基于自律分散系统的直流微电网稳定控制器优化设计  

Optimization Design of DC Micro-grid Stability Controller Based on the Autonomous Decentralized System

作　　者：王皓界 韩民晓[1] Josep M.Guerrero 栾文鹏 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206 [2]奥尔堡大学能源技术系 [3]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2016年第2期360-367,共8页Proceedings of the CSEE

基　　金：国家国际科技合作专项(2014DFG72620)~~

摘　　要：基于储能的直流微电网稳定控制器(stability controller,SC)在直流微电网中发挥重要作用,但是在孤网轻载条件下多台SC同时运行会引起较大的换流损耗。为了提高多SC并联运行时的全局效率,提出了基于自律分散系统的优化方案,各SC通过逻辑运算迭代算法得到全局SC信息,再结合本地直流母排电压信息调节SC运行数量及其下垂曲线特性,在保证直流微电网并网、孤网条件下稳定运行的同时对各换流器输出电流进行实时调节,使运行的SC都工作在效率最高点附近,实现SC效率的全局优化。通过优化,各SC能够根据直流母排电压自适应调节其下垂特性,并且负载越轻,优化效果越明显。DC Micro-grid stability controller（SC） which is connected with storage plays an important role in DC micro-grid. However, the converter losses will be increased when the load is light under the condition of island operation while multi SCs are parallel operating. In order to increase the efficiency when multi SCs parallel operating, the optimization scheme based on the autonomous decentralized system was proposed. Every SC can receive the other SCs information by logical operation iterative algorithm, thus binding local voltage detection the quantity and droop characteristic of operating SC can be real time regulated. Ensuring micro-grid steady operation under the condition of grid connected and the condition of island, all the running SCs efficiency will approximate to maximum and the globe efficiency optimization can be realized. Based on optimizing, every SC can self adaptively regulate its droop characteristic, and the optimization effect will be more obvious as the load decreases.

关 键 词：直流微电网 稳定控制器 自律分散系统 下垂控制 效率优化 逻辑运算迭代算法 

分 类 号：TM71[电气工程—电力系统及自动化]