Digital protective relaying systems
US4371908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1982 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Feb 3, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/261
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a digital protective relaying device for protecting electric power transmission line including an electric station at each end thereof, and each electric station including at least one circuit breaker to be tripped by a protective relay for protecting the own station, a digital protective relay provided with a computer is further provided at each end so as to receive electrical data in digital form from the electric stations for operating in an ordinary protective operation. As a control condition occurs in one station, the condition is sent to a digital protective relay provided at the other end of the transmission line, thereby changing the operational steps of the computer included in the protective relay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.