Finite‐time consensus for frequency and voltage restoration in microgird under communication interruptions

Abstract

Summary This paper presents a distributed secondary control strategy based on finite‐time consensus protocol for islanded microgrids to ensure the stability of frequency and voltage. Simple droop control cannot achieve high‐precision adjustment due to its inherent shortcomings. Although traditional secondary control can solve this problem, the required conditions are harsh and the system has poor robustness. Based on finite‐time consensus protocol, the proposed distributed secondary control is completely distributed, and agents of network layer only communicate through peer‐to‐peer sparse networks without a central node, so the frequency and voltage remain stable and reach the nominal value within the set time that then improves the system reliability and robustness. Moreover, the improved extreme learning machine, where the empirical risk and structural risk are involved, is used to predict the missing part to deal with the problem of packet loss and communication interruptions. The effectiveness of the intended methods is verified by the simulation of an islanded microgrid.

A Consensus-Based Distributed Two-Layer Control Strategy with Predictive Compensation for Islanded Microgrid CPS against DoS Attack

“…erefore, the distributed control mode [4,5] is generally used in microgrid. In particular, the multi-agent control method [6,7] based on the consensus protocol is widely used to solve the problems of voltage regulation, frequency regulation, and optimization [8][9][10][11] in hierarchical control due to its simple structure, flexible control, and only sparse communication. With the continuous development of the intelligent construction of the power grid, the microgrid gradually has the relevant characteristics of the cyber-physical system (CPS).…”

Optimal control of electrical vehicle incorporated hybrid power system with second order fractional‐active disturbance rejection controller

“…In Reference 25, an adaptive control of frequency‐voltage functioning of a hybrid‐power system is created. Similarly, in References 26 and 27, a concurrent frequency & voltage control is discussed. Despite the fact that the literature mentioned above has done ample work on frequency control and have introduced several modified concepts, a synchronized LFC‐AVR operation for concurrent frequency & voltage control has gotten little attention.…”