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| Content Provider | IET Digital Library |
|---|---|
| Author | Shuvra, Mahfuz A. Chowdhury, Badrul |
| Abstract | A dynamic voltage support strategy using smart photovoltaic (PV) inverters during unbalanced grid faults events is proposed. It uses Karush–Kuhn–Tucker condition for finding optimal solutions to calculate the inverter's active and reactive current references. The proposed methodology also takes the X/R ratio into consideration which allows the inverter to differentiate weak or strong grid conditions and adjust its reference currents. Existing multiple-complex coefficient-filter based phase locked loop is used to extract the positive and negative sequence components. The proposed strategy deploys existing dual vector current control to ensure optimal current injection and low voltage ride through. A distributed ride-through coordination approach among multiple inverters is also proposed based on different optimisation goals – either fundamental positive or fundamental negative sequence voltage support. The strategy is simulated, and inverter's transient performance is experimentally verified on a modified IEEE-13 bus test feeder using controller hardware-in-the-loop approach. Results show substantial evidence that the proposed method can be successfully applied to support the grid during an unbalanced fault event. |
| Starting Page | 598 |
| Ending Page | 608 |
| Page Count | 11 |
| ISSN | 17521416 |
| Volume Number | 13 |
| e-ISSN | 17521424 |
| Issue Number | Issue 4, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/13/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5761 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2019-01-04 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control of Electric Power System Controller Hardware-in-the-loop Approach Different Optimisation Goals Differentiate Weak Grid Condition Distributed Dynamic Grid Support Distributed Power Generation Distributed Ride-through Coordination Approach Distribution Network Dual Vector Current Control Dynamic Voltage Support Strategy Electric Current Control Fundamental Negative Sequence Voltage Support Fundamental Positive Sequence Voltage Support Inverter Invertors Karush-Kuhn-Tucker Condition Low Voltage Ride Modified IEEE-13 Bus Test Feeder Multiple Inverter Multiple-complex Coefficient-filter Based Phase Locked Loop Negative Sequence Component Optimal Current Injection Optimal Solutions Phase Locked Loop Photovoltaic Power System Positive Sequence Component Power Generation Fault Power Grid Power System Control Reference Current Smart Photovoltaic Inverter Smart PV Inverter Strong Grid Condition Unbalanced Fault Event Unbalanced Grid Fault Events Voltage Control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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