An analysis of wind and solar power variability to assess its implications for power grid

Abstract

The paper discusses the problem of parallel operation of wind and solar power plants with the power system associated with the influence of power fluctuations on the power quality and stability. A brief assessment of the prospects for the commissioning of the wind and solar power plants in Russia and a description of the associated negative impacts on the power system is given. A methodology for assessing the possible energy production of wind and solar power plants using raw data from weather stations is presented. Based on the methodology, an assessment of some regions of Russia in relation to the variability of wind speed and cloudiness is made. The wind power duration curves are given. An analysis of possible deviations of solar power under the influence of cloudiness is carried out. The effect of geographical aggregation of wind or solar power output to increase the guaranteed power generation and reduce the negative impact on the stability of the energy system is shown.

Obnovljiva energija i sportska takmičenja

“…Energija vetra i solarna energija često imaju uticaj na životnu sredinu, jer obe tehnologije zahtevaju veliku upotrebu i iskorišćavanje zemljišta. Zbog svoje male gustine energije solarni paneli i vetar koriste proporcionalno više zemljišta za proizvodnju iste količine energije nego fosilna goriva (Lakatos et al, 2011;Shakirov, 2019). Prema podacima istraživača za energetiku pri Fondaciji za odbranu demokratije iz Vašingtona i Američke pomorske škole iz Montereja u Kaliforniji (SAD) tehnologije obnovljive enrgije jesu i dalje rešenje za smanjenje efekata staklene bašte, ali se ne vodi dovoljno računa o tome koliki su životni ciklusi ovih tehnologija, koliko energije je potrebno da se one proizvedu, transportuju, instaliraju, održavaju i odlažu (Shaffer, 2021).…”

Modelling of diesel generator operating modes on the basis of the engine speed characteristic in autonomous photovoltaic systems

“…For example, the amount of solar radiation changes considerably depending on the season, month, day and time of the period under examination. Furthermore, consideration should be taken of a number of annual patterns reducing the solar radiation level due to high cloud cover during certain periods of the year [5,6].…”