| 引用本文: | Yajian Zhang,Chen Peng.[J].电力系统保护与控制,2023,(2):495-507.[点击复制] |
| Yajian Zhang,Chen Peng.Adaptive H∞ event-triggered load frequency control in islanded microgirds with limited spinning reserve constraints[J].Power System Protection and Control,2023,(2):495-507[点击复制] |
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| DOI：10.1186/s41601-023-00303-z |
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| 基金项目:This work was supported in part by the National Natural Science Foundation
of China under Grants 62173218, 61833011, 62103254, and the International
Corporation Project of Shanghai Science and Technology Commission under
Grant 21190780300. |
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| Adaptive H∞ event-triggered load frequency control in islanded microgirds with limited spinning reserve constraints |
| Yajian Zhang,Chen Peng |
| () |
| Abstract: |
| Using an islanded microgrid (MG) with large-scale integration of renewable energy is the most popular way of solving
the reliable power supply problem for remote areas and critical electrical users. However, compared with traditional
power systems, the limited spinning reserves and network communication bandwidth may cause weak frequency
stability in the presence of stochastic renewable active outputs and load demand fuctuations. In this paper, an adaptive event-triggered control (ETC) strategy for a load frequency control (LFC) system in an islanded MG is proposed.
First, a bounded adaptive event-triggered communication scheme is designed. This not only saves on network
resources, but also ensures that the control center has a sensitive monitoring ability for the MG operating status when
the frequency deviations have been efectively damped. Secondly, by fully considering the spinning reserve constraints and uncertain communication delays, the LFC system is described as a nonlinear model with saturation terms.
Design criteria for ETC parameters are strictly deduced based on Lyapunov stability theory. Finally, an ETC parameter
optimization algorithm based on random direction search is developed to reconcile the bandwidth occupancy and
control performance. The efectiveness of the proposed method is verifed in an MG test system. |
| Key words: Microgrid, Load frequency control, Event-triggered control, Nonlinear saturation, Time delay |
