Abstract
Similar to emerging regional grid codes, the recently approved IEEE 2800 Standard mandates that inverter-based resources (IBRs) generate negative-sequence current during low-voltage ride-through (LVRT) conditions. The 2800 Standard requires that the IBRs' negative-sequence current lead the negative-sequence voltage by 90$^\circ$-100$^\circ$ to emulate synchronous generators and reduce the likelihood of protection malfunction. However, the limitations of existing doubly-fed induction generators (DFIGs) led the Standard to exempt the DFIGs from this requirement and allow a wider range for their negative-sequence current angle. Meanwhile, the 2800 Standard also acknowledged that this exemption had unidentified and potentially negative impacts on protective relays. This paper (i) sheds light on several so-far-unknown DFIG characteristics that impact the angle of the negative-sequence current during LVRT, (ii) reveals the impacts of the above DFIG exemption on relays, and (iii) develops a solution to prevent the need for this exemption in the future revisions of the IEEE 2800 Standard.
Original language | British English |
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Pages (from-to) | 587-601 |
Number of pages | 15 |
Journal | IEEE Transactions on Sustainable Energy |
Volume | 14 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 2023 |
Keywords
- Doubly-fed induction generator
- grid code
- IEEE 2800 Standard
- low-voltage ride-through