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原文信息：
Self-triggered coordination of distributed renewablegenerators for frequency restoration in islanded microgrids: A lowcommunication and computation strategy
原文链接：
https://www.sciencedirect.com/science/article/pii/S2666792423000070
Highlights
Microgrids with high-penetration distributed renewablegenerators.
Self-triggered coordination of distributed renewablegenerators.
Frequency restoration with high communication andcomputation efficiency.
A linear clock for monitoring the triggering action.
Naturally Zeno behavior freeness for theself-triggered mechanism.
Abstract
Microgrid provides a promising solution to consume moredistributed renewable energies. To coordinate the increasingly developeddistributed renewable generators in a high flexibility and high efficiency way,distributed event-triggered mechanisms have been widely investigated in theliterature to reduce the communication requirement and hence improve thecontrol performance of microgrids. However, most of the event-triggeredmechanisms mandate continuous calculation of complicated triggering conditions,which may in turn impose the computation burden of the controller and increaseadditional energy cost. To this end, this paper presents a distributedself-triggered control strategy for the frequency restoration in islandedmicrogrids with the aid of a linear clock. With this self-triggered solution,each distributed generator’s controller decides its own control andcommunication actions based on monitoring the linear clock, which excludescontinuous calculation of any triggering conditions. Thus, the communicationand computation costs can be reduced simultaneously. Moreover, Zeno behaviorcan be naturally excluded by the above design. The results of theoreticalanalysis and simulations show that the proposed distributed self-triggeredcontrol scheme can effectively coordinate distributed renewable generators withvery low communication and computation requirements. Therefore, this researchcan improve the coordination efficiency of microgrids greatly, which is veryuseful for guiding the efficient operation of large scale distributed renewablegenerators.
Keywords
Distributed renewable generators
Frequency restoration
Distributed control
Self-triggered mechanism
Control efficiency
Islanded microgrid
Graphics
Fig. 2. Block diagram of the proposed self-triggeredsecondary controllers.
Fig. 3. Single-line diagram of the test MG model.
Fig. 4. Performances of the proposed controllers: (a)Frequencies of DGs; (b) Active powers of DGs.
Fig. 5. Triggering time instants: (a) Frequencycontroller; (b) Active power controller.
Fig. 6. Frequencies of DGs under the comparisoncontrollers: (a) Traditional controller; (b) Event-triggered controller; (c)Self-triggered controller.
Fig. 7. Triggering time instants: (a) Traditionalcontroller; (b) Event-triggered controller; (c) Self-triggered controller.
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