Research On Optimal Allocation Of Distributed Energy Storage In User

In the power system,not only due to the current power generation capacity has always been unable to keep up with the growth rate of load,but also the concentration of using electricity and the lack of effective measures to stagger peak,it often appears the situation that lack of power rather than the amount of power shortage.And this situation will continue for a period of time,threatening the safe operation of the power system.Because the constraints of economic,environmental,technical policy and so on,the development power grid is difficult to keep up with the growth of user load demand,resulting that there will inevitably be some unreasonable structural problems in a period of time or even long-term in the process of scale development of power grid.Another way is to start from the user side,and add distributed energy storage equipment to smooth the curve of load characteristics and solve the power shortage.In addition,the distributed energy storage configured on the user side can achieve demand side management,and it also can to effectively smooth the load,reduce the peak-valley load difference and the power grid construction costs through the load regulation.When the electricity interruption it can be used as an emergency backup power supply to improve the reliability of power supply and reduce the power loss for user.Otherwise the distributed energy storage can compensate reactive and active power,balance the reactive and active power of the user side,and improve power quality and system operating stability.This dissertation takes the distributed energy storage device as the research object,and multifaceted analysis the benefits on the loss reduction and construction of power grid relatively to the centralized energy storage,then determines the types of energy storage which are suitable for user side to apply distributed energy storage based on the advantages and disadvantages of various energy storage types.At the same time,it compares the load characteristics of industrial load with resident load,and focuses on exploring the difference toconfigure energy storage device between the load near the resident and industry.Then selects a regional load to establish the model,and simulates this test to analyze the different effects of energy storage placed in the vicinity of the two aspects.And then it puts forward the various auxiliary systems of the energy storage device.And followed by a more comprehensive investment estimates of energy storage system,this paper takes a detailed analysis combined with the benefits from the power grid,power plants and industrial users carried out by energy storage.Through comprehensive calculation about the recovery period of the construction and operation costs of energy storage system,and then base on the useful life of energy storage to explore the ultimate benefits.Finally,based on the existing energy storage policies and other energy storage projects that have been run,it makes a brief description of the business model of distributed energy storage business model can be implemented on user side so that the user-side energy storage can be massively commercialized.