STATISTICS OF SOLAR IRRADIANCE TIME SERIES FOR KYIV. I. FREQUENCY AND CORRELATION ANALYSES FOR PHOTOVOLTAIC SYSTEM APPLICATIONS

• Date: 2026
• Main Authors: Gaevskii , O., Gaevska , H.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2026
• Subjects: solar radiation; clearness index; stochastic residuals; time series; Kyiv; stationarity; frequency distribution; KDE approximation; bimodality; ACF/PACF; ARMA models; photovoltaic systems; energy reliability.
• Online Access: https://ve.org.ua/index.php/journal/article/view/625
• Journal Title: Vidnovluvana energetika

Modern photovoltaic (PV) systems demand precise design and power generation forecasting, making the investigation of regional statistical properties of solar radiation increasingly critical. This paper presents a statistical analysis of daily solar irradiation series for Kyiv over the past 10 years,...