期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 52, 期 6, 页码 5165-5174出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2016.2597281
关键词
Damping; distributed generation; frequency transient; inertia; microgrid; transient stability
资金
- National Centre for Photovoltaic Research and Education (NCPRE), Indian Institute of Technology (IIT) Bombay - Ministry of New and Renewable Energy (MNRE), India
- Industrial Research and Consultancy Centre (IRCC) (Seed Grant), IIT Bombay
Dynamic frequency regulation and effect of penetration of static and inertial sources on system stability are important issues for islanded microgrid power quality and reliability. This paper presents a novel strategy of utilizing an inverter-based source as a voltage source inverter or virtual synchronous generator (VSG). Electromechanical and power modes are critical for small signal stability of an isolated microgrid having static and inertial sources. Interaction of these modes is analyzed through eigenvalue analysis of microgrid model and differential equations describing respective modes. Inertia is important for providing fault current, determining steady state and transient stability, and better system frequency profile. A novel technique is proposed to include inertia virtually to the inverter-based sources by adding swing equation. Furthermore, inverter-based sources with traditional and modified droop controls and VSGs are compared with respect to inertia, energy, and stability. The proposed control and stability comparison are verified through experimental microgrid setup having three inverter-based sources, which can be alternately operated as VSGs.
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