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An Innovative Probabilistic Methodology for Net Transfer Capacity Evaluation

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pubblicazioni - Memoria

An Innovative Probabilistic Methodology for Net Transfer Capacity Evaluation

Il lavoro qui illustrato è volto a inquadrare il problema della valutazione della Net Transfer Capacity (NTC) tra le aree di rete considerando l’impatto delle incertezze di previsione di cui sopra. Questo lavoro propone una metodologia probabilistica per valutare la NTC, che adotta una tecnica di loadflow basata sul Point Estimate Method (PEM), combinata con la trasformazione normale con polinomio di terzo ordine (TPNT).

In the context of electric transmission system planning research proposes methods for the assessment of the effect of uncertainties (due to forecasting errors of intermittent generation and loads) on power system operating condition. 

In particular probabilistic power flow methods are illustrated to calculate the probability distributions of the voltages and the branch currents, starting from the distributions of power injections/absorptions.

These uncertainties play a key role in the operational planning of power systems, as certain configurations of load and intermittent generation can cause security problems. The work here illustrated is intended to frame the problem of assessing the Net Transfer Capacity (NTC) among network areas accounting for the impact of the above mentioned forecast uncertainties.

This paper aims to propose a probabilistic methodology to assess NTC, which adopts a power flow technique based on Point Estimate Method (PEM) combined with Third Order Polynomial Normal (TPNT) Transformation. This approach is compared with a conventional NTC assessment technique and has been validated against Monte-Carlo benchmark on an IEEE test system.

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