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This paper addresses the problem of dynamic security classification as well as security control of power systems., using class pattern recognition. More specifically, neuro-fuzzy decision trees (N-FDTs) are proposed i.e. fuzzy decision tree structure with neural like parameter adaptation strategy, in order to classify the security status of a power system. The method is applied on a realistic model...
In this paper, an operating strategy is suggested for the participation of variable speed, variable pitch wind generators (VSVPWG) in primary load-frequency regulation through pitch-control. The proposed strategy is mathematically precise and neither direct wind measurement as a control input, nor any linearization of the system are required. The above suggested are independent of the specific type...
During the last decades there has been a continuous growth of wind power generation. This trend, especially in Greek islands, where wind potential is high, raises the issue of acceptable penetration levels of wind generation especially in autonomous systems. This work is part of a research program between PPC S.A. -of Greece and NTUA. The method is applied to two islands, Crete and Rhodes, where wind...
In this paper, a preliminary analysis of the impact of high wind power penetration in the operation of the Greek interconnected power system is presented. The problems studied in the paper are those related to the stability of the power system under the presence of disturbances. The impact of the installation of 3000 MW penetration of wind power in the Greek power system projected to 2012 is investigated...
The interconnection of small, modular generation and storage technologies at the MV and LV distribution level have the potential to significantly impact power system performance. In this paper models of the main micro-generation sources are described. In particular, the models of microturbines, fuel cells, photovoltaic systems and wind turbines, are described. In addition basic models of their power...
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