Method and device for locating equipment-level oscillation sources of DFIG grid-connected system
US11340274B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 24, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P9/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The application relates to a method and device for locating equipment-level oscillation sources of DFIG grid-connected system, which belongs to the technical field of wind generation, and solves the problem of stable operation of the wind power grid-connected system at the current stage. The method comprises: constructing the energy correlation topology network of the components in DFIG; analyzing the dynamic energy flows between the components during the oscillation process; calculating magnitudes of the causality between the dynamic energy flows; building a causality diagram of oscillation transmission in the DFIG; analyzing the distribution of the magnitude of the causality in the diagram, determining the oscillation transmission routes and locating the oscillation sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.