微网能量管理与运行优化

发布时间：2018-01-18 05:10

本文关键词：微网能量管理与运行优化　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：微网作为分布式电源的有效组织形式,不仅能充分发挥分布式发电技术在资源节约和环境保护方面的优势,同时还可有效解决其技术和管理难题。本文围绕微网能量管理与优化设计等相关内容,主要工作如下:(1)综合考虑微网系统组成的多样性和能量流动的复杂性,建立了微网内所包含的风力发电系统、光伏发电系统、柴油发电机、电池储能元件、电力电子转换元件的准稳态仿真模型,为后文的研究奠定了理论基础。(2)针对包含柴油发电机、风力发电机和电池储能系统的独立型微网,以运行成本最小为优化目标,建立了考虑系统网架结构特征的优化调度模型。选取风功率削减因数、发电机节点电压、电池充放电功率以及功率变换器的无功补偿功率作为优化变量,利用考虑潮流的遗传算法对模型进行求解。该模型不仅为包含网架结构的独立型微网优化调度提供了方法,同时还分析了不同的储能容量和储能接入位置对微网经济运行成本、系统网损和风电渗透率的影响。(3)在介绍了海岛独立型微网的意义和技术特征的基础上,主要分析了海岛独立型微网的规划设计方法。针对大万山岛具体算例,分别采用负荷跟踪运行策略和循环充放电运行策略,给出相应的配置方案,并对其经济性和技术性进行了分析。同时为满足相应的内部收益率与投资回收期要求,给出了不同补贴形式下的补贴水平,以维持项目的正常运行。最后给出了针对海岛型微网发展的商业模式及政策建议。
[Abstract]:As an effective organization of distributed power generation, microgrid can not only give full play to the advantages of distributed power generation technology in resource conservation and environmental protection. At the same time, it can effectively solve the technical and management problems. This paper focuses on the microgrid energy management and optimization design and other related content. The main work is as follows: 1) considering the diversity of microgrid system and the complexity of energy flow, the wind power system, photovoltaic system and diesel generator are established. The quasi-steady-state simulation model of battery energy storage element and power electronic conversion element lays a theoretical foundation for the later research. It aims at the independent microgrid which includes diesel generator wind turbine and battery energy storage system. Taking the minimum operation cost as the optimization objective, the optimal scheduling model considering the structural characteristics of the system network is established. The wind power reduction factor and the generator node voltage are selected. Battery charge / discharge power and reactive power compensation of power converter are the optimal variables. Genetic algorithm considering power flow is used to solve the model, which not only provides a method for optimal scheduling of independent microgrids including grid structure. At the same time, different energy storage capacity and energy storage access location on the economic operation costs of the microgrid are also analyzed. Based on the introduction of the significance and technical characteristics of the island independent microgrid. This paper mainly analyzes the planning and design method of island independent microgrid. The load tracking operation strategy and cyclic charging and discharging operation strategy are used to provide the corresponding configuration scheme for the specific example of Dawanshan Island. At the same time, in order to meet the corresponding internal rate of return and investment payback period requirements, the subsidy level under different subsidy forms is given. In order to maintain the normal operation of the project, the business model and policy suggestions for the development of island microgrid are given.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73

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