In order to further improve the power system ramping flexibility
this paper puts forward the method of ramping flexibility collaborative planning of high proportion of renewable energy power system considering lifespan dynamic investment of multi-types energy storage. Firstly
considering that the maximum charging and discharging power and state of charge (SOC) characteristics of energy storage shows obvious deterioration over their service lifespan
additional capacity needs to be installed each year during subsequent operation
therefore
this paper established a lifespan deterioration model for energy storage based on experimental data and proposed a dynamic investment allocation method that takes into account the additional investment during the lifespan. Secondly
based on the classification of energy storage by charging and discharging speed and unit capacity investment
a multi-type energy storage and coal fired power plant transformation integrated ramping flexibility coordinated planning and configuration model was established for high proportion of new energy systems. Thirdly
based on the ramping requirements of different types of energy storage and coal fired power plant transformation
the large-scale multi-variable model was divided into multiple stages of small-scale solution processes
in which the unknown variables were solved in each stage. Finally
the IEEE 30-node system was used as an example to verify the correctness and effectiveness of the proposed model.
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