The distributed control of DC microgrid is becoming increasingly important in modern power systems. One important control objective is to ensure DC bus voltage stability and proper current sharing with a reduced communication burden. This paper presents a new event-triggered distributed secondary control strategy for single-bus DC microgrid. Through this strategy, both current sharing and bus voltage regulation can be guaranteed. Moreover, through the event-triggering mechanism, each converter can decide locally when to transmit signals to its neighbours. In this way, the communication burden among converters is significantly reduced. Compared to existing results, the proposed strategy also enables various types of loads, including both linear and nonlinear loads, to be connected to the DC microgrid. Simulation and experiment results illustrate the effectiveness of the proposed strategy.

中文翻译：

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具有事件触发信号传输的直流微电网分布式二次控制

直流微电网的分布式控制在现代电力系统中变得越来越重要。一个重要的控制目标是确保直流总线电压的稳定性和适当的电流共享，同时减少通信负担。本文提出了一种新的单母线直流微电网事件触发分布式二次控制策略。通过这种策略，可以保证均流和总线电压调节。此外，通过事件触发机制，每个转换器可以在本地决定何时向其邻居传输信号。这样，转换器之间的通信负担显着减少。与现有结果相比，所提出的策略还可以将各种类型的负载（包括线性和非线性负载）连接到直流微电网。