Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids
The central components influencing future grid stability in the future are inverters and their controllers. This paper delves into the pivotal role of inverters and their controllers in shaping the future stability of grids. Focusing on grid-supporting inverters, the study utilizes a microgrid test...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/24/8054 |
| _version_ | 1797381262584840192 |
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| author | Carina Lehmal Ziqian Zhang Herwig Renner Robert Schürhuber |
| author_facet | Carina Lehmal Ziqian Zhang Herwig Renner Robert Schürhuber |
| author_sort | Carina Lehmal |
| collection | DOAJ |
| description | The central components influencing future grid stability in the future are inverters and their controllers. This paper delves into the pivotal role of inverters and their controllers in shaping the future stability of grids. Focusing on grid-supporting inverters, the study utilizes a microgrid test setup to explore their impact on overall grid stability. Employing impedance-based stability analysis with the Nyquist criterion, the paper introduces variations in internal inverter parameters and external grid parameters using pole-zero map considerations. The inverter’s control structure, resembling standard generators with droop control, facilitates the application of grid operators’ knowledge to inverter control. Mathematical insights into stability principles are provided, highlighting the influence of poles related to the phase-locked loop and the strategic placement of additional poles for enhanced stability. Furthermore, the paper evaluates the effects of rotating inertia, revealing that a 50% increase in system inertia can stabilize unstable microgrid behavior, enabling grid-supporting inverters to actively contribute to grid reliability. |
| first_indexed | 2024-03-08T20:48:52Z |
| format | Article |
| id | doaj.art-838e24cf3c974b898dd1c6c0250859c8 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T20:48:52Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-838e24cf3c974b898dd1c6c0250859c82023-12-22T14:05:57ZengMDPI AGEnergies1996-10732023-12-011624805410.3390/en16248054Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from MicrogridsCarina Lehmal0Ziqian Zhang1Herwig Renner2Robert Schürhuber3Institute of Electrical Power Systems, Graz University of Technology, 8010 Graz, AustriaInstitute of Electrical Power Systems, Graz University of Technology, 8010 Graz, AustriaInstitute of Electrical Power Systems, Graz University of Technology, 8010 Graz, AustriaInstitute of Electrical Power Systems, Graz University of Technology, 8010 Graz, AustriaThe central components influencing future grid stability in the future are inverters and their controllers. This paper delves into the pivotal role of inverters and their controllers in shaping the future stability of grids. Focusing on grid-supporting inverters, the study utilizes a microgrid test setup to explore their impact on overall grid stability. Employing impedance-based stability analysis with the Nyquist criterion, the paper introduces variations in internal inverter parameters and external grid parameters using pole-zero map considerations. The inverter’s control structure, resembling standard generators with droop control, facilitates the application of grid operators’ knowledge to inverter control. Mathematical insights into stability principles are provided, highlighting the influence of poles related to the phase-locked loop and the strategic placement of additional poles for enhanced stability. Furthermore, the paper evaluates the effects of rotating inertia, revealing that a 50% increase in system inertia can stabilize unstable microgrid behavior, enabling grid-supporting inverters to actively contribute to grid reliability.https://www.mdpi.com/1996-1073/16/24/8054grid-supporting inverterstabilitysmall-signal analysismicro gridanalytical modeling |
| spellingShingle | Carina Lehmal Ziqian Zhang Herwig Renner Robert Schürhuber Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids Energies grid-supporting inverter stability small-signal analysis micro grid analytical modeling |
| title | Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids |
| title_full | Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids |
| title_fullStr | Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids |
| title_full_unstemmed | Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids |
| title_short | Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids |
| title_sort | enhancing stability of grid supporting inverters from an analytical point of view with lessons from microgrids |
| topic | grid-supporting inverter stability small-signal analysis micro grid analytical modeling |
| url | https://www.mdpi.com/1996-1073/16/24/8054 |
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