孤立微网协同控制策略

The cooperative control strategy of microgrid

摘要:

针对微网储能系统受容量的限制,从而引起微网运行不稳定,提出一种改进的微网协同控制策略．采用双层协同控制结构,初级控制是蓄电池储能系统,次级控制是微网管理系统(MMS)．初级控制保证微网频率在可接受的范围内,次级控制保证微网中最大的备用容量．采用详细的微源模型,准确地描述了不同类型分布式电源原动机部分对微网系统的影响,建立带有详细微源模型的微网仿真系统,并进行了仿真,仿真结果表明:该协同控制策略具有良好的动态性能,并能够保证供电质量的要求,有较理想的应用前景．

Abstract:

To solve the problem of unstable operation caused by capacity limitation of microgrid storage system, this paper presents an improved microgrid cooperative control strategy, of which the structure is double-layer of cooperative control, that is the primary control is the battery energy storage system and the secondary control is a microgrid management system (MMS). The primary control ensures that the frequency of the microgrid is within the acceptable range, while the secondary control ensures the largest spare capacity in the microgrid. To accurately describe the different types of distributed power of the prime mover to affect the microgrid system, by using detailed micro-source model, a microgrid simulation system is established and simulated. The simulation results show that the cooperative control strategy has a good dynamic performance, and ensures the quality of power supply requirements. Therefore the cooperative control strategy of microgrid has a better application prospects.