نویسندگان
دانشکده فیزیک، دانشگاه صنعتی شریف، تهران
چکیده
بررسی سریهای زمانی از انرژی الکتریکی تولید شده توسط توربینهای بادی و سلولهای خورشیدی نشان میدهد، که انرژی تولید شده با توجه به شرایط جغرافیایی افت و خیزهای زیادی به همراه خود دارد. این افت و خیزهای موجود باعث شده است که نه تنها سهم دریافتی از این منابع اندک باشد بلکه موجب ناپایداری نیروگاههای برقی شده است. با بررسی چندین داده مختلف از کشورها و نواحی متفاوت با بسامد ثانیه و دقیقه نشان میدهیم که رفتارهای مقیاسی متفاوتی در بازههای مختلف زمانی وجود دارد و دیگر خصوصیات تصادفی و غیرخطی آنها را آشکار میسازیم. همچنین به مقایسه رفتارهای غیرگوسی این مناطق با هم میپردازیم و نشان میدهیم که بررسی خواص بس برخالی این دادهها به ما کمک میکند تا میزان ناپایداری این انرژیهای دریافتی را بهتر بسنجیم.
کلیدواژهها
عنوان مقاله [English]
Investigating the fluctuations of solar and wind energy
نویسندگان [English]
- M R Rahimi Tabar
- A Madanchi
- M R Absalan
- M Anvari
چکیده [English]
A time series study of the electrical energy generated by wind turbines and solar cells shows that the energy produced has a lot of fluctuations due to the geographic conditions. These ups and downs have caused not only the share of these sources to be marginal, but also they lead to the volatility of electric power plants. By examining several different data from different countries and regions with the frequency of second and minute, we show that different scale behaviors exist at different time intervals and reveal their other random and nonlinear characteristics. We also compare the non-Gaussian behavior of these regions together, showing that studying the properties of such data helps us to better measure the incidence of these energies
کلیدواژهها [English]
- stochastic processes
- complex systems
- solar irradiane
- wind power
- probability density function
- MFDFA
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