Due to line impedance mismatches, nonlinear loads and other reasons, the traditional droop control algorithms have great limitations on the control of reactive power sharing. Distributed control algorithms based on hierarchical structure have become an effective approach for reactive power sharing compared with traditional centralized control methods. In this paper, an event-triggered control algorithm based on stability analysis of Lyapunov method is put forward in order to satisfy the demand of low-bandwidth communication for distributed generator in islanded microgrid. Subsequently, a distributed hierarchical control scheme adopting proposed event-triggered strategy is designed to achieve proportional reactive power sharing in an islanded microgrid. Finally, the feasibility and validity of the proposed algorithm are further verified in MATLAB/Simulink environment.

由于线路阻抗失配，非线性负载和其他原因，传统的下垂控制算法在无功共享控制上有很大的局限性。与传统的集中控制方法相比，基于分层结构的分布式控制算法已成为一种有效的无功共享方法。提出了一种基于Lyapunov方法稳定性分析的事件触发控制算法，以满足孤岛微电网分布式发电机低带宽通信的需求。随后，设计了一种采用提议的事件触发策略的分布式分层控制方案，以在孤岛微电网中实现比例无功功率共享。最后，