Distributed Event-Triggered Secondary Voltage Control for Microgrids With Time Delay

2019 ◽  
Vol 49 (8) ◽  
pp. 1582-1591 ◽  
Author(s):  
Yijing Xie ◽  
Zongli Lin
Keyword(s):  
Time Delay ◽  
Voltage Control ◽  
Secondary Voltage ◽  
Event Triggered

Distributed event-triggered mechanism for secondary voltage control with microgrids

2018 ◽  
Vol 41 (6) ◽  
pp. 1553-1561 ◽  
Author(s):  
Jing Shi ◽  
Dong Yue ◽  
Shengxuan Weng
Keyword(s):  
Control Strategy ◽  
Voltage Control ◽  
Control Performance ◽  
Practical Application ◽  
Limited Bandwidth ◽  
Distributed Generators ◽  
Control Scheme ◽  
Secondary Voltage ◽  
Simulation Results ◽  
Event Triggered

This paper presents a secondary voltage control scheme with a distributed event-triggered mechanism for multiple distributed generators in droop-controlled microgrids. First, considering the issue of limited bandwidth of a communication network in a practical application, two types of distributed event-triggered mechanisms are proposed to reduce the information transmission pressure, while preserving the desired control performance. Then, based on the proposed triggering schemes, distributed secondary controllers are designed for distributed generators. Finally, simulation results demonstrate that by using the control strategy, the voltages of distributed generators are synchronised to their nominal values.

Adaptive event-triggered control for master-slave switched systems subject to attacked state-dependent switching law

2021 ◽  
pp. 014233122098594
Author(s):  
Lingcong Nie ◽  
Xindi Xu ◽  
Yan Li ◽  
Weiyu Jiang ◽  
Yiwen Qi ◽  
...  
Keyword(s):  
Time Delay ◽  
Switched Systems ◽  
System Performance ◽  
Actuator Saturation ◽  
Sufficient Conditions ◽  
Switched System ◽  
Switching Law ◽  
Variable Threshold ◽  
Event Triggering ◽  
Event Triggered

This paper investigates adaptive event-triggered [Formula: see text] control for network-based master-slave switched systems subject to actuator saturation and data injection attacks. It is an important and unrecognised issue that the switching signal is affected from both event-triggering scheme and network attacks. An adaptive event-triggering scheme is proposed that can adjust the triggering frequency through a variable threshold based on system performance. Furthermore, considering the impacts of transmission delays and actuator saturation, an event-triggered time-delay error switched system is developed. Subsequently, by utilizing piecewise Lyapunov functional technique, sufficient conditions are derived to render the time-delay error switched system to have an [Formula: see text] performance level. In particular, the coupling between switching instants and data updating instants is analyzed during the system performance analysis. Moreover, sufficient conditions for the desired state-feedback controller gains and event-triggering parameter are presented. Finally, a numerical example is given to verify the effectiveness of the proposed method.

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