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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。
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本论文以微电网中的微电源为主要研究对象，重点工作在微电网的建模研究与仿真分析。本文详细分析了各微电源的数学模型及其工作特性，利用了Simulink软件构建了简化固体氧化物燃料电池、光伏电池、风力发电机等微电源的仿真模型。根据各个微电源的不同特性，从不同的侧重点对各微电源进行了仿真分析。分析比较了各种微电网控制策略的优劣势，并着重研究了V/f控制的基本概念和数学模型。并搭建了微电网的典型结构。关键词 微电网 微电源 V/f控制策略7352
毕业设计说明书（论文）外文摘要
Title The modeling and simulation of Microgrid
Abstract
Microgrid is a 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 impacts. It is through the integration of distributed generation units and the relationship between the distributed network，directly to make the distributed power generation units， power networks and end users 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 distributed power line， improve reliability and to promote social to development to the green， environmental protection，energy saving. Undoubtedly， the microgrid will be the next large grid’s complements and effective support， and the future trend of power system.
The main content of this paper is the modeling and simulation of Microgird and platform development, it focus on modeling of Micro-power and performance analysis. Various of micropower mathematical models and its features were analied, a simplified solid oxide fuel cell，photovoltaic cell，wind generation and diesel Power generators models were build using Simulink software. Modeling a voltage source inverter with V/f control strategy .Then a Microgrid simulation platform was built with micro power model.
Keywords Microgrid Micro-power Voltage/frequency control strategy
目 录
1 绪论 1
1.1 微电网的研究背景和意义 1
1.2 微电网的发展和现状 2
1.2.1 微电网在国外的发展状况 3
1.2.2 微电网在国内的发展状况 4
1.2.3 微电源的发展状况 5
1.3 本论文的内容 6
2 微电网中几种微电源的数学模型 8
2.1 固体氧化物燃料电池模型 8
2.1.1 固体氧化物燃料电池的基本原理 8
2.1.2 固体氧化物燃料电池的基本模型 8
2.2 光伏电池模型 11
2.2.1 光伏发电基本原理 11
2.2.2 基于光伏电池的数学物理特性建模 11