Multifunction protective relay system
US5224011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Apr 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective relay system for generation apparatus connectable to a three-phase alternating current electrical utility system. The relay system includes a dual processing architecture wherein a digital signal processor executes all the signal-processing algorithms, and a separate microprocessor is used for input/output data processing. A dual-ported RAM is used to effect a fast communication link between the digital signal processor and the microprocessor to accomplish high-speed protective relaying functions to selectively trip and close a circuit breaker at a generator or cogenerator site, or that which connects it to an electric utility system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.