Method for avoiding blackouts caused by an RoCoF-based relay tripping in a power system
US11876381B1 · kind B1 · utility
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Key dates
| Filing date | Jul 5, 2023 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Jul 5, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure provides a method to limit the post-disturbance node maximum RoCoF by optimizing UC decisions. The node initial RoCoF expressions under common disturbance types, including the load, the line switching, and the generator turbine disturbances, are derived. Then, the piecewise linear relationship between the node initial RoCoF and UC decision variables are obtained. To avoid numerical simulation of the node maximum RoCoF, two analytical constraints, i.e., the node initial RoCoF constraint and the COI maximum RoCoF constraint, are formulated in the UC model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.