直流系统混合储能与蓄电池单独储能的对比  

Comparison research on hybrid energy storage and battery separate energy storage for DC system of substations and power plants

作　　者：张晓东[1] 崔学深[1] 张自力[1] 高巧云[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《电源技术》2016年第2期348-350,387,共4页Chinese Journal of Power Sources

摘　　要：针对变电站和发电厂直流系统中铅酸蓄电池容量裕度高、输出功率易下降、可靠性低等问题,结合超级电容器比功率大的优点,使用两者组成了一种混合储能直流系统,改进现有的铅酸蓄电池单独储能系统。首先对比分析了超级电容器与铅酸蓄电池的技术参数;然后给出了混合储能直流系统的电路拓扑、工作原理和相关元件数学模型;最后,针对突加负载的工况,分别通过仿真计算和实验研究,对比分析了蓄电池单独储能与混合储能系统的性能。结果表明,混合储能系统能够有效提高直流系统输出功率,减小蓄电池配置容量裕度,增强系统可靠性,具有良好的工程应用价值。To solve the problems of lead acid battery exiting in DC system of substations and power plants such as high battery capacity margin,reduction of output capacity and low reliability,a hybrid energy storage system was put forward to improve the existing separate battery energy storage system which made full use of the advantages of super capacitor high power density. Firstly, super capacitor and lead acid battery were compared and analyzed on their technical parameters. Secondly,hybrid energy storage circuit topology,working principle and related element mathematical models for DC system were provided. Finally, performance comparison of battery separate energy storage and hybrid energy storage were compared and analyzed by the simulation and experiment research with the consideration of the sudden load condition. The comparison results show that hybrid energy storage can effectively improve the output capacity of DC system, reduce the capacity margin of battery configuration and enhance the reliability of DC system,being of great value in engineering application.

关 键 词：混合储能 蓄电池单独储能 直流系统 超级电容器 

分 类 号：TM912[电气工程—电力电子与电力传动]