Издательство Springer, 2015, -599 pp.Distributed generation (DG) of electricity based on renewable energy sources such as wind and solar is gaining more and more attention all over the world because of ever growing concerns on energy cost, energy security, and environmental issues. Although DG has a great potential for economic and environmental benefits, how to establish efficient and reliable control over a large number of DG units is one of the fundamental problems to be solved in the near future. One promising solution to this problem is the microgrid, which interconnects a group of DG units and loads at a distribution voltage level in a local area such as a university or a residential community. Microgrids are small-scale power systems that facilitate the integration of distributed generators and can operate in both grid-connected and islanded modes. In normal operation, the microgrid is connected to the main grid, and its frequency is dictated by the nominal frequency of the main grid. However, the microgrid may disconnect from the main grid and go to the islanded operation due to preplanned or unplanned events. Islanding process results in active power unbalance between generation and consumption units which, in turn, may cause frequency instability.
Microgrids are established based on localized control and can operate in either a grid-connected mode or an islanded mode, which significantly reduces the complexity of DG unit control. In order to avoid high capital expenditure and low reliability in microgrid operation, decentralized control is indispensable.
This book is essentially written for senior and first-year graduate students interested in studying distributed energy systems and future power systems. The different chapters and sections are organized to treat three broad avenues, namely architectures and integration, modeling and analysis, and communication and control. The main perspective of these sections is to capture the main sources for expanding the present electric power grid. Our goal is to capture the spectrum of this exponential transformation, and at the same time present the plethora of open problems that this transformation poses for our control theory colleagues.Part I Modeling and Analysis
Introduction
Distributed Generation Plants
Part II Architectures and Integration
Control Methods for Microgrids
Optimal Energy Management
A System of Systems Framework for Microgrids
Part III Communication and Control
Networked Control of Microgrid System of Systems
Decentralized Voltage Control Methods
Advanced Control Approaches
Real-Time Implementation
