Method and apparatus for monitoring transformers
US4654806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1984 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Mar 30, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microprocessor-based transformer monitoring system to provide continuous on-line monitoring and analysis of transformer operation. The transformer monitoring system periodically monitors various parameters related to transformer load and condition. Maximum, minimum, and instantaneous values of the parameters are stored and analzyed. To perform the analysis, a hierarchy of thresholds is associated with each parameter. When a parameter exceeds any one of the thresholds, a response is produced by the transformer monitoring system. The type of response depends on the level of the exceeded threshold in the hierarchy. The range of response produced by the transformer monitoring system includes: continuing normal periodic data collection and analysis, increasing the rate of data collection and analysis, recommending an on-site physical check of the monitored transformer, reducing transformer load, and taking the transformer off line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.