摘要
针对大量分布式电源并网运行问题,研究微网与电网协调运行模式。提出了一种基于多代理系统的含多微网电力系统的调度模式,利用微网的能量管理功能,消除单个DG的随机性,从整体上表现出微网的可控性。针对微网调度的特殊性,考虑微网电源与负荷的双重外特性以及微网"源荷"均随机的特点,建立了基于动态约束的微网调度模型,并在此基础上建立了微网与电网联合调度模型。提出了以类方差概念作为微分进化算法控制参数自适应调整依据,并采用改进的DE算法对一个含多微网电力系统进行仿真计算,结果显示微网参与调度表现出了良好的经济性和灵活性。该方法可为实现微网与电网协调运行提供建议。
Microgrid and grid co-operation dispatch strategies are researched for multiple distributed generations connected to a power system. A power system dispatching mode with multiple microgrid based on multi-agent system is proposed. Randomness of individual DG is eliminated utilizing the microgrid EMS, which reveals the controllability of microgrid in general. A microgrid scheduling model based on dynamic constraint is proposed considering the external characteristics and randomness of microgrid both as a source and a load, based on which a joint dispatching model of microgrid and power grid is built. A class variance concept is proposed as the adjustment bases of differential evolution algorithm controlling parameters. An advanced DE algorithm is used to simulate and calculate a power system with multiple microgrids, and the result shows a good economy and flexibility of microgrid scheduling. This method can be used for coordinated operation of microgrid and grid.
出处
《陕西电力》
2013年第4期42-46,60,共6页
Shanxi Electric Power
基金
国家重点基础研究发展计划项目(973计划)(2009CB219706)
关键词
多微网
协调运行
联合调度
动态约束
类方差
multiple microgrid
coordinated operation
dynamic constraint
joint dispatch
class variance
