中文摘要：

逆变型分布式电源以微网形式渗透到配电网，短路电流小、潮流双向流动，对传统继电保护提出了新的挑战。提出了利用微网多点电气信息，构建全网数据共享的复合式综合保护方案；闭环微网的运行结构；逆变型分布式电源并网逆变器的拓扑结构，介绍了复合式综合保护方案各模块的配置及功能，主、后备保护的协调配合，有利于微网的安全可靠运行。

英文摘要：

With inverter-based distributed generators penetrated into distributed network, it poses a new challenge for conventional protection methods in case of low short-circuit current and double-direction flow. Due to the advanced communication network, a compound protection scheme is proposed by using full electrical information and building data sharing. The operating structure of closed loop microgrid and the topology of grid inverter are formulated, and the configuration and function of modes are introduced. The main and backup protection provides a better solution for security and reliability of microgrid operation.