Research On Multi-power Capacity Configuration Of Virtual Power Plant

The virtual power plant aggregates a variety of distributed energy sources,realizes the stability and reliability of its overall output,provides efficient power to the grid,and ensures the safety and stability of its grid connection.However,the existing research mostly assumes that the virtual power plant power source belongs to the same investor,and does not explore the impact of the virtual power plant investor composition on the capacity allocation results.At the same time,the results of capacity allocation are mostly analyzed from the grid side,without considering the investment willingness of investors.Therefore,this article mainly studies the capacity allocation schemes and their economic benefits under different virtual power plants to analyze the feasibility of project construction and improve the investment enthusiasm of investors.First,on the basis of existing research,this paper constructs a single-investor virtual power plant and a multi-investor virtual power plant consisting of wind turbines,photovoltaic panels,energy storage batteries,and diesel generator sets,and sets the above two composition methods.Three planning scenarios for the six investors below.Second,referring to the definition of typical weather days in urban thermal environment design,a method for constructing typical day scene sets based on minimum relative deviation is proposed,and 12 typical wind,light,and load day scene sets in a year are constructed to achieve a balance The use of annual data as the planning scenario leads to long time spans,difficult calculations,and the use of typical four seasons as the planning scenarios to cause the selection of scenarios to be too rough.Third,take the minimum average annual construction and operation cost of each investor as the objective function,consider factors such as time-of-use electricity prices,construction subsidies,etc.,and use conditional value-at-risk to measure the economic risks caused by wind,light,and load uncertainties.It is combined with the objective function to construct a virtual power plant multi-power capacity configuration model.Finally,analyze and compare the risk sensitivity of the configuration results,and use the net present value and internal rate of return to evaluate the feasibility and anti-risk ability of the capacity configuration results based on the principle of cost-benefit analysis.The calculation example shows that the model proposed in this paper can give the corresponding capacity allocation plan according to the different investor composition methods of the virtual power plant and the investor’s risk preference,and carry out economic evaluation of the decision-making results.At the same time,when the virtual power plant investor structure becomes more complex,it will help increase the virtual power plant’s revenue and reduce the virtual power plant’s operational risks.