Method for locating phase to ground faults in DC distribution systems
US8067942B2 · kind B2 · utility
8Cited by
2References
17Claims
0Family size
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Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Sep 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for locating phase to ground faults in DC distribution systems. The method includes utilizing wavelet analysis using Multi-Resolution Analysis (MRA) as a signal processing tool for recognition of characteristic features in the voltage signal. The voltage signal contains characteristic information in the high frequency range above the switching frequencies of the PE converters which allows for localization of the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.