Enhancement of transient stability limit and voltage regulation with dynamic loads using robust excitation control
Data(s) |
01/01/2013
|
---|---|
Resumo |
In stressed power systems with large induction machine component, there exist undamped electromechanical modes and unstable montonic voltage modes. This article proposes a sequential design of an excitation controller and a power system stabiliser (PSS) to stabilise the system. The operating region, with induction machines in stressed power systems, is often not captured using a linearisation around an operating point, and to alleviate this situation a robust controller is designed which guaruntees stable operation in a large region of operation. A minimax linear quadratic Gaussian design is used for the design of the supplementary control to automatic voltage regulators, and a classical PSS structure is used to damp electromechanical oscillations. The novelty of this work is in proposing a method to capture the unmodelled nonlinear dynamics as uncertainty in the design of the robust controller. Tight bounds on the uncertainty are obtained using this method which enables high-performance controllers. An IEEE benchmark test system has been used to demonstrate the performance of the designed controller |
Identificador | |
Idioma(s) |
eng |
Publicador |
De Gruyter |
Relação |
http://dro.deakin.edu.au/eserv/DU:30064456/roy-enhancementtransient-2013.pdf http://dx.doi.org/10.1515/ijeeps-2013-0037 |
Direitos |
2013, De Gruyter |
Palavras-Chave | #voltage regulation #transient stability #robust control #uncertainty #nonlinearity |
Tipo |
Journal Article |