光伏发电汇流装置的设计与研究

发布时间：2018-03-06 18:27

本文选题：光伏汇流装置　切入点：LPC1114　出处：《广西大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着光伏发电技术的不断提高,太阳能光伏发电系统对其各功能组件提出了更高要求。光伏组件的转换效率随其使用数量增加而提高,但占用面积大,系统内部连接成本高,为了减少光伏组件与逆变器之间的连线,并在光伏组件和逆变器之间加以监控和保护,就需要将多路光伏组件的输出进行汇流和保护后,变为较少路的光伏电流输出,最后输入到逆变器。因此,在光伏发电系统中对智能化的光伏汇流装置进行研究和设计具有重要意义。本文在分析光伏电池组件特性的基础上,重点研究了光照强度、温度、雷击对光伏系统性能的影响。研制了一套具有上位机监控功能的智能光伏汇流装置系统。该装置以ARM单片机LPC1114为控制核心,设计了工作电源模块电路,温度检测采样电路,电流电压检测电路,防雷单元,装置显示电路,RS485通信电路,最后为实现上位机与光伏汇流装置通信及其对装置在线监控,设计了基于LabVIEW的上位机监控系统,实现了对光伏发电系统中光伏组件的汇流、保护、监控作用。本文对光伏汇流装置的硬件及其上位机的软件进行了重点设计。最后通过大量的实验,验证了该装置在光伏发电系统中的稳定性和可行性,优化了系统的拓扑结构,提高了系统的可靠性和可维护性。
[Abstract]:With the continuous improvement of photovoltaic power generation technology, the solar photovoltaic system has put forward higher requirements for its functional components. The conversion efficiency of photovoltaic modules increases with the increase of the number of photovoltaic modules, but the area occupied is large, and the cost of internal connection of the system is high. In order to reduce the connection between the PV module and the inverter and monitor and protect the PV module and inverter, it is necessary to converge and protect the output of the multi-channel PV module into a smaller output of photovoltaic current. Finally, the inverter is input to the inverter. Therefore, it is of great significance to study and design the intelligent PV confluence device in the photovoltaic power generation system. Based on the analysis of the characteristics of photovoltaic cell modules, the light intensity and temperature are studied in this paper. The effect of lightning stroke on the performance of photovoltaic system. A set of intelligent PV confluence device system with the function of upper computer monitoring is developed. The working power module circuit and temperature detection sampling circuit are designed with ARM single chip computer LPC1114 as the control core. The current and voltage detection circuit, lightning protection unit, device display circuit and RS485 communication circuit are designed. Finally, in order to realize the communication between the upper computer and the photovoltaic confluence device and the on-line monitoring of the device, a monitoring system of the upper computer based on LabVIEW is designed. The functions of confluence, protection and monitoring of photovoltaic modules in photovoltaic power generation system are realized. In this paper, the hardware of PV confluence device and the software of its upper computer are mainly designed. Finally, through a lot of experiments, the stability and feasibility of the device in photovoltaic power generation system are verified, and the topological structure of the system is optimized. The reliability and maintainability of the system are improved.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615

【参考文献】

中国期刊全文数据库前10条

1 郭贵雄;彭宇;;浅谈光伏系统配套之光伏防雷汇流箱[J];阳光能源;2010年04期

2 张钲浩;陈虹;靳召东;;基于光伏电站数据采集与监测仪表的设计[J];电测与仪表;2009年12期

3 王士元;王占友;;光伏组件受雷电影响的因数检测及仪器选择[J];电子测量技术;2012年01期

4 沙涛;彭柱椋;;太阳能光伏汇流箱监测系统设计[J];电子科技;2013年03期

5 张彦;鲍汝平;王国忠;;光伏汇流箱通信可靠性影响因素和检测方法[J];低压电器;2013年01期

6 郝玉哲;白建波;张臻;姜猛;刘升;;一种阴影情况下光伏组件输出特性的计算方法[J];可再生能源;2012年09期

7 杨洁;孙以泽;徐洋;;微气候对单晶硅光伏阵列特性曲线的影响[J];可再生能源;2013年10期

8 魏建明;;德国光伏产业发展概况[J];太阳能;2006年04期

9 李芬;陈正洪;成驰;蔡涛;杨宏青;申彦波;;武汉并网光伏电站性能与气象因子关系研究[J];太阳能学报;2012年08期

10 张相明;;一种新型光伏发电智能防雷汇流箱的设计与研究[J];沈阳工程学院学报(自然科学版);2013年02期