Note: This content is accessible to all versions of every browser. However, this browser does not seem to support current Web standards, preventing the display of our site's design details.

  

Sparsity-Promoting Optimal Wide-Area Control of Power Networks

Author(s):

F. Dörfler, M.R. Jovanovic, M. Chertkov, F. Bullo
Conference/Journal:

Abstract:

Inter-area oscillations in bulk power systems are typically poorly controllable by means of local decentralized control. Recent research efforts have been aimed at developing widearea control strategies that involve communication of remote signals. In conventional wide-area control, the control structure is fixed a priori typically based on modal criteria. In contrast, here we employ the recently-introduced paradigm of sparsitypromoting optimal control to simultaneously identify the optimal control structure and optimize the closed-loop performance. To induce a sparse control architecture, we regularize the standard quadratic performance index with an `1-penalty on the feedback matrix. The quadratic objective functions are inspired by the classic slow coherency theory and are aimed at imitating homogeneous networks without inter-area oscillations. We use the New England power grid model to demonstrate that the proposed combination of the sparsity-promoting control design with the slow coherency objectives performs almost as well as the optimal centralized control while only making use of a single wide-area communication link. In addition to this nominal performance, we also demonstrate that our control strategy yields favorable robustness margins and that it can be used to identify a sparse control architecture for control design via alternative means.

Year:

2013
Type of Publication:

(15)Miscellaneous
Supervisor:



File Download:

Request a copy of this publication.
(Uses JavaScript)
% Autogenerated BibTeX entry
@Misc { D_rEtal:2013:IFA_4942,
    author={F. D{\"o}rfler and M.R. Jovanovic and M. Chertkov and F. Bullo},
    title={{Sparsity-Promoting Optimal Wide-Area Control of Power
	  Networks}},
    month=jul,
    year={2013},
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=4942}
}
Permanent link