Optimazation And Analysis Research Of Distributed Energy Resources System

Becauseof the global natural disasters in recent years,the traditional power system was heavilydamaged,which destroyedconvenience of modern life used to enjoy.DES(Distributed Energy System)wasoffered anopportunity.As a new variation of energy systemwith natural gas or other clean energy,as well as the energy cascade utilization,it could be provided users with CCHP(combined cooling heating and power)by DES,avoiding the disadvantages such as long transmission,meanwhile,improving the energy efficiency,energy conservation and emissions reduction benefits significantly,so DESwas more and more getting the favour of all countries.Based on the study of DES,the main points of this thesis were as follows:Firstly,the paper was analysed the choice of DES's engine through the comparison of the characteristics of gas turbine and diesel engine,and by the calculation and analysis the cost,income and investment cycle of gas turbine and diesel enginesystems.It was sought out two engines' power scope suited for DES.Then it was analysed and optimized lots of typical configuration models of DES and their T-S cycle.Models of Gas turbine DES were built by the Matlab software and it was designed matched for different schemes,meanwhileit was researched that analysis energy efficiency of the steam system,ratio of heat to electricity allocation and DES were analysed.Next as KeFeng power station as an example for analysis,it was designed that is the optimal scheme suitable for KeFeng DES.it was simulated the performance of the model for the scheme by the Matlab software,Then it was compared the simulation with the performance test data and verified the simulation and suitable schemerationality.At last,it was worked out the dynamic response simulation of the DES suitable scheme.Finally,it was evaluated optimized efficiency and system's total cycle efficiency of the DES suitablescheme,meanwhile it was assessed economical efficiency and environmental conservation.It was confirmed the optimal scheme feasibility and the energy comprehensive utilization ofthe suitable DES scheme at the same time.