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| Content Provider | IET Digital Library |
|---|---|
| Author | Radhakrishnan, Nikitha Schneider, Kevin P. Tuffner, Francis K. Du, Wei Bhattarai, Bishnu P. |
| Abstract | Networked and interconnected microgrids can improve resilience of critical end-use loads during extreme events. However, the frequency deviations in microgrids during transient events are significantly larger than those typically seen in bulk transmission systems. The larger frequency deviations can cause a loss of inverter-connected assets, resulting in a loss of power to critical end-use loads. Grid Friendly ApplianceTM (GFA) controllers can mitigate the transient event effects by engaging end-use loads. This paper presents a method to select set-points for end-use loads equipped with GFA controllers, while minimizing the interruptions to end-use customers. An online (i.e. real-time), device-level algorithm adjusts individual GFA controller frequency setpoints based on the operational characteristics of each end-use load and on the changing grid dynamic characteristics to selectively engage the load for mitigating the switching transients. The adaptive gradient-descent-based algorithm does not require control or coordination amongst end-use devices for adapting frequency set-points. The method is validated using dynamic simulations on a modified version of the IEEE 123-node test system with three microgrids using the GridLAB-DTM simulation environment. The improved dynamic stability achieved through the engagement of GFAs support the switching operations necessary for networked microgrid operations. |
| Starting Page | 697 |
| Ending Page | 704 |
| Page Count | 8 |
| Volume Number | 3 |
| e-ISSN | 25152947 |
| Issue Number | Issue 5, Oct (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-stg/3/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-stg.2019.0265 |
| Journal | IET Smart Grid |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2020-05-21 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Adaptive Gradient Descent-based Algorithm Bulk Transmission System Changing Grid Dynamic Characteristic Control of Electric Power System Critical End-use Device-level Algorithm Distributed Power Generation Domestic Appliances Effective Option End-use Customers End-use Device Frequency Set-Point GFA Controller Grid Friendly Appliance IEEE 123-node Test System Improved Dynamic Stability Individual GFA Controller Frequency SetPoint Inverter-connected Assets Invertors Isolated Microgrid Larger Frequency Deviations Load Control Load Regulation Microgrid Operators Operational Characteristic Operational Experience Optimisation Technique Power Generation Control Power Grid Power System Control Resilient Networked Microgrid Operation Switching Operation Switching Transients TM Controller Transient Events |
| Content Type | Text |
| Resource Type | Article |
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