This paper discusses analyses of power system instability due to relay failures related to grid faults. Different power systems differ significantly in their response to a disturbance and in their behavior in disturbed conditions. Therefore, the vulnerability of the system also to relay misoperations is highly case-dependent. When stability is the issue, a system breakdown most probably occurs ...

We present a symbolic algebraic electrical system analysis method . A single-phase model is applied to a renewable electrical power plant. Once the system relations established, algorithms are applied, calculating the Groëbner bases for determining the system observability. Parallel programming is used in order to manage the number of relations and to decrease the time computing. A cost sensor ...

Cloud computing is a new computational and commercial model. It brings the illusion of a virtually infinite computing infrastructure/platform that provides advanced features. The increased number of VMs and applications in virtualized data centers triggers serious scalability concerns with regards to monitoring. Many features of Cloud need supports from underlying Cloud monitoring system. There...

In this contribution we provide a simple and useful state estimation approach for a general class of non linear models that describe dynamic power systems. At first we show, through a small power network, that this class of systems is modeled by non linear differential-algebraic equations that we may always transform to a system of ordinary differential equations. After, we investigate a state ...

A new paradigm for simulating large-scale dynamical systems is described and applied to an integrated naval power system. This approach enables the overall system simulation to be formed as an interconnection of interdependent dynamic simulations, each representing a specific electrical, mechanical, hydraulic, and/or thermal component/subsystem. Each simulation may be developed independently us...

RankGene is a program for analyzing gene expression data and computing diagnostic genes based on their predictive power in distinguishing between different types of samples. The program integrates into one system a variety of popular ranking criteria, ranging from the traditional t-statistic to one-dimensional support vector machines. This flexibility makes RankGene a useful tool in gene expres...