Distributed Finite-Time Secondary Control of Islanded Microgrids by Coupled Sliding-Mode Technique

This paper deals with the problem of voltage and frequency restoration in droop-controlled inverter-based islanded microgrids (MGs). The problem is solved using a novel tracking consensus secondary control protocol based on the sliding-mode approach, which not only guarantees the exact finite-time restoration among voltages and frequencies of an inverter-based islanded microgrid, but also preserves the active power sharing among distributed generations (DGs). For each distributed generator with no direct access to reference values, a finite-time distributed estimator is locally designed and implemented in each DG unit to provide the reference value of frequency and voltage in a finite time. Lyapunov analysis is employed to verify the associated stability and fast convergence time of the proposed controller. Finally, simulation results are are presented and analyzed to confirm the effectiveness of the proposed approach.

[1]  Alessandro Pisano,et al.  Distributed Robust Finite-time Non-linear Consensus Protocol for High-order Multi-agent Systems via Coupled Sliding Mode Control , 2019, 2019 6th International Conference on Control, Instrumentation and Automation (ICCIA).

[2]  Jacquelien M. A. Scherpen,et al.  Cooperative Voltage Control in AC Microgrids , 2018, 2018 IEEE Conference on Decision and Control (CDC).

[3]  Juan C. Vasquez,et al.  Distributed Secondary Control for Islanded Microgrids—A Novel Approach , 2014, IEEE Transactions on Power Electronics.

[4]  Yinliang Xu.  Robust Finite-Time Control for Autonomous Operation of an Inverter-Based Microgrid , 2017, IEEE Transactions on Industrial Informatics.

[5]  Juan C. Vasquez,et al.  Hierarchical Control of Droop-Controlled AC and DC Microgrids—A General Approach Toward Standardization , 2009, IEEE Transactions on Industrial Electronics.

[6]  Hongbin Sun,et al.  Distributed, Bounded and Finite-Time Convergence Secondary Frequency Control in an Autonomous Microgrid , 2019, IEEE Transactions on Smart Grid.

[7]  Alberto Cavallo,et al.  Fuzzy scheduling of robust controllers for islanded DC microgrids applications , 2019, International Journal of Dynamics and Control.

[8]  Alessandro Pisano,et al.  Voltage Restoration of Islanded Microgrids via Cooperative Second-Order Sliding Mode Control , 2017 .

[9]  Francesco Bullo,et al.  Breaking the Hierarchy: Distributed Control and Economic Optimality in Microgrids , 2014, IEEE Transactions on Control of Network Systems.

[10]  Frank L. Lewis,et al.  Distributed Cooperative Secondary Control of Microgrids Using Feedback Linearization , 2013, IEEE Transactions on Power Systems.

[11]  Alessandro Pisano,et al.  Robust consensus-based secondary voltage restoration of inverter-based islanded microgrids with delayed communications , 2018, 2018 IEEE Conference on Decision and Control (CDC).

[12]  Josep M. Guerrero,et al.  A Novel Distributed Secondary Coordination Control Approach for Islanded Microgrids , 2018, IEEE Transactions on Smart Grid.

[13]  J.A.P. Lopes,et al.  Defining control strategies for MicroGrids islanded operation , 2006, IEEE Transactions on Power Systems.

[14]  Haiqing Wang,et al.  Distributed Secondary Voltage Control of Islanded Microgrids Based on RBF-Neural-Network Sliding-Mode Technique , 2019, IEEE Access.

[15]  Alessandro Pisano,et al.  Robust Finite-Time Frequency and Voltage Restoration of Inverter-Based Microgrids via Sliding-Mode Cooperative Control , 2018, IEEE Transactions on Industrial Electronics.

[16]  Antonella Ferrara,et al.  Sliding Modes for Voltage Regulation and Current Sharing in DC Microgrids , 2018, 2018 Annual American Control Conference (ACC).

[17]  Alessandro Pisano,et al.  On the Robust Distributed Secondary Control of Islanded Inverter-Based Microgrids , 2020 .

[18]  Florian Dörfler,et al.  Voltage stabilization in microgrids via quadratic droop control , 2013, 52nd IEEE Conference on Decision and Control.

[19]  T.C. Green,et al.  Modeling, Analysis and Testing of Autonomous Operation of an Inverter-Based Microgrid , 2007, IEEE Transactions on Power Electronics.

[20]  Bidyadhar Subudhi,et al.  Robust Finite-Time Secondary Control Scheme for Islanded Microgrid with Nonlinear Dynamics and Uncertain Disturbances , 2019, 2019 IEEE 5th International Conference for Convergence in Technology (I2CT).

[21]  Ziyang Meng,et al.  Decentralized finite-time sliding mode estimators and their applications in decentralized finite-time formation tracking , 2010, Syst. Control. Lett..

[22]  Fanghong Guo,et al.  Distributed Secondary Voltage and Frequency Restoration Control of Droop-Controlled Inverter-Based Microgrids , 2015, IEEE Transactions on Industrial Electronics.