Power System Stabilization Using Energy-Dissipating Hybrid Control

A new energy-dissipating hybrid control framework is proposed in this paper. The proposed framework incorporates a plant with continuous dynamics connected in parallel with a hybrid controller that combines logical switches with continuous dynamics. The overall closed-loop system can be described as...

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Bibliographic Details
Published in:IEEE transactions on power systems 2019-01, Vol.34 (1), p.215-224
Main Authors: Zhang, Zhe, Qiao, Wei, Hui, Qing
Format: Article
Language:English
Subjects:
Closed loop systems
Computer simulation
Control stability
Energy dissipation
Excitation
excitation control
Generators
Hamiltonian functions
Hybrid control
Hybrid power systems
Hybrid systems
Nonlinear control
Parallel connected
port-controlled Hamiltonian system (PCHS)
Power system dynamics
Power system stability
Power system transients
Stability analysis
Switches
synchronous generator
Synchronous generators
Transient stability
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Summary:A new energy-dissipating hybrid control framework is proposed in this paper. The proposed framework incorporates a plant with continuous dynamics connected in parallel with a hybrid controller that combines logical switches with continuous dynamics. The overall closed-loop system can be described as a hybrid impulsive dynamical system in which the redundant energy preserved in the plant can be damped quickly and continuously due to the enhanced dissipativity of the closed-loop system. The proposed framework is applied to design decentralized nonlinear excitation controllers for synchronous generators in a multimachine system to improve its transient stability, in which the synchronous generators are modeled as port-controlled Hamiltonian systems. Simulation studies on the IEEE 10-generator, 39-bus New England power system are carried out to verify the effectiveness of the proposed energy-dissipating hybrid excitation control to improve the transient stability and dissipativity of the interconnected power system under various fault conditions.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2018.2866839