A consensus-based distributed voltage control for reactive power sharing in microgrids

We propose a consensus-based distributed voltage control (DVC), which solves the problem of reactive power sharing in autonomous meshed inverter-based microgrids with inductive power lines. Opposed to other control strategies available thus far, the DVC does guarantee reactive power sharing in steady-state while only requiring distributed communication among inverters, i.e. no central computing nor communication unit is needed. Moreover, we provide a necessary and sufficient condition for local exponential stability. In addition, the performance of the proposed control is compared to the usual voltage droop control [1] in a simulation example based on the CIGRE benchmark medium voltage distribution network.

[1]  Francesco Bullo,et al.  Synchronization and power sharing for droop-controlled inverters in islanded microgrids , 2012, Autom..

[2]  Babu Narayanan,et al.  POWER SYSTEM STABILITY AND CONTROL , 2015 .

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

[4]  P. Olver.  Nonlinear Systems , 2013 .

[5]  Gordon F. Royle,et al.  Algebraic Graph Theory , 2001, Graduate texts in mathematics.

[6]  P.W. Lehn,et al.  Autonomous load sharing of voltage source converters , 2005, IEEE Transactions on Power Delivery.

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

[8]  H. Farhangi,et al.  The path of the smart grid , 2010, IEEE Power and Energy Magazine.

[9]  Josep M. Guerrero,et al.  Advanced Control Architectures for Intelligent Microgrids—Part I: Decentralized and Hierarchical Control , 2013, IEEE Transactions on Industrial Electronics.

[10]  Yun Wei Li,et al.  An Accurate Power Control Strategy for Power-Electronics-Interfaced Distributed Generation Units Operating in a Low-Voltage Multibus Microgrid , 2009, IEEE Transactions on Power Electronics.

[11]  N. Hatziargyriou,et al.  Microgrids: an overview of ongoing research, development, anddemonstration projects , 2007 .

[12]  Qing-Chang Zhong,et al.  Robust Droop Controller for Accurate Proportional Load Sharing Among Inverters Operated in Parallel , 2013, IEEE Transactions on Industrial Electronics.

[13]  敏史 伊瀬,et al.  国際会議報告 IEEE-Power Engineering Society Winter Meeting , 2000 .

[14]  Charles R. Johnson,et al.  Matrix analysis , 1985, Statistical Inference for Engineers and Data Scientists.

[15]  Reza Olfati-Saber,et al.  Consensus and Cooperation in Networked Multi-Agent Systems , 2007, Proceedings of the IEEE.

[16]  Johannes Schiffer,et al.  On power sharing and stability in autonomous inverter-based microgrids , 2012, 2012 IEEE 51st IEEE Conference on Decision and Control (CDC).

[17]  Josep M. Guerrero,et al.  Secondary control for reactive power sharing in droop-controlled islanded microgrids , 2012, 2012 IEEE International Symposium on Industrial Electronics.

[18]  Timothy C. Green,et al.  Control of inverter-based micro-grids , 2007 .

[19]  Alessandro Astolfi,et al.  Conditions for stability of droop-controlled inverter-based microgrids , 2014, Autom..

[20]  I. W. Sandberg,et al.  Some network-theoretic properties of nonlinear DC transistor networks , 1969 .

[21]  R. Adapa,et al.  Control of parallel connected inverters in stand-alone AC supply systems , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[22]  Bill Rose,et al.  Microgrids , 2018, Smart Grids.

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

[24]  K. Strunz,et al.  Design of benchmark of medium voltage distribution network for investigation of DG integration , 2006, 2006 IEEE Power Engineering Society General Meeting.

[25]  A. Keyhani,et al.  Control of distributed generation systems - Part II: Load sharing control , 2004, IEEE Transactions on Power Electronics.

[26]  Johannes Schiffer,et al.  Synchronization of droop-controlled microgrids with distributed rotational and electronic generation , 2013, 52nd IEEE Conference on Decision and Control.

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

[28]  E.F. El-Saadany,et al.  Adaptive Decentralized Droop Controller to Preserve Power Sharing Stability of Paralleled Inverters in Distributed Generation Microgrids , 2008, IEEE Transactions on Power Electronics.