Energy Efficiency Monitoring And Evaluation Of Distributed Photovoltaic System And Software Development

Photovoltaic(pv)power generation,easy to maintain and highly reliable,can reduce the consumption of unrenewable energy an d emission of greenhouse gas.In recent years,a group of policies have been made to encourage and support the development of pv power by the national and local government,which have led to rapid development of the distributed photovoltaic power generatio n.But due to the shortcomings in photovoltaic component matching,system design,equipment selection,operation and management,the overall efficiency of some power plants remain at a quite low level.What’s more,the energy efficiency of the distributed pv power generation system in China tends to be unsystematic.Therefore,research on the energy efficiency evaluation of distributed pv modules,junction box,inverter and other pv power generation system of whole process modeling work as the key to optim ize system design and equipment configuration,guide operation management and improve the overall efficiency,as well as the level of comprehensive evaluation.This paper mainly studies key technologies of the distributed pv power generation system,system modeling,energy efficiency monitoring and evaluation,testing of pilot station and verification of their application and related software development.The pilot applications show that the results of the distributed pv monitoring possible,energy efficiency measurable,operation and maintenance of energy efficiency predictable,and controllable,and the overall efficiency improved,which would provide scientific and technological support to the design,evaluation of the distributed pv program,modeling of correspondent equipment and operation,accordingly play an important role in improving the economic benefits and managerial efficiency.