Design And Implementation Of Photovoltaic Roof Power Station

Facing enormous pressure on energy and environment,photovoltaic roof power station is developing rapidly.However,there are still many problems,especially for the control methods when connected grid.Smart micro grid has become one of the main control methods of photovoltaic roof power station,in order to overcome the instability of solar power generation and promote the large-scale application of solar power generation.Therefore,making PV roof power station as the research object,this paper studies its power generation system and intelligent micro-grid.Firstly,on the basis of background and significance of the research,the present situation and prospect of the development of photovoltaic roof power station are introduced in detail.This paper analyzes the characteristics of different photovoltaic roof power stations.Combining the various factors and the current application of PV roof power station,this paper introduces the relevant control technology of power plant power generation system,which provides the basis for the research on the control method of PV roof power station.Secondly,analysis the project site and project conditions,which can find that Xiangtan is suitable for the construction of photovoltaic roof power station.At the same time,the structure and characteristics of the photovoltaic roof power station are studied.The general layout of the power station is planned and then design the general layout plan,effect diagram,PV system design diagram and installation structure of the PV module.Based on the analysis of the development of photovoltaic cells,the selection,layout,installation and power generation of photovoltaic cells are estimated.That is to say,the annual capacity of photovoltaic roof power station is estimated to be about 10 million 400 thousand degrees.Thirdly,the control scheme of photovoltaic roof power station is studied.The scheme of power control system of power plant is analyzed which considered the voltage fluctuation,harmonic and reactive power balance.Then put forward the electrical control system,design the photovoltaic and micro grid system diagram and chose the main equipment.Considering the power lightning protection,electrical connection etc,puts forward the system protection scheme of the power station.Fourthly,the general principle of photovoltaic system access and the load of industrial park are analyzed.The paper puts forward three kinds of grid connected forms for the whole industrial park PV power station,namely,the low voltage 400V grid self usage,step-up lOkV bus access industrial park and smart micro-grid.The network connection scheme of each workshop is introduced in detail.At the same time,the power distribution room and step-up substation are equipped to ensure the smooth connection of each photovoltaic system.Finally,the monitoring system of PV roof power station is introduced.On the basis of the overall structure of the monitoring system,the hardware and software function design and related system functions of the PV roof power station monitoring system are introduced.According to the monitoring data,the operation results under different operating conditions are obtained.The detailed analysis of the result verifies the rationality and effectiveness of the proposed control method.