【作者】 张巍；

【导师】 卢铁兵； 曲军；

【作者基本信息】 华北电力大学(北京) ， 工程硕士（专业学位）， 2017， 硕士

【摘要】 随着社会的进步和科学技术的发展,人们对能源的需求越来越大。近些年来,作为绿色环保的新能源发电方式,光伏发电在我国政府的大力支持下飞速发展,它从根本上解决了以火力发电为主的能量转换形式带来的环境污染和能源匮乏问题。此外,光伏发电系统还具备安装灵活、投资成本较低、工作年限长、根据负荷变化调整迅速等优势,目前,分布式光伏发电已经成为一种新型的发电应用方式,且不少光照充足的地区正逐步尝试将其接入到配电网线路中进行并网发电。这种分布式接入配电网无疑会打破原有配电网的结构形式和管理方式,将为电网的电能质量、继电保护、稳定运行带来新的变化。通过研究和分析山西晋中地区太阳能资源分布情况,明确了在晋中电网建设分布式光伏发电的可行性和必要性。本文着眼于实际工程建设,着重研究了分布式光伏发电在晋中电网的接入系统设计方案。首先分析了晋中地区的气象条件和地理条件,描述了晋中地区分布式电源发展现状。其次分析了分布式光伏发电系统的接入对电网电能质量、安全保护等的影响,并提出相应改进措施。接着根据分布式光伏发电系统的接入容量和用户需求,结合国家电网公司分布式光伏发电接入系统典型设计,给出几种典型的接入配电网方案。最后给出晋中地区某分布式光伏发电站的案例进行实例分析,对晋中地区分布式光伏发电并网方式具有一定意义上的指导性。更多还原

【Abstract】 With social progress and quick development of science,people’s demand of energy is increasing.In recent years,as an environmental friendly method of power,photovoltaic power is rapidly developing.It solves the problem brought by thermoelectric power.It has the advantages of flexible installation,low investment,long working life and can quickly adjust to load.Nowadays,photovoltaic power is becoming more and more popular.At some place which has strong light intensity,photovoltaic power is tried to be linked with distribution network.It will undoubtedly change the distribution network and the management methods as well.After research and analysis the distribution of solar resources,we made a conclusion that it was feasible and necessary to build photovoltaic power station in Jinzhong,Shanxi.In this paper,we focused on the actual engineering construction of distributed photovoltaic power station and researched more about access system design.Firstly,we analyzed meteorological conditions and geographical conditions of Jinzhong,talked about its current situation of distributed power supply.Then,we analyzed the influence of power quality and security.Some improvement methods are raised here.After these,based on the access capacity of distributed photovoltaic power systems and the demand of users,we promoted several typical schemes of access scheme in accordance with typical design published by State Grid Corporation of China.At last,we gave a sample of distributed photovoltaic power station of Jinzhong,which can be a guidance of photovoltaic power station construction.更多还原