基于双向变换器的蓄电池储能在微网中的特性研究
关键词 双向变换器 蓄电池储能系统 微电网
毕业论文设计说明书外文摘要
Title Characteristic research of the storage battery based on bidirectional converter in micro grid
Abstract
A Micro Grid (MG) can be defined as an LV network (e.g., a small urban area, a shopping center, or an industrial park) plus its loads and several small modular generation systems connected to it, providing both power and heat to local loads.
Micro grid is composed of micro power components, DC-DC converter, energy storage device, control system and load, it can run in the islanded operation or run in interconnected mode. Due to the micro grid capacity and inertia is relatively small, it is easily influenced by fluctuation from the load and distributed power , so there exists the power output of intermittent and volatility, the trend of complex network, relay protection and stability control problem.Among the existing storage forms ,the storage battery, based on bidirectional converter , includes advantages of its mature technology, low cost and high reliability ,is becoming the widest used technology in micro grid energy storage system.In this paper, i treat bidirectional converter based on battery energy storage system as the research object, study on its operation characteristics and supporting role in micro grid through the simulation.
Keywords Bidirectional converter Battery energy storage system Micro-Grid
目 次
1 绪论 1
1.1 选题的背景和意义 1
1.2 微电网基本概念 2
1.3 本文主要研究内容 5
2 蓄电池储能研究概述 7
2.1 蓄电池储能系统发展概况 7
2.2 蓄电池储能系统对微电网的作用 7
2.3 蓄电池储能系统充放电技术 7
2.4 本章小结 9
3 蓄电池储能系统主拓扑研究 10
3.1 蓄电池充放电过程中的基本参数 10
3.2 蓄电池充放电主拓扑 10
3.3 双向变换器基本原理 11
3.4 双向变换器 仿真 16
3.5 本章小结 19
4 微电源的建模与仿真 20
4.1 光伏电池基本原理 20
4.2 光伏阵列输出特性 22
4.3 光伏阵列 仿真 22
4.4 本章小结 24
5 蓄电池储能系统建模与仿真 25