A variety of factors are causing an increase of slow frequency oscillations in power systems. These oscillations reduce the stability of the system, limit power transfers, and can potentially lead to loss of synchronism and widespread blackouts. These oscillations typically involve variables from distant areas accross the system; therefore, conventional local damping controllers such as power s...

A new "model-free" control methodology is applied to a boost power converter. The properties of the boost converter allow to evaluate the performances of the model-free strategy in the case of switching nonlinear transfer functions, regarding load variations. Our approach, which utilizes "intelligent" PI controllers, does not require any converter model identification while ensuring the stabili...

A scheme suitable for the detection and identification of faults in power systems is presented. Two notable contributions are made: a re-modelling of faulty components of power systems that is applicable to both normal and faulty conditions, and a fault detection scheme for power systems. The faults are modelled as unknown inputs, decoupled from the state and output measurements through coordin...

neural networks are applicable in identification systems from input-output data. in this report, we analyze thehammerstein-wiener models and identify them. thehammerstein-wiener systems are the simplest type of block orientednonlinear systems where the linear dynamic block issandwiched in between two static nonlinear blocks, whichappear in many engineering applications; the aim of nonlinearsyst...

one of the challenges in non-destructive testing schemes using the ultrasound pulse-echo technique is to identify those defects whose sizes are less than or equal to the detection resolution that is dependent on the width of the ultrasound pulse. existing methods also require a reference specimen of the same defective material, which may not be available in some cases. we present a new method f...

With the gradual increases in use of wind power and photovoltaic generation, penetration rate electronics has increased recent years. The inertia characteristics power-electronic-based sources are different from those synchronous generators, making evaluation difficult. In this paper, analyzed. A measurement-based identification method for sources, as well high-power-electronic-penetrated syste...

This paper presents a concept of a tool for verification of model parameters applicable to dynamic elements of the electric power system. The tool uses the PSLF design software, which is in general use by the transmission system operator. The innovation consists in using an additional application (in MS Windows environment) which controls the work of the design software. This results in a tande...

We give a general overview of the state-of-the-art in subspace system identification methods. We have restricted ourselves to the most important ideas and developments since the methods appeared in the late eighties. First, the basis of linear subspace identification are summarized. Different algorithms one finds in literature (Such as N4SID, MOESP, CVA) are discussed and put into a unifyin...