The common problem of distributed generation and microgrid accessing to distribution network is analyzed. Photovoltaic generation, wind generation, energy storage devices and electric cars are considered as random power supply. From special design for application scene, power matching for engineering application, external interface terminal, two-level and three-level topology, abnormal over voltage response, monitoring control and operation and maintenance, grid-connected and island protection, capacity penetration and generating capacity penetration and so on, the problem of random power supply accessing to distribution network is analyzed, cloud-layer-terminal three-layer architecture of plug and play random power supply is put forward. It achieves the goals of cloud-operation and maintenance plug and play, layer-orderly control plug and play, terminal-application scene, power matching for engineering application, grid security, information interconnection and maximum generating capacity penetration plug and play.%分析了分布式发电到分布式电源及微电网接入配电网的共性问题。将光伏发电、风力发电、储能装置、电动汽车统一按“随机性电源”考虑。从应用场景专用设计、工程应用功率匹配、对外接口端子、两电平与三电平拓扑结构、过电压异常响应、监视、控制和运维、并网及孤岛防护、渗透率及有效发电量渗透率等方面，分析随机性电源接入配电网存在的问题，提出了即插即用随机性电源的云—层—端三层体系架构。云运维实现运行维护即插即用，层控制实现有序控制即插即用，端互联实现应用场景、工程应用功率匹配、安全并网、信息互联、最大发电量渗透率接入配电网的即插即用。
展开▼
