Method and apparatus applying virtual Δt trip criterion in power distribution
US7508642B2 · kind B2 · utility
5Cited by
9References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2006 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/228
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A virtual ΔT trip criterion is implemented in an electrical power distribution system to provide current-based tripping for a solid state power switching device. A first-order system model is implemented either by hardware or software to represent a rise in temperature of the electrical wire through which power is supplied. When the simulated temperature exceeds a threshold, the solid state power switching device may be tripped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.