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Optimal Configuration Of Multi-energy Storag Esystem In Standalone Microgrid

Posted on:2019-05-19Degree:MasterType:Thesis
Country:ChinaCandidate:C T WangFull Text:PDF
GTID:2382330566989043Subject:Power system and its automation
Abstract/Summary:PDF Full Text Request
With the constant scarcity of fossil energy and the increasing demand for environmental protection,the proportion of clean energy utilization is increasing.The proposal of energy internet has become one of the key ways to solve the above problems.As an important part of the energy internet,the integrated energy microgrid will become one of the trends in the development of future energy systems.The integrated energy micro-grid utilizes the Internet of things technology and information technology to uniformly integrate and implement dispatching for all energy-supplying devices in the region,so as to achieve the effect of optimizing the energy supply for the district's cold,thermal,and electrical loads and improving the energy efficiency.In order to consume renewable energy and enhance the flexibility of the microgrid to achieve the complementary advantages of various forms of energy storage,the microgrid has introduced an energy storage system that can be used for mult i-energy storage.This paper proposes a multi-energy approach for independent microgrid.Storage configuration method,the specific content is as follows(1)Presented the latest research trends of energy storage technologies,multi-energy complementary systems,independent microgrid,and energy storage optimization configuration technologies;analyzed the important application significance of energy storage technologies and multi-energy complementary technologies in the context of energy internet;Micro-grid typical structure,and establish wind power generation model,cogeneration unit model,multi-energy storage system model containing power storage and heat storage;introduce relevant theoretical basis for energy storage battery life estimation,includi ng factors affecting energy storage battery life and rain Flow counting method;describes the impact of independent micro-grid load characteristics on the configuration of multi-energy storage systems,the influence of micro-grid on the environment,the principle of optimized configuration of energy storage systems,and the principle of energy storage and dissipation of wind power;(2)Make a detailed introduction to the choice of power strategy of microgrid,and specifically introduce the start-up criteria,shut-off criteria,operating power criteria,and energy storage battery control criteria for conventional generator sets;and introduce the independent microgrid and grid-connected models.The principle of selecting the power allocation strategy based on the above criteria is adopted by the microgrid.The example illustrates the influence of different power allocation strategies for the microgrid on the total cost of the microgrid and the effect on the optimal configuration of the energy storage cell.(3)It uses a specific example to solve the optimal configuration results of an independent micro-grid multi-energy storage system,and analyzes the optimization results,the wind power consumption results,the comparison with the traditional configuration method,and the sensitivity of the energy storage system investment.And put forward the next research plan and expandable direction.
Keywords/Search Tags:Integrated energy microgrid, Energy storage system, Optimal configuration methods, Batterylife
PDF Full Text Request
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