Diagnosis method and diagnosis apparatus of photovoltaic power system
US6892165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Aug 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/29
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reference output characteristic of a photovoltaic power system at the time of normal operation is obtained in accordance with an installation condition (topography of installation site, meteorological condition, configuration of the system itself, or the like) of the photovoltaic power system, an output characteristic in the photovoltaic power system during operation is actually measured, the obtained reference output characteristic and the measured output characteristic are compared and, based on the comparison result, the normality/abnormality of the output is diagnosed and, at the same time, the cause is diagnosed in the case of abnormality. The reference output characteristic at the time of normal operation can also be obtained based on the measured value of the past output characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.