Distance relaying systems
US4212046A · kind A · utility
5Cited by
5References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 9, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | May 9, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a digital distance relaying system the principle of comparing the amplitude values of alternating current quantities is used. In one example, amplitude values of V and V-IZ are compared and in the other example the amplitude values of V-IZ and IZ are compared for determining the operating point of the relay system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.