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The Prony analysis has been considered as a standard method for estimating oscillation modes using ringdown responses in a power grid. Extensive studies have been done to find its optimal performance conditions, but the comparisons between the Prony analysis and other modal analysis approaches from a user perspective are insufficient. This paper compares the performance of two modal analysis methods,...
Demand side management (DSM) is an essential function to schedule and optimize the energy consumption in smart grids. One of the challenges of DSM is how to take the complex human behavior into consideration. In this paper, we apply a special population dynamic model to investigate the performance of DSM algorithms under human behavior effects. Specifically, we adapt the SISa (susceptible-infected-susceptible...
This paper proposes a method for determining electromechanical mode estimate accuracy by relating mode estimate error to residual values. Mode frequency and damping ratio were estimated using Prony analysis and residuals were calculated for a 17-machine model with varying levels of load noise. Mode estimate error and residuals were found to increase proportionally to each other as noise values were...
Science and technology (S&T) is the driving force for economic development. It is significant to study the efficiency of the input-output of S&T. This paper studies the S&T input-output efficiency from 2006 to 2008 of Chinese 30 regional large and medium- sized industrial enterprises by way of DEA model. The results indicate that the efficiency is low in all and there is no improvement...
Web service technologies are becoming increasingly popular for integrating systems and services. Service-oriented architecture (SOA) will provide flexible business flows for application system. This paper describes a service-oriented framework of interface prototype driven development (IPDD), and the formal description is presented, where four sub-processes are discussed respectively. An instance...
Web Service technologies are becoming increasingly popular for integrating systems and services. Web service composition as an important value-added function provides an application foundation for reusing Web services and automating composition. After brief analysis on the service composition concept and the eliciting process of functional requirements, a strategy of Web service composition based...
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