Название: Stability Analysis, Flexible Control and Optimal Operation of Microgrid
Автор: Yong Li, Mingmin Zhang, Yijia Cao
Издательство: Springer
Год: 2023
Страниц: 226
Язык: английский
Формат: pdf (true)
Размер: 12.3 MB

This book intends to report the new results of the microgrid in stability analysis, flexible control and optimal operation. The oscillatory stability issue of DC microgrid is explored and further solved. Flexible and stable voltage & frequency control of microgrid is put forward considering the distributed generations or distributed energy storages. The optimal operation of multi-energy is researched in view of economic efficiency and low-carbon development. The results of this book are original from authors who carry out the related research together for a long time, which is a comprehensive summary for authors’ latest research results. The book is likely to be of interest to university researchers, electrical engineers and graduate students in power systems, power electronics, renewable energy and microgrid.

As the traditional fossil fuel-driven power systems are vulnerable to the climate-induced extreme events such as earthquakes, typhoons and so on, it is still of great necessity to ensure electricity resiliency and reliability. The attention toward microgrid (MG) is increasing both in academia and industry, thanks to their benefits of significant flexibility, reliability and low-carbon footprint. MG is conceptually considered as a small-scaled power grid formed by various distributed energy sources, energy storage devices and controllable loads and is generally featured with high-proportional power electronic characteristics. It is widely believed that MG is a most promising new grid paradigm for effective and high-proportional integration of distributed renewable energy resources, which can thus promote the energy utilization efficiency and reduce CO2 emission.

The springing up of power electronic converters in MG offers significant flexibility and controllability in power generation, conversion and comsumption, but the large-scaled replacement of spinning power generators will also bring big challenges for the normal operation of MG. It is recognized that the coupling effects among multi-time scale control loops in the controllers of converters are the main inducement to the low-frequency and high-frequency oscillatory instability. Besides, as the penetration rate of power electronic-based converters grows up, the spinning generation reserves have become comparatively deficient, which results in a low-inertia characteristic of MG. Frequency and voltage stability and even system reliability may face huge threats for MG featured with insufficient inertia, and hence, special control mechanisms are required to improve the stability of frequency and voltage. In the occasion of MG with different types of distributed energy sources, the proper coordination and optimal scheduling among different types of energy sources and loads are of great importance for economic operation, and also a significant amount of research related to the scheduling optimization of multi-energy MGs has been conducted.

Focusing on topics of stability analysis, flexible control and optimal operation in the field of MG, this book intends to present some basic discussions and related new research results. The oscillatory instability issue of DC MG is investigated, and the corresponding solution is then provided. To deal with low-inertia characteristic of MG, some flexible and effective voltage and frequency regulation methods for MG are put forward taking advantage of distributed generators or distributed energy storages, respectively, or by means of coordination control for distributed generators and energy storages. At last, the optimal operation of multi-energy MG is researched in view of economic efficiency and low-carbon development.

The main research results of this book are original from authors who carried out the related research together for almost six years, which is a comprehensive summary for authors’ latest research ideas and achievements. This book is likely to be of interest to university researchers and graduate students in electrical engineering and potentially contributes to inspiring electrical engineers with advanced theory, method and technique in analysis, control and optimal operation of MG.

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