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The aim of this paper is to improve an optimization algorithm for coordinated management of VSC-HVDC link and DFIGs in variable frequency operation, presented by the authors in a previous work. The new features introduced in this paper concern different upper bounds on DFIG rotor and stator power flow and modified constraints on generator slips and AC offshore grid frequency. The upper bound on stator...
This paper presents a Probabilistic Load Flow (PLF) procedure that allows the impact of distributed generation (DG) on the transmission system to be assessed. By means of the Monte Carlo technique, several system states are simulated, varying the power injection of DG. The load flow solution is performed by the Newton-Raphson method and a distributed slack bus formulation is adopted, in order to distribute...
The aim of this paper is to find out an optimization algorithm for wind power plants, where the wind turbines are equipped by DFIG, connected to on-shore grid by means VSC-HVDC link. The off-shore grid frequency is assumed variable under a fixed range and the wind power tracking characteristic of the DFIG has to be extended to consider the additional grid frequency dependence. The highly non linear...
This paper analyzes the impact of a large amount of wind generation on the Italian transmission network. The analysis takes into account the fact that the most suitable sites for installation of wind farms are located mainly in Southern Italy and that the power flows from wind turbines will arise in addition to the existing ones, mainly directed to Central Italy, thus increasing the possibility of...
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