基于CAN总线的微网控制方法研究  

Research of micro-grid control method based on CAN bus

作　　者：罗泽林[1] 

机构地区：[1]成都农业科技职业学院,四川成都611130

出　　处：《电源技术》2015年第4期832-833,共2页Chinese Journal of Power Sources

摘　　要：微网是一种将各种小型分布式电源组合起来为小范围负荷进行供电的微型电网,具有结构灵活、可靠性高的基本优势。微网具有两种运行形式,一种是孤岛形式,一种是并网联接形式。为了提高这两种运行形式的稳定性,设计一种合理的微网控制方法是微网大范围推广的前提。以ATmegal6为核心,CAN总线为底层通信方式,实现了对微网的控制。为了进一步提高控制的精确度,采用基于下垂特性的P-f、Q-V与PQ控制方法相结合的控制策略。三种方式的结合可以实现负荷功率变化时功率的平衡共享,还可以解决微网无功和有功的有效控制的问题。Micro-grid is a kind of miniature power grid which can send power to smal-scale loads by combining various smal distributed generations.It has basic advantages including flexible structure and high reliability.It is a necessary product in the age of large power system. There are two working forms of micro-grid. One is island form and the other is grid-connected form. To improve the both stability, a proper method was designed to control micro-grid which would be the premise to popularize it on a large scale. To realize the control of micro-grid, the designing took ATmegal6 was as the core and CAN bus as the bottom of communication. To improve the control of accuracy, the control strategy consisting of P-f and Q-V based on drooping features and PQ control method was adopted. The combination of the three methods,on one hand can realize power sharing in a balanced way when power of loads changes.And on the other hand,and can solve the problem of micro-grid effectively control ing whether acting or not.

关 键 词：微网 控制策略 ATMEGAL6 CAN现场总线 

分 类 号：TM727[电气工程—电力系统及自动化]