management) , electronic engineering , physics , quantum mechanics , artificial intelligence , machine learning , programming language , operating system , beamforming , electrical engineering , voltage
A new nonlinear equivalent input disturbance‐coordinated control (NEIDCC) based on the multi‐input multi‐output (MIMO) nonlinear differential algebraic equations (MIMONDAE) is proposed to enhance both small signal and transient stabilities of multi‐machine power systems. In this method, adaptive multi‐objective equations satisfying the Brunovsky normal form are constructed to govern the objective functions converging to their reference trajectories with expected performance criteria. The Γ derivative is defined, which connects nonlinear equivalent inputs and the designed inputs in linear space. When the system is subjected to disturbance, the designed equivalent inputs supply dynamic damping to stabilize the oscillations. As a result, the control systems hold good small signal and transient stabilities. The simulation results of coordinated control for the practical systems, which consist of steam turbine and hydraulic turbine generators connected with Microgrid, demonstrate the effectiveness of the NEIDCC method. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.