Online estimation of area-level inertia considering inter-area equivalent frequency dynamics
US11906556B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2023 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jun 8, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Online estimation of area-level inertia can be used for frequency stability control in low-inertia power systems. This disclosure provides an area-level inertia online estimation method considering inter-area equivalent frequency dynamics. The disclosed method only needs one phasor measurement unit placed at any bus within each area. The inter-area equivalent frequency dynamics model for the multi-area power system is developed, which is employed to estimate area-level inertia under the small disturbance situation. Then, the area-level inertia estimation model boils down to a nonlinear parameter identification problem. The other boundary conditions of the disclosed method are derived by parameter identifiability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.