Research On Comprehensive Benefit Evaluation Of Receiving-End Power Grid Large Scale Energy Storage Projects

With the increasing demand for clean and low-carbon energy transformation,global clean energy has been developed rapidly,and large-scale and high proportion of renewable energy has been developed and utilized by the grid at the receiving end.But the randomness and intermittency of renewable energy make the power system face great pressure in maintaining voltage and frequency stability.As a key technology in the construction of a new generation of power system,energy storage can effectively support the safe and stable operation of the receiver power grid.However.the large-scale application of energy storage technology in the receiving end grid is faced with many problems.such as large investment in the early stage,great difficulty in operation and maintenance,unclear profit model and lack of business model,etc.The above problems limit the economic,social and market development of large-scale energy storage in the receiving end grid.Therefore,fully exploring the application scenarios of large-scale energy storage in the receiving power grid,comprehensively evaluating the comprehensive benefits of energy storage projects,and guiding the development of large-scale energy storage projects are of great significance to the healthy development of the power system.First of all,this article investigates the research on the evaluation system of energy storage projects,evaluation methods of energy storage projects,and typical application scenarios and values of energy storage.Research on comprehensive benefit evaluation at home and abroad is mostly for specific scenarios,and lacks comprehensive consideration of each application scenario.By studying the technical principles and technical and economic characteristics of related energy storage,combined with comprehensive evaluation related theories,power grid project related benefit evaluation methods,various types of weighting and evaluation methods were compared and analyzed to determine the comprehensive benefit evaluation method in this paper.Secondly,this article summarizes the typical application scenarios,application modes and application values of current energy storage projects,combined with the demand characteristics of the receiving power grid,from the four dimensions of energy efficiency.economy,society and environment,screening the energy storage projects on the receiving grid side Comprehensive benefit evaluation index,establish a comprehensive benefit evaluation system for energy storage projects that takes into account the actual operating characteristics of the receiving power grid and the actual application needs of the project.And on this basis,the typical business model is analyzed and the subdivision index system of energy storage projects in different modes is determined,and the comprehensive benefit evaluation model of large-scale energy storage projects based on F-ANP receiving end grid is established.Finally,in order to verify the rationality of the comprehensive benefit evaluation model proposed in this paper based on the F-ANP receiver grid side large-scale energy storage project.an empirical analysis of the 100-megawatt energy storage project was carried out,and the comprehensive benefit level of the energy storage project was comprehensively evaluated.The analysis results proved the effectiveness of the model proposed in this paper.Based on the evaluation results of the project,the economic benefits of large-scale energy storage projects are analyzed,the potential problems of the market development and business model of large-scale energy storage projects on the receiving end grid side are discussed,and the positioning and decision-making Suggestions for the future development of large-scale energy storage on the grid side of the receiving end are proposed.