光伏微电源的建模与仿真..docVIP

光伏微电源的建模与仿真 摘要 微电网是为整合分布式发电的优势,削弱分布式发电对电网的冲击和负面影响而提出的一种新的分布式能源组织方式和结构。它通过整合分布式发电单元与配电网,在一个局部区域内直接将分布式发电单元、电力网络和终端用户联系在一起,可以方便地进行结构和配置的优化。结合冷热电联供方案,能够提高能源利用效率,减轻能源动力系统对环境的影响,推动分布式电源上网,促进社会向绿色、环保、节能方向发展。无疑,微电网运行将成为未来大型电网的有力补充和有效支撑,是未来电力系统的发展趋势之一。 从能源供应的诸多因素考虑，太阳能无疑是符合可持续发展战略的理想绿色能源。全球能源专家们认定，太阳能将成为本世纪最重要的能源之一。光伏并网逆变器按照拓扑结构可分为单级式和双级式两大类，本文采用双级式光伏发电作为微电源模型进行仿真分析。光伏发电系统中，要提高整体效率，一个重要的途径 是实时调整光伏阵列模块工作点，使之始终工作在最大功率点附近，即最大功率点跟踪。最大功率点跟踪的方法有很多种，但应用最广泛的是扰动观察法和电导增量法，本文对扰动观察法做了详细分析，给出了算法设计，并建立了光伏电池仿真模型对算法结果进行了仿真，验证了算法的正确性。 关键词　太阳能 ；光伏发电；光伏并网逆变器；光伏阵列模块；最大功率点跟随 Modeling and Simulation of micro power PV Abstract Microgrid is proposed new organization and structure of the distributed energy to integrate the advantages of distributed generation,reduce the impact of distributed generation on the grid and negative impact.It is through the integration of distributed generation units and the relationgship between the distributed network,directly to make the distributed power generation units,power network and end user together in a local area.It can optimized the structure,and configuration easily.Combined with CCPH program,it can improve energy efficiency,reduce the impact of energy power systems on the environment,promote the distributed power line,improve relability and to promote social to develepment to the green,environmental protection,energy saving.Undoubtely,the microgrid will be the next large grids complements and effective support,and the future trend of power system. From energy supply of many factors to consider，Solar energy is undoubtedly meet the sustainable development strategy of ideal green energy 。Global energy experts that, the solar energy will become the most important one of the energy 。Photovoltaic (pv) grid inverter according to the topology structure can be divided into the single level type and double levels of two kinds big ，I want to adopt double levels of photovoltaic power generation as the power source model simulation analysis .Photovoltaic power gener