Evaluation Study on the Effect of Energy Storage to Smooth out Power Fluctuation in Integrated Water,Wind,Light and Storage System
With the development of new power system,the network operation of high proportion of new energy sources such as wind and photovoltaic is an important way to realize their large-scale development and utilization,and also an important way to save energy and reduce emissions under the background of double carbon policy.Due to the strong randomness and uncontrollability of wind power and photovoltaic output,the high proportion of wind power and photovoltaic access to the grid will inevitably produce huge fluctuations,thus reducing the quality of power and bringing a lot of inconvenience to the grid operation.It is an important issue to find out how to minimize the negative impact of the grid connection while absorbing a high proportion of wind power and PV.In this paper,we establish a model of wind power,photovoltaic and hydropower output,analyze the characteristics and trends of the output under different scenarios,and calculate and compare the output data of the combined energy system under different combinations according to their strong uncertainty,intermittency and periodicity.Taking a hydropower station as an example,a hydropower regulation-based water and scenery power generation system is established,and ultra-short-term energy storage devices are added into it,and it is found that this combined energy generation system can well suppress power fluctuations and achieve the highest power output with good economic benefits.
water,wind,light and storage systemthe output characteristicsultra-short-term storageoutput characteristicsoutput fluctuationsmoothing effect
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