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A new dynamic electrical load model for an HVAC chiller for use in demand response applications is presented. The coupling of a building's electrical and thermal characteristics is not adequately captured using existing static models. Therefore a dynamic model is proposed. This allows for more accurate planning of the dispatching of load for demand side response. The model in this paper is derived...
This paper considers the synchronization and transient stability analysis in a simple model of a structure-preserving power system. We derive sufficient conditions relating synchronization in a power network directly to the underlying network state, parameters, and topology. In particular, we provide a spectral condition based on the algebraic connectivity of the network and a second condition based...
Secure system state estimation is an important issue in smart grid to assure the reliability and security. In this paper, the case of a single observation station and Gaussian noise communication channel with an eavesdropper is considered. The channel capacity requirement is studied from the information theoretic perspective. The smart grid is modeled as a linear dynamic system. Then, the channel...
This paper presents a framework for cyber attack impact analysis of a smart grid. We focus on the model synthesis stage in which both cyber and physical grid entity relationships are modeled as directed graphs. Each node of the graph has associated state information that is governed by dynamical system equations that model the physics of the interaction (for electrical grid components) or functionality...
In this paper, we propose a distributed agent based supervisory scheme to make Zone 3 relays robust to hidden failure induced tripping, facilitated by the communication network -- soon to become an integral parts of the smart grid. Possible elimination of Zone 3 relays (remote backup protection) has been studied in the recent past and these remote backup relays have been adjudged to be essential for...
We consider load-side participation in electricity markets construed broadly to include energy as well as reserve transactions. Extending work in optimal plug-in-hybrid electric vehicle (PHEV) charging, we develop a decision support tool for load-side participation in energy markets, recognizing that it must be responsive to local distribution network dynamic congestion and marginal line loses. We...
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