Annular bearer network and service bearing implementation method therefor
US11190010B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2019 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a method and apparatus for calculating fault resistance and a current-limiting current of a superconducting fault current limiter. The method includes: calculating a first short-circuit fault current In(t) of a power grid short-circuit fault transient circuit; calling an external characteristic model U(I,t), and calculating resistance Rn(t) of a superconducting fault current limiter under the first short-circuit fault current In(t); adding the resistance Rn(t) of the superconducting fault current limiter into the power grid short-circuit fault transient circuit, and calculating a second short-circuit fault current Im(t), where m=n+1; and determining whether an error between the second short-circuit fault current Im(t) and the first short-circuit fault current In(t) is smaller than a preset threshold value, if yes, determining the fault resistance and the current-limiting current of the superconducting fault current limiter to be Rn(t) and Im(t) respectively; otherwise, In(t)=Im(t), returning for iteration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.