Conference Paper

Probabilistic Approach to Assess the Performance of Grid-Connected PV Systems

Conference: Int. Conf. on Probabilistic Methods Applied to Power Systems (PMAPS 2002), At Naples, Italy.
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Available from: Giuseppe Marco Tina
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    • "The present paper is developed based on the analytical expression of probability density function of electrical output power generated by a photovoltaic system. In [3],[4],[5] detailed analytical approaches are developed based on the analytical relation between the photovoltaic output power and the irradiation level, and also on the probability density function of clearness index proposed by Holland and Huget [6]. Thus, the probability density function of monthly hourly output power of a photovoltaic system can be expressed as follows: "

    Full-text · Article · Jan 2012
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    • "To calculate the PVS probabilistic model the irradiance on a surface with inclination I  (kW/m 2 ), has been expressed as a function of the hourly clearness index, k th [16] by the following expression: "
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    ABSTRACT: This paper presents an energy performance study based on probabilistic model for the power produced by a PhotoVoltaic System (PVS). Three different PVSs configurations have been studied and compared: flat, one-axis and two axis tracking systems. In particular, the impact of a tracking system on the probability density function (PDF) of the power produced by a PVS has been evaluated through the first fourth moments (mean, variance, skewness and kurtosis) of a PDF. The simulations results have been compared with experimental data related to a 9.6 kWp PV plant installed in ENEA research center located in Portici, Napoli (Italy).
    Full-text · Conference Paper · Jan 2010
    • "This is based on the fact that the solar irradiance significantly depends on the amount of cloud and that the probability distribution of the amount of cloud can be effectively expressed by a Beta distribution [4], but this model refers only to the solar radiation incident on the horizontal surface. In [5], a probability distribution function of solar irradiance on a surface sloped at the generic angle to the horizontal is obtained to evaluate the long term performance of PV systems. This paper deals with the performance evaluation of photovoltaic (PV) sites and grid-connected PV plants. "

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