What are the characteristics of wind power and photovoltaic new energy power generation

Do wind power and photovoltaic output have a time correlation?

Firstly, based on a one-dimensional Markov chain model and a static mixed Copula function, wind power and photovoltaic output models were established, effectively characterizing the time correlation of each series of wind and solar output.

What is a positive correlation between solar power and wind power?

When the wind and solar output exhibits a positive correlation characteristic, that is, the wind power output increases and the photovoltaic output also increases at the same time.

Are wind power and photovoltaic output stochastic?

Firstly, wind power and photovoltaic output are regarded as a stochastic process, and the time autocorrelation models of wind power and photovoltaic output are constructed based on a one-dimensional Markov chain and hybrid Copula function.

Is there a spatial correlation between wind and photovoltaic power output?

The data simulated through this model can effectively reflect the spatial correlation between wind and photovoltaic power output and the dynamic changes in this correlation. A dynamic spatiotemporal correlation model for wind and photovoltaic power output was established by coupling the two sub-models mentioned above.

Is the correlation between wind and solar power output a dynamic change?

By analysing the output curve in the above figure, it can be seen that the correlation between wind and solar power output is indeed a dynamic change within the sampling interval. In order to observe the changes in correlation more clearly, specific fragments are extracted for analysis.

What is the power-use efficiency of PV and wind power plants?

By considering the flexible power load with UHV and energy storage, the power-use efficiency for PV and wind power plants is estimated when the electrification rate in 2060 increases from 0 to 20%, 40%, 60%, 80% and 100% (a) and the power generation by other renewables in 2060 increases from 0 to 2, 4, 6, 8 and 10 PWh year −1 (b).