Method and apparatus for defect pre-warning of power device
US10613153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2013 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for defect pre-warning of a power device may comprise processing measurement data regarding components of the power device based on predetermined severity criteria, to obtain severities of monitoring indexes related to defects of the components. Weights of the monitoring indexes with respect to the defects are determined based on effectiveness of the monitoring indexes for the defects. A defect probability that at least one of the components has each of at least one of the defects is estimated based on the severities and the weights. Some embodiments may achieve more reliable defect probability estimation and in some embodiments defective component probability and/or device healthy may be estimated. Based on the reliable information, it may facilitate to arrange the maintenance before defects involve into a fault and assess a risk of power device operation and control, thereby improving reliability of the power device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.