基于直流母线接入的大功率模块化储能双向DC/DC变换器及功率流控制研究

项目名称： 基于直流母线接入的大功率模块化储能双向DC/DC变换器及功率流控制研究

项目编号： No.51477148

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 张纯江

作者单位： 燕山大学

项目金额： 82万元

中文摘要： 储能技术有助于间歇性能源发电的稳定性和可靠性，保证电力系统运行安全，是促进风力光伏发电规模化应用的关键技术之一，该方面的研究得到了世界各国的高度重视。本项目以MW级储能系统需求为目标，研究基于直流母线接入的大容量分布式模块化储能系统及关键技术。主要研究构建适合高压大功率的双向DC/DC变换器拓扑及功率双向传递控制方法；探索和研究分布式储能各个模块多种工作模式及其切换的动态模型，根据SOC及间歇能源发电状态控制变换器工作模式，实现各储能模块之间功率的合理分配；结合蓄电池和超级电容混合储能，研究大容量系统针对电压闪变、负载突变等非理想工作条件下所需要的快速响应控制策略，提高风电系统的低电压穿越能力。通过研究，解决储能系统大功率DC/DC变换器及系统控制的关键技术，形成较为系统性的分析理论和设计方法，为大功率直流储能装备的工程设计和应用奠定理论基础。

中文关键词： 分布式储能；双向直流变换器；直流母线；直流微网；新能源发电

英文摘要： Energy storage technology is helpful to the stability of intermittent energy power generation and ensures the operation security of power system. Energy storage technology is one of the key to promote the large-scale application of wind and photovoltaic power generation. The research got the attention from the countries all over the world. With the requirement of MW level energy storage system as the goal, the high power distributed modularization energy storage system and power flow control based on DC bus access will be mainly researched in this project. The high voltage high power bidirectional DC/DC converter topology and power bidirectional transmission control method will be studied. And the research of operating mode and dynamic model for energy storage module in distributed energy storage is necessary. The SOC(state of charge) and intermittent energy state are used to control the operating mode of converter, so as to realize dynamic load power sharing among different energy storage modules. Combining with battery-ultracapacitor hybrid storage, the rapid response control strategy under non ideal conditions for the voltage flicker and mutation load will be researched. Meanwhile the hybrid storage can also improve the low voltage ride-through (LVRT) capability of wind power system. Through the research in this project, the key technology will be solved for the high power bidirectional DC/DC converter and system control in energy storage system, and the basic theory and the design methode of an engineering application can be also formed in high power dc energy storage equipment.

英文关键词： distrbuted energy storage;bidirectional DC/DC converte;DC Bus;DC micro-grid;new energy power generation