孤岛模式下模糊控制与势函数法在微电网中的联合控制策略  

Combine control strategy of fuzzy control and potential function method in micro-grid with island model

作　　者：王雪 

机构地区：[1]都匀供电局,贵州都匀558000

出　　处：《贵州电力技术》2013年第11期62-65,共4页Guizhou Electric Power Technology

摘　　要：针对传统微电网孤岛模式下无功下垂特性的不精确性、负荷电压对多微电源存在时运行参数存在耦合等情况,提出构造势函数优化无功出力分配的策略。分析了分布式电源无功输出与空载电压的关系,并建立两者之间的势函数关系;同时对下垂增益过程进行模糊控制。降低不稳定因素对无功出力分配关系的影响。通过Matlab/Simulink建立模型,仿真结果表明了所提方案的有效性。Aiming at the situations that reactive droop was imprecise, and load voltage was coupled with micro source, this paper pro posed the strategy of structuring potential function to optimize reactive output. The relationship between reactive output of distributed generation and floating voltage was analyzed, and the potential function relationship was established. Through fuzzy control in droop gain, the influence of unstabilizing factor to the relation of reactive output distribution was reduced. The simulation result which was established by Matlab/Simulink showed the effectiveness of this scheme.

关 键 词：微电网 势函数法 孤岛模式 模糊控制 无功出力 

分 类 号：TM744[电气工程—电力系统及自动化]