Limits to Impedance Relaying
- 1 January 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-98 (1), 246-260
- https://doi.org/10.1109/tpas.1979.319525
Abstract
The paper reviews the role of impedance relaying in modern transmission line protection systems. The speed and reach of the first zone of an impedance relay are identified as being the most important attributes of a relay. The paper develops a mathematical model of the relaying process in the presence of transient phenomena which accompany faults. It is shown that there is an uncertainty associated with the impedance estimated by a relay and this uncertainty depends upon the speed with which these estimates are made. A quantitative relationship between the relay speed and its reach is obtained.Keywords
This publication has 9 references indexed in Scilit:
- The Laboratory Investigation of a Digital System for the Protection of Transmission LinesIEEE Transactions on Power Apparatus and Systems, 1979
- Fundamental basis for distance relaying with symmetrical componentsIEEE Transactions on Power Apparatus and Systems, 1977
- Effects of Future Turbine-Generator Characteristics on Transient StabilityIEEE Transactions on Power Apparatus and Systems, 1971
- Effects of Trends in Large Steam Turbine Driven Generator Parameters on Power System StabilityIEEE Transactions on Power Apparatus and Systems, 1971
- Conemaugh Project New Concepts for 500-kV System ProtectionIEEE Transactions on Power Apparatus and Systems, 1971
- Digital Calculation of Impedance for Transmission Line ProtectionIEEE Transactions on Power Apparatus and Systems, 1971
- Relaying the AEP 765-kV SystemIEEE Transactions on Power Apparatus and Systems, 1969
- The Application of Relaying on an EHV SystemIEEE Transactions on Power Apparatus and Systems, 1967
- Protective Relaying Practice for EHV Systems in Western EuropeTransactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1962