Impedance Modelling and Analysis of Grid-Connected Systems
A special issue of Energies (ISSN 1996-1073).
Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 531
Special Issue Editor
Special Issue Information
Dear Colleagues,
Atmospheric climate changes and limited reserves of fossil fuels have strongly accelerated the use of grid-connected resources such as solar and wind. Due to the large-scale and increasing use of such distributed resources, the power grid has exhibited continuous dynamic changes, producing harmonic resonance between inverters and the grid. Harmonic resonance is an indication of a lack of system stability margin and may lead to instability and disruption of inverter operation.
Impedance-based stability analysis has become a popular method for characterizing grid-connected systems. The method states that under certain conditions, the system operation remains stable if the ratio of grid impedance to inverter output impedance satisfies the Nyquist criterion. The method can be applied in various grid-connected-system applications including real-time stability analysis and adaptive control of grid-connected inverters.
This Special Issue aims to gather novel methods and application possibilities of the impedance-based stability criterion. Efficient measurement techniques are needed for the inverter output impedance and grid impedance, especially when high-power devices are used. Feasible adaptive control solutions for grid-connected inverters/converters are also required.
Prospective authors are invited to submit original contributions, survey papers, or tutorials for publication in this Special Issue. Topics of interest include, but are not limited to:
- Grid interfacing of renewable energy converters
- Impedance measurements of grid-connected systems
- Interaction issues between the renewable energy converters and power grid
- Adaptive controllers using impedance measurements
- Implementation of impedance measurements
- Impedance modelling and analysis of smart grid applications
Guest Editor
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Keywords
- Grid interfacing of renewable energy converters
- Impedance measurements of grid-connected systems
- Interaction issues between the renewable energy converters and power grid
- Adaptive controllers using impedance measurements
- Implementation of impedance measurements
- Impedance modelling and analysis of smart grid applications
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