小型户用光伏系统的设计与分析

发布时间：2018-05-10 21:26

本文选题：设计与分析 + 太阳能电池　；参考：《昆明理工大学》2017年硕士论文

【摘要】：由于化石资源的逐渐匮乏,新能源相关研究的课题越来备受关注。太阳能作为一种新型的清洁能源,已在世界各国科研领域中逐步得到了应用。面对我国能源消耗量大而储存能源相对较少等问题,在我国开展太阳能发电技术研究及应用,对我国经济发展和人民生活都有很重要的意义。小型户用光伏光伏系统由负载类型、光伏组件、存储装置、逆变控制系统构成。由于云南无电地区地理位置复杂性,传统电网技术难以覆盖。而云南地区日照条件优越,利用光伏发电技术解决无电地区人民基本用电问题具有很大的应用价值。首先,在太阳能发电系统原理基础上,本文研究了光伏发电系统不同类型的结构特点。依据云南地区的日照资源特性,选取适合该地区的离网发电系统类型。其次,根据光伏电池数学特性,对光伏电池在不同光照强度和环境温度下进行了模拟仿真;在蓄电池的原理的基础上,研究了蓄电池充放电特性及温度对蓄电池的影响;结合蓄电池的性质和原理提出了改进的蓄电池数学仿真模型。本文详细研究了小型户用系统设计流程,包括负载类型、光伏组件、蓄电池、控制器及逆变器的选取与分析。提出一种以缺电时数为指标的光伏供电系统可靠度的分析,同时还研究了不同坡度屋面光伏组件的间距选取方法。以昆明地区为例,通过调查一般用户用电需求,依据系统设计流程,完成了一套小型户用光伏系统的设计。经过专业光伏分析软件PVSYST的仿真与分析,设计出的系统性能良好。本文结果可为云南无电地区建设户用光伏系统中的相关问题提供参考依据及价值。
[Abstract]:Due to the gradually lack of fossil resources, the research of new energy has attracted more and more attention. As a new clean energy, solar energy has been gradually applied in the field of scientific research all over the world. In the face of the problems of large energy consumption and relatively little energy storage in China, it is of great significance to carry out research and application of solar power generation technology in China for the economic development of our country and the life of the people. Small household photovoltaic system is composed of load type, photovoltaic module, storage device and inverter control system. Traditional power grid technology is difficult to cover due to the complexity of geographical location in Yunnan power-free area. But the sunshine condition in Yunnan area is superior, it has great application value to use photovoltaic power generation technology to solve the basic electricity problem of people in the area without electricity. Firstly, based on the principle of solar power system, this paper studies the structural characteristics of different types of photovoltaic power generation system. According to the characteristics of sunshine resources in Yunnan area, the type of off-grid power generation system suitable for this area is selected. Secondly, according to the mathematical characteristics of photovoltaic cells, the simulation of photovoltaic cells under different light intensity and ambient temperature is carried out, and on the basis of the principle of battery, the charge-discharge characteristics of battery and the effect of temperature on battery are studied. An improved mathematical simulation model of battery is proposed based on the properties and principles of battery. This paper studies the design flow of small household system in detail, including the selection and analysis of load type, photovoltaic module, battery, controller and inverter. The reliability analysis of photovoltaic power supply system based on the lack of electricity hours is presented, and the distance selection method of photovoltaic modules with different slopes is also studied. Taking Kunming area as an example, a small household photovoltaic system is designed according to the system design process by investigating the general consumer demand. Through the simulation and analysis of the professional photovoltaic analysis software PVSYST, the system has good performance. The results of this paper can provide reference and value for the related problems in the construction of household photovoltaic system in no electricity area in Yunnan Province.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM615

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