中低压柔性直流配电系统稳定性分析模型与机理研究综述

中低压柔性直流配电系统可高效接纳利用光伏、风电等新能源和储能等直流型电源,为电动汽车、数据中心及LED照明等直流型负荷提供高效可靠供电,因此得到广泛关注.然而由于系统内电力电子设备特性各异,直流网络拓扑复杂,控制策略多样,运行状态变化频繁且变化范围较大,使得直流配电网存在多时间尺度小扰动和大扰动稳定性问题.为此,首先对...

Review of stability analysis model and mechanism research of medium-and low-voltage flexible DC distribution system

Medium-and low-voltage flexible DC distribution system has received great attention because it can efficiently accept and utilize renewable energy such as photovoltaic, wind power, etc.,and DC sources such as energy storage, etc.,and provide efficient and reliable power supply for DC loads such as electric vehicles, data centers, LED lighting, etc. However, due to the various characteristics of power electronic equipment, complex topologies of DC network, diverse control strategies and frequent and wide-range variation of operating states, DC distribution systems have problems of small-disturbance and large-disturbance stability in multi-time scales. For that, the topology types and typical control strategies of DC distribution system are described firstly. Then, the research status of typical small-disturbance and large-disturbance stability of DC distribution system is reviewed respectively in detail. Finally, the researches of DC distribution system stability are summarized and prospected.