Control Strategies of DC-Bus Voltage in Islanded Operation of Microgrid

摘要：

This paper focuses on the energy management system and stability of DC bus in both grid-connected and islanded operations in microgrid system.The microgrid system consists of wind turbines,photovoltaic panels,batteries and supercapacitors,also includes both AC and DC zones.Voltage of DC bus must be kept stable especially in islanded operation.In gridconnected operation voltage of DC bus is controlled by inverter.Real power from renewable energy generations and storage system can be transferred to AC zone through DC bus.In islanded operation,inverter must be controlled to keep magnitude and frequency of AC bus stable,so storage system is used to regulate voltage of DC bus.Simulation results in the paper show that voltage of DC bus can be kept steady and power can be kept balance with the strategy in microgrid system.

关键词： microgrid:grid-connected operation:islanded operation:storage system

作者: Bo Dong Yongdong Li Zhixue Zheng

作者单位: Department of Electrical Engineering Tsinghua University Beijing,China

会议类型: 国际会议

会议名称: 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies(第四届电力设施管制、重建及能源技术国际会议 DRPT 2011)

会议地点: 威海

会议语种:英文

页码: 1671-1674

在线出版日期: 2011-07-06（万方平台首次上网日期，不代表论文的发表时间）