Optimization Design And Technical And Economic Evaluation Of Village Power Stations In Jianchang,Huludao

With the depletion of fossil energy and the building of environment-friendly social awareness,governments around the world have made forward-looking decisions: using solar energy resource as strategic resource for sustainable development.Moreover,the energy issue is a common problem in all countries of the world.How to use energy efficiently depends not only on the environment on which people depend,but also on whether sustainable development can be achieved,and the demand for energy increases with the development of economy and society.Traditionally,the form of coal power generation is clearly unable to meet demand.Solar energy resources are clean green energy,but low efficiency is the bottleneck for large-scale promotion and application of PV power generation.Therefore,the key issue is how to effectively increase the power generation of PV arrays,and increasing the power generation of PV arrays has become a research hotspot in the field of PV power generation.PV power stations have the characteristics of no pollution and high economic benefits.Through reasonable design and scientific construction,the economics of PV power stations can be greatly improved.In the research,aiming at improving the economics of PV power generation,the research conclusions have important practical significance for practical application to PV power plants.The PV power generation of the village-level power station in Jianchang County of Huludao was selected as the research object.Because the meteorological data was required during the design of the PV power station,the NASA and Meteonorm meteorological data were first analyzed.In addition,the number of series of PV power plant components,the optimal tilt angle and the field area are optimized,and the length of the wire,the array spacing and the access plan of the village-level power station components are finally determined.Secondly,from the initial purchase of inverter costs and inverter operating efficiency,the 250 kW and 500 kW inverters are compared,and the inverter and integrated inverter are optimized.Finally,The integrated inverter and the distributed inverter are compared from the economic income recovery period and efficiency.The inverter selection gives the optimal solution through simulation.Thirdly,the Pvsyst software experimental analysis platform is built by optimizing the access mode of PV power plant components,and the experimental data is input to analyze the feasibility of the program from the economic point of view.In addition,the technical evaluation of the design plan is carried out on the basis of determining the economic feasibility.Finally,when calculating the economic benefit analysis of PV power plants,the static recovery period,the actual system net present value and the dynamic recovery period are mainly used to determine the optimal design.